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Loss Characteristics of 6.5 kV RC-IGBT Applied to a Traction Converter

Author

Listed:
  • Xianjin Huang

    (School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

  • Chao Ling

    (School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

  • Dengwei Chang

    (School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

  • Xiaojie You

    (School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

  • Trillion Q. Zheng

    (School of Electrical Engineering, Beijing Jiaotong University, No. 3 Shangyuancun, Beijing 100044, China)

Abstract

6.5 kV level IGBT (Insulated Gate Bipolar Transistor) modules are widely applied in megawatt locomotive (MCUs) traction converters, to achieve an upper 3.5 kV DC link, which is beneficial for decreasing power losses and increasing the power density. Reverse Conducting IGBT (RC-IGBT) constructs the conventional IGBT function and freewheel diode function in a single chip, which has a greater flow ability in the same package volume. In the same cooling conditions, RC-IGBT allows for a higher operating temperature. In this paper, a mathematic model is developed, referring to the datasheets and measurement data, to study the 6.5 kV/1000 A RC-IGBT switching features. The relationship among the gate desaturated pulse, conducting losses, and recovery losses is discussed. Simulations and tests were carried out to consider the influence of total losses on the different amplitudes and durations of the desaturated pulse. The RC-IGBT traction converter system with gate pulse desaturated control is built, and the simulation and measurements show that the total losses of RC-IGBT with desaturated control decreased comparing to the RC-IGBT without desaturated control or conventional IGBT. Finally, a proportional small power platform is developed, and the test results prove the correction of the theory analysis.

Suggested Citation

  • Xianjin Huang & Chao Ling & Dengwei Chang & Xiaojie You & Trillion Q. Zheng, 2017. "Loss Characteristics of 6.5 kV RC-IGBT Applied to a Traction Converter," Energies, MDPI, vol. 10(7), pages 1-17, July.
  • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:891-:d:103295
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    References listed on IDEAS

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    1. Zhun Meng & Yi-Feng Wang & Liang Yang & Wei Li, 2017. "Analysis of Power Loss and Improved Simulation Method of a High Frequency Dual-Buck Full-Bridge Inverter," Energies, MDPI, vol. 10(3), pages 1-18, March.
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    Cited by:

    1. Xianjin Huang & Dengwei Chang & Chao Ling & Trillion Q. Zheng, 2017. "Research on Single-Phase PWM Converter with Reverse Conducting IGBT Based on Loss Threshold Desaturation Control," Energies, MDPI, vol. 10(11), pages 1-17, November.

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