Language：English   Publishing type：Research paper (international conference proceedings)  

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineers of Japan  

Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Authorship：Lead author,　Last author,　Corresponding author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

DOI： 10.1109/ojpel.2023.3303255

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce50734.2022.9947599

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce50734.2022.9947532

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineers of Japan (IEE Japan)  

DOI： 10.1541/ieejjournal.142.499

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/isie51582.2022.9831649

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.23919/ipec-himeji2022-ecce53331.2022.9807032

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.23919/ipec-himeji2022-ecce53331.2022.9807159

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.23919/ipec-himeji2022-ecce53331.2022.9807190

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

DOI： 10.1109/tie.2021.3084169

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/apec43599.2022.9773488

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

DOI： 10.1109/tpel.2021.3109672

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

DOI： 10.1109/tia.2021.3124864

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ifeec53238.2021.9661896

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ifeec53238.2021.9661993

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ifeec53238.2021.9661695

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce47101.2021.9595522

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical and Electronics Engineers (IEEE)  

DOI： 10.1109/tia.2021.3093254

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/isie45552.2021.9576351

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/apec42165.2021.9487199

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/apec42165.2021.9487055

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.23919/icems50442.2020.9291072

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.microrel.2020.113775

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.microrel.2020.113840

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.microrel.2020.113796

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

This paper presents an efficiency improvement of an 1 MHz operated grid-tied inverter using GaN-HEMT devices based on a discontinuous current mode (DCM). The parasitic capacitance of the devices and printed circuit board (PCB) forms a resonant circuit with the filter inductor during the zero current period of the DCM. An off-time discrete control has been proposed to achieve an uniform turn-on and zero voltage switching (ZVS) by discretely adjusting the oscillation period. This paper investigates the efficiency improvement by the ZVS. Two PCBs with different layouts were considered and fabricated to analyze the effect of the parasitic capacitance. The effectiveness of the off-time discrete control was verified by experiments with two fabricated prototypes.

DOI： 10.1109/ECCE44975.2020.9235787

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce44975.2020.9235772

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce44975.2020.9235693

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce44975.2020.9235762

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce44975.2020.9235426

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.23919/epe20ecceeurope43536.2020.9215869

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/apec39645.2020.9124356

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

This paper proposes and evaluates an active gate control method of switching waveform design with digital gate drivers for a practical full-bridge inverter equipped with additional dc-link capacitors. The full-bridge inverter employs 1700V, 150-A IGBT power modules and has a practical circuit layout with additional capacitors. The experimental system has a capability of optimizing driving patterns for shaping the designed switching waveform. In experimental verification, active gate control can suppress the surge voltage from 70% to 10% with 30% lower switching loss in three different circuit layout of the proposed practical 50-kVA full-bridge inverter. As a result, this paper reveals that active gate control achieves reduction in effect of stray inductance and increases a freedom of the circuit layout in power converters.

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

A digital gate driver is effective to solve the tradeoff between the switching loss and the current/voltage overshoot of power transistors. A load current and temperature dependent optimization of the gate driving vectors for the digital gate drivers, however, is required [13], because an optimum vector at a particular load current and temperature does not often work at different conditions. When sensors for the load current and/or temperature are not available, the digital gate drivers are not useful under load current and temperature variations. To solve the problem, robust gate driving vectors to load current and temperature variations for the digital gate drivers are proposed. To compare a conventional single-step gate drive and the proposed robust gate driving vectors, the switching loss and the current/voltage overshoot in turn-on/off state of IGBT are measured by using a 6-bit programmable digital gate driver IC across nine conditions including different load currents (20 A, 50 A, and 80 A) and temperatures (25 degrees C, 75 degrees C, and 125 degrees C). The performance of the switching loss and the current/voltage overshoot of the proposed robust vectors is improved by 2% to 11 % and 16 % to 29 % across the nine conditions in turn-on/off state, respectively, which indicates that the proposed robust vectors requiring no current and temperature sensors are a useful method for the digital gate drivers.

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/iecon.2019.8927352

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/iecon.2019.8927500

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.microrel.2019.113428

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

A load current and temperature dependent optimization of the active gate driving waveforms is proposed to always solve the trade-off between the switching loss and the current/voltage overshoot of power transistors under load current and temperature variations. The switching loss and the current/voltage overshoot in turn-on/off state of IGBT using optimized gate driving vectors obtained by an automatic optimization are measured by using a 6-bit programmable digital gate driver IC across nine conditions including different load currents (20 A, 50 A, and 80 A) and temperatures (25 degrees C, 75 degrees C, and 125 degrees C). They are compared with those with conventional single-step gate driving waveforms using an object function as a function of the normalized loss and overshoot. When the optimized gate driving vector at a typical operation point of (50 A, 25 degrees C) is reused in other eight conditions, the object functions at eight conditions are better or worse than those of the conventional single-step driving. In contrast, when the gate driving vector is optimized at each condition, the object functions at all eight conditions are better than those of the conventional single-step driving in both turn-on and turn-off states, which clarifies the necessity of the proposed optimization. To implement the proposed optimization, a lookup table based active gate controller, which provides a preset optimum driving vector depending on the load current and the temperature, will be effective.

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

Active gate driving techniques using fully digital circuits and ICs have been actively investigated in the past half-decade. It has been reported that they contribute to improve loss and overshoot voltage and current, simultaneously during switching transients. However, a major concern of the digital active gate driver is an increase in the number of input signals for a practical implementation. This paper presents a verification of a digital gate driver IC with variable 63-level drivability controlled by serial four-bit input signals to decrease the implementation size and cost. Experimental results in a half-bridge converter using Si-IGBT module prove that the proposed gate driver IC realizes the active gate control effectively as the same with the conventional IC with parallel inputs despite the reduced number of the input signals. It is demonstrated that the developed digital gate driver circuit contributes to reduce the number of the input signals and digital isolators by one-thirds, and footprint of the PCB by 20% compared with the conventional gate driver IC with parallel 12-bit signal inputs.

Language：English   Publishing type：Research paper (international conference proceedings)  

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

DOI： 10.1109/TIA.2019.2927462

Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

DOI： 10.1109/TIA.2019.2912800

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.microrel.2018.06.035

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)  

Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

DOI： 10.1109/TIA.2018.2849751

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)  

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/apec.2018.8341544

Language：English   Publishing type：Research paper (scientific journal)   Publisher：WILEY  

This paper proposes a new control method suitable for active power filters, which can reduce the dc capacitor voltage ripple associated with the third-order harmonic current compensation. The proposed method superimposes a negative-sequence fundamental current on the compensating current to cancel out the active power ripple caused by the third-order harmonic current. As a result, the proposed method has the capability to eliminate the dc capacitor voltage ripple oscillating at double the source frequency. Experimental results obtained by a 10-kW three-phase diode rectifier load verify the validity of the proposed method. The proposed method exhibits a small dc capacitor voltage ripple reduced to 43% of that using the conventional method. (C) 2017 Wiley Periodicals, Inc. Electr Eng Jpn, 202(2): 54-62, 2018; Published online in Wiley Online Library (wileyonlinelibrary. com).

DOI： 10.1002/eej.23045

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineers of Japan  

This paper proposes a new control method suitable for active power filters, which can reduce the dc capacitor voltage ripple associated with the third-order harmonic current compensation. The proposed method superimposes a negative-sequence fundamental current on the compensating current to cancel out the active power ripple caused by the third-order harmonic current. As a result, the proposed method has the capability to eliminate the dc capacitor voltage ripple oscillating at double the source frequency. Experimental results obtained by a 10-kW three-phase diode rectifier load verify the validity of the proposed method. The proposed method exhibits a small dc capacitor voltage ripple reduced to 43% of that using the conventional method.

DOI： 10.1541/ieejias.137.141

Language：English   Publishing type：Research paper (scientific journal)   Publisher：WILEY-BLACKWELL  

This paper discusses the performance of compensation methods for dead-time voltage error in voltage-source grid-connection pulse-width modulation converters. The theoretical analysis in this paper reveals the relationship between the voltage error and the current ripples through the converter. The analytical results imply that the voltage error is strongly affected by the amplitude of the current ripples as well as the source power factor. This paper proposes a new compensation method which makes it possible to use two lookup tables to reduce the calculation time in the controller. The compensation characteristics are compared by using a 200-V 5-kW three-phase grid-connection converter. As a result, conventional approximation-based compensation methods exhibit an acceptable performance in a restricted power-factor operation range. In contrast, the turn-off transition-based compensation method and the proposed method have a good compensation performance all over the power factor.

DOI： 10.1002/eej.22903

Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

This paper proposes a new dc capacitor voltage control method suitable for active power filters equipped with a small dc capacitor. The proposed control method calculates the theoretical dc capacitor voltage ripple and provides it to the dc capacitor voltage feedback controller as the reference. As a result, the proposed method has the capability to regulate the mean value of the dc capacitor voltage under a large voltage ripple condition. The proposed method also allows us to use a high feedback gain for suppressing the capacitor voltage fluctuations without any performance deterioration in the harmonic compensation. Experimental results confirm a good harmonic compensation and an effective voltage regulation performance under a small dc capacitor condition. The results also demonstrate a significant improvement in the capacitor voltage regulation even when a sudden load change occurs.

DOI： 10.1109/TIA.2016.2574854

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

DOI： 10.1109/ecce.2016.7854713

Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

This paper proposes a new control method of three-phase active power filters for reducing the dc capacitor voltage fluctuations in transient load change. The proposed control method introduces a new k-step compensator, which maintains the mean active power flowing into the dc capacitor at zero every 1/(k - 1) ac line period. Therefore, the compensator can suppress the transient voltage fluctuations across the dc capacitor even when a quick load change occurs. This paper theoretically reveals the relationship between the step number k and the reduction effect of the dc voltage fluctuations. The experimental setup introducing the proposed seven-step compensator exhibits a good suppression effect of the dc voltage fluctuations and makes it possible to reduce the required capacitance value of the dc capacitor by a factor of seven.

DOI： 10.1109/TPEL.2015.2502276

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineers of Japan  

This paper discusses the performance compensation methods for dead-time voltage error in voltage-source grid of connection PWM converters. The theoretical analysis in paper reveals the relationship between the voltage error and ripples through the converter. The analytical results imply that the voltage error is strongly affected the current by the amplitude the current ripples as well as the source power factor. This paper proposes a new compensation method which makes it possible to use two lookup tables to reduce the calculation time in the controller The com- pensation are compared by using a 200-v 5-kw three-phase grid-connection converter. As a result, characteristics conventional approximation-based compensation methods exhibit an acceptable performance in a restricted power factor operation range. In contrast, the turn-off transition-based compensation method and the proposed method have a good compensation performance all over the power-factor.

DOI： 10.1541/ieejias.136.46

Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)  

Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC  

This paper discusses the voltage error caused by the dead time in voltage-source PWM converters. The theoretical analysis in this paper derives the nonlinear voltage error paying attention to the parasitic output capacitance in each switching device. The analytical result reveals that the turn-off current or the switching current ripple strongly affects the voltage error. In addition, it is clarified that the conventional compensation methods based on linear and three-level approximation are suitable under small and large current ripple conditions, respectively. A simple calculation method of current ripples in three-phase PWM converters is also developed to estimate the turn-off currents. Turn-off transition compensation method which is a new compensation method based on the analysis is developed and compared with three different conventional-methods in experiments using a 200-V, 5-kW three-phase grid-connection converter. The proposed method exhibits a good compensation performance having a lower voltage THD than the conventional methods in all over the operating range.

DOI： 10.1109/TPEL.2014.2352716

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineers of Japan  

This paper proposes a new control method for three-phase active power filters to reduce the DC capacitor voltage fluctuations caused by a quick load change. The new control method introduces a new k-step compensator, which maintains the mean active power at zero every 1/(κ-1) ac line period. Therefore, the compensator can suppress the transient voltage fluctuations across the DC capacitor, even when a quick load change occurs. This paper theoretically reveals the relationship between the step number κ and the reduction of the DC voltage fluctuations. The experimental setup introducing the proposed 7-step compensator exhibits good suppression of the DC voltage fluctuations and makes it possible to reduce the required capacitance of the DC capacitor by a factor of seven.

DOI： 10.1541/ieejias.135.718

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

This paper proposes a new control method suitable for active power filters equipped with a small dc capacitor. The proposed method can achieve not only suppressing the dc capacitor voltage fluctuation in transient states but also compensating all harmonic components in steady states. The proposed method employs a harmonic detection method based on the 7-step compensator and a repetitive controller with a comprehensive harmonic detection method. The experimental results using the active power filter with a small dc capacitor of 300-mu F have confirmed that the proposed method has the capability to compensate non-characteristic harmonics produced by a 15-kW diode rectifier in steady states without any voltage fluctuations in transient states.

DOI： 10.1109/EPE.2015.7309305

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

This paper proposes a new de capacitor voltage control method suitable for active power filters equipped with a small de capacitor. The proposed control method calculates the theoretical energy stored in the de capacitor and provides it to the de capacitor voltage feedback controller as its energy reference. As a result, the proposed method has capability to regulate the mean value of the de capacitor voltage without any degradation in harmonic compensation even when a small dc capacitor and a high feedback gain are applied. Furthermore, application of a high feedback gain to the proposed method makes it possible to suppress the capacitor voltage fluctuations effectively without any performance deterioration in the harmonic compensation. Experimental results confirm a good harmonic compensating performance when applying a high-gain feedback controller to an active power filter with a small de capacitor. The results also demonstrate a significant improvement in the capacitor voltage regulation even when a sudden load change occurs.

DOI： 10.1109/ECCE.2015.7310388

Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineers of Japan (IEE Japan)  

DOI： 10.1541/ieejias.134.412

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

This paper proposes a new control method based on a source-current detection method suitable for active power filters with a high-order switching ripple filter. The proposed active power filter detects the converter current and the source current, and compensates the source harmonic current by using repetitive control as a conventional source-current detection method. In addition, it estimates and compensates for the load harmonic current just like a conventional load-current detection method. As a result, the proposed active power filter has a transient response as fast as a conventional load-current detection one has, and it also achieves an accurate harmonic compensation. Experimental results are shown to demonstrate not only a fast transient response but also an effective harmonic compensation performance in the proposed method along with those in a conventional methods.

DOI： 10.1109/ECCE.2014.6954174

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

This paper discusses effect of the power factor on voltage error caused by the dead time in voltage-source grid-connection PWM converters. The theoretical analysis derives the voltage error considering output capacitances of the switching devices and brings out that the voltage error depends on the current ripple amplitude through the converter which is changed by the power factor. The analytical result reveals the compensation characteristics of three approximation compensation methods and turn-off transition-based compensation method from the viewpoint of the power factor. The compensation characteristics of four different compensation methods are compared with those with each other in experiments using a 200-V, 5-kW three-phase grid-connection converter. As a result, the approximation compensation methods exhibit a good compensation performances at a specific power factor. In contrast, the turn-off transition-based compensation method has a better compensation performance allover the range of power factor.

DOI： 10.1109/IPEC.2014.6869868

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

This paper proposes a new harmonic detection method for reducing voltage fluctuations applied across the dc capacitor in three-phase active power filters. The theoretical analysis in this paper derives the error in a conventional harmonic detection method and the resulting dc capacitor voltage fluctuations due to transient load changes. The proposed method inserts a new transfer function for compensating the detection error into the harmonic detection. It has been confirmed that the proposed method can suppress the dc-capacitor voltage fluctuations in experiments. As a result, the proposed method can reduce the capacitance of the dc capacitor in three-phase active power filters to 1/7.

Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

This paper discusses the voltage error caused by the dead time in voltage-source PWM converters. The theoretical analysis in this paper derives the nonlinear voltage error paying attention to the parasitic output capacitance in each switching device. The analytical result reveals that the turn-off current or the switching current ripple strongly affects the voltage error. In addition, it is clarified that the conventional compensation methods based on linear and three-level approximation are suitable under small and large current ripple conditions, respectively. A simple calculation method of current ripples in three-phase PWM converters are also developed to estimate the turn-off currents. A new compensation method based on the analysis is developed and compared with three different conventional methods in experiments using a 200-V, 5-kW three-phase gridconnection converter. The analysis-based method exhibits a good compensation performance having a lower current THD than the conventional methods in allover the operating range.

DOI： 10.1109/ECCE.2013.6646781

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Meeting report   Publisher：Institute of Electrical Engineers of Japan (IEE Japan)  

DOI： 10.1541/ieejias.142.nl12_17

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Meeting report   Publisher：Institute of Electrical Engineers of Japan (IEE Japan)  

DOI： 10.1541/ieejias.142.nl8_7

Publishing type：Meeting report   Publisher：Institute of Electrical Engineers of Japan (IEE Japan)  

DOI： 10.1541/ieejias.142.nl6_9

Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：Institute of Electrical Engineers of Japan (IEE Japan)  

DOI： 10.1541/ieejjournal.142.260

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Article, review, commentary, editorial, etc. (other)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会  

Publishing type：Research paper, summary (national, other academic conference)   Publisher：電気学会