论文信息 - A High Efficiency and High Power Chopper Circuit QRAS using Soft Switching under Test Evaluation at 8kW

A High Efficiency and High Power Chopper Circuit QRAS using Soft Switching under Test Evaluation at 8kW

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.

Atsuo Kawamura | Yukinori Tsuruta

[1] Fred C. Lee,et al. Novel zero-voltage-transition PWM converters , 1992 .

[2] Junji Hirai,et al. A Realization Method of Fault-tolerant Control of Flexible Arm under Sensor Fault by Using an Adaptive Sensor Signal Observer , 2006 .