Common-mode voltage analysis and suppression in five-level modular composited converter

Hu, Jiaxing; Tang, Junsong; Ye, Mei; Hu, Senjun; Li, Wuhua; He, Xiangning

doi:10.1109/ecce.2017.8096827

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Because the CMV is coupled with the parasitic capacitance of the motor, the shaft voltage is induced on the motor shaft, and the shaft current is generated, which causes the corrosion of the bearing [3]- [5]. There have been many studies on the factors that affect the CMV and its suppression strategies [7] [8].…”

Section: Introductionmentioning

confidence: 99%

Brushless DC Motor Common-mode Voltage Analysis

Wei

Wang

2023

J. Phys.: Conf. Ser.

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Brushless DC motors (BLDCMs) with their own performance of obvious advantages: good speed regulation performance and high efficiency. BLDCMs have continuously replaced brushed DC and induction motors in many competitive fields and obtained more extensive applications. The common-mode voltage (CMV) in the motor parasitic capacitance coupling in the motor shaft induces the shaft voltage. It then triggers the shaft current, resulting in electrical corrosion of the bearing. It is necessary to conduct a systematic scientific analysis of its CMV. For different modulation methods, the phase voltages under three conditions without PWM modulation, HPWM_LPWM modulation, and HPWM_LON modulation are studied, FFT, and then the CMV is analyzed. Then, the correctness of the analysis is verified by simulation analysis.

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