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EMI Noise Reduction with New Active Zero State PWM for Integrated Dynamic Brake Systems

  • Baik, Jae-Hyuk (School of Electrical Engineering, Korea University) ;
  • Yun, Sang-Won (EBS Center, Global R&D, Mando Corporation) ;
  • Kim, Dong-Sik (Department of Electrical Engineering, Soonchunhyang University) ;
  • Kwon, Chun-Ki (Department of Medical IT Engineering, Soonchunhyang University) ;
  • Yoo, Ji-Yoon (School of Electrical Engineering, Korea University)
  • Received : 2017.09.14
  • Accepted : 2017.11.18
  • Published : 2018.05.20

Abstract

Based on the application of an integrated dynamic brake (IDB) system that uses a PWM inverter fed-AC motor drive to operate the piston, a new active zero state PWM (AZSPWM) is proposed to improve the stability and reliability of the IDB system by suppressing the conducted electro-magnetic interference (EMI) noise under a wide range of load torque. The new AZSPWM reduces common-mode voltage (CMV) by one-third when compared to that of the conventional space vector PWM (CSVPWM). Although this method slightly increases the output current ripple by reducing the CMV, like the CSVPWM, it can be used within the full range of the load torque. Further, unlike other reduced common-mode voltage (RCMV) PWMs, it does not increase the switching power loss. A theoretical analysis is presented and experiments are performed to demonstrate the effectiveness of this method.

Keywords

References

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