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Yukinori Tsuruta,Atsuo Kawamura 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
This paper describes a record of the study on a high efficiency and high frequency insulation type converter based on new DAB (Dual Active Bridge) soft switching method aimed for the electric vehicle (EV). This power converter is basically proposed for the 20 kHz soft switching with closed loop control by phase shift control using DSP. For evaluating the practical effectiveness of new DAB method converter, the preceding fabrication using IGBT module and power MOSFET module has been completed and basic operational test, the efficiency measurement, light load test and closed loop control test was obtained. The load test by 4 kW of maximum load has been completed. 95.6 % efficiency at 4 kW was obtained and it corresponds to 16 kW with efficiency of 99 %.
Verification of Efficient Operation for High Power DC Chopper
Yukinori Tsuruta,Atsuo Kawamura 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper is a study on the verification of high efficient operation for high power chopper based on new soft switching method of Snubber Assisted Zero voltage and Zero current transition (SAZZ) aimed for the fuel cell electric vehicle (FCEV). Three phase interleaved 30 ㎑ 90 ㎾ power chopper using SAZZ soft switching is basically proposed and fabricated as a prototype-model using IGBTs. The load test of 15 ㎾ per one phase, adjustment test for auxiliary resonant parameter and comparison test with hard switching have been completed. 98.1 % efficiency at 15 ㎾ per one phase was measured and it corresponds to 45 ㎾ with efficiency of 98.1 %.
Yukinori Tsuruta,Atsuo Kawamura 전력전자학회 2004 ICPE(ISPE)논문집 Vol.- No.-
This paper is a record of the study on a high efficiency and high power chopper based on the new soft switching method QRAS (Quasi-resonant Regenerating Active Snubber) aimed for the fuel cell electric vehicle (FCEV). This power chopper is basically proposed for the 25kHz soft switching.<br/> For confirming the practical effectiveness of the converter, the fabrication of a prototype-model using IGBTs has been completed and the 8kW rating test, light load test, current discontinuous mode test and test out of resonance stable operation have been completed. The circuit geometry, the basic operation, the 8kW one-tenth-prototype test results are reported, and 97.5% efficiency was measured.
Yukinori Tsuruta,Atsuo Kawamura 전력전자학회 2006 JOURNAL OF POWER ELECTRONICS Vol.6 No.1
This paper is a record of the study on a high efficiency and high power chopper based on the new soft switching method QRAS (Quasi-resonant Regenerating Active Snubber) designed for a Fuel Cell Electric Vehicle (FCEV). This power chopper is basically proposed for 25kHz soft switching. To confirm the practicality and effectiveness of the converter, the fabrication of a prototype-model using IGBTs was completed. Additionally, a 8kW rating test, a light load test, a current discontinuous mode test and a stable operation resonance test was completed. The circuit geometry, the basic operation, and the 8kW one-tenth-prototype test results are reported with a 97.5% efficiency measurement.
Four quadrant SAZZ-1 Chopper for EV and HEV power train
Yukinori Tsuruta,Martin Pavlovsky,Giuseppe Guidi,Atsuo Kawamura 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper discusses four quadrant SAZZ-1 chopper (Snubber Assisted Zero Voltage and Zero Current Switching) and its direct application to a EV (Electric Vehicle) power train. The performance of SAZZ-1 chopper is demonstrated on several prototypes. The first prototype is a 25 ㎾, 50 ㎑ SAZZ-1 with efficiency in the range between 96 % and 97 %. This was further improved by a redesigned SAZZ-1 chopper which reached even higher efficiency in the range of 97 % to over 98 %. Further on, a new mid-power 30 ㎾ water cooled SAZZ-1 chopper was constructed for KAST (Kanagawa Academy of Science and Technology) advanced EV project. This prototype was used and fully tested in an EV prototype named KAST-EVKana. As discussed, SAZZ-1 topology proved to be well performing in direct EV application.
Tsuruta Yukinori,Kawamura Atsuo The Korean Institute of Power Electronics 2006 JOURNAL OF POWER ELECTRONICS Vol.6 No.1
This paper is a record of the study on a high efficiency and high power chopper based on the new soft switching method QRAS (Quasi~resonant Regenerating Active Snubber) designed for a Fuel Cell Electric Vehicle (FCEV). This power chopper is basically proposed for 25kHz soft switching. To confirm the practicality and effectiveness of the converter, the fabrication of a prototype-model using IGBTs was completed. Additionally, a 8kW rating test, a light load test, a current discontinuous mode test and a stable operation resonance test was completed. The circuit geometry, the basic operation, and the 8kW one-tenth-prototype test results are reported with a $97.5\%$ efficiency measurement.
Driving Performance Experimental Analysis of Series Chopper Based EV Power Train
Kawamura, Atsuo,Guidi, Giuseppe,Watanabe, Yuki,Tsuruta, Yukinori,Motoi, Naoki,Kim, Tae-Woong The Korean Institute of Power Electronics 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.6
In this paper, the series chopper based power train for electric vehicle is proposed for aiming the increase of one battery charge driving distance. Both the motor test bench based experiments and the chassis dynamo based experiments are tested and then analyzed for EV driving performance that the proposed power train with SAZZ chopper and Quasi-PAM control scheme is compared with or without the series chopper. It is confirmed through two kinds of experimental analyses that the series chopper power train for EV can be useful to extend the driving distance if the high efficiency and the low weight of chopper are satisfied.
Driving Performance Experimental Analysis of Series Chopper Based EV Power Train
Atsuo Kawamura,Giuseppe Guidi,Yuki Watanabe,Yukinori Tsuruta,Naoki Motoi,Tae-Woong Kim 전력전자학회 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.6
In this paper, the series chopper based power train for electric vehicle is proposed for aiming the increase of one battery charge driving distance. Both the motor test bench based experiments and the chassis dynamo based experiments are tested and then analyzed for EV driving performance that the proposed power train with SAZZ chopper and Quasi-PAM control scheme is compared with or without the series chopper. It is confirmed through two kinds of experimental analyses that the series chopper power train for EV can be useful to extend the driving distance if the high efficiency and the low weight of chopper are satisfied.