Analysis and Mitigation of Common-Mode Noise With Different Modulation Strategies in SiC-Fed Three-Phase Brushless DC Motor Drive

被引：3
作者：
Singh, Samarjeet [1 ]
Gorla, Naga Brahmendra Yadav [2 ]
Jayaraman, Kalaiselvi [1 ]
Pou, Josep [3 ]
机构：
[1] IIT Ropar, Elect Engn Dept, Rupnagar 140001, India
[2] IIT Palakkad, Elect Engn Dept, Palakkad 678623, India
[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Jurong West 639798, Singapore
来源：
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS | 2024年 / 12卷 / 01期
关键词：
Pulse width modulation; Voltage; Motor drives; Inductors; Switches; Silicon carbide; Leakage currents; Bipolar modulation; brushless dc (BLdc) motor drive; common-mode (CM) noise; leakage current; silicon carbide (SiC); unipolar modulation; EMI; REDUCTION; INVERTER; VOLTAGE; DESIGN;
D O I：
10.1109/JESTPE.2023.3344532
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Pulsewidth modulation (PWM) strategies for brushless dc (BLdc) drives, namely, unipolar and bipolar schemes, focus on optimizing torque ripple, efficiency, or vibration performance. Adoption of wide bandgap (WBG) devices such as silicon carbide (SiC) for high-voltage BLdc drives has further improved the efficiency and power density of the drive; however, the critical issue of common-mode (CM) noise in such drives is seldom investigated. Therefore, the impact of two classes of PWM schemes in 120 degrees conduction mode, namely: 1) unipolar and 2) bipolar PWM schemes on the CM voltage, is investigated in this article. First, a generalized mathematical expression for CM voltage is derived and validated through experiments for various PWM schemes in a BLdc drive. Furthermore, the impact of CM voltage on CM current is thoroughly analyzed for 10- and 100-kHz switching frequencies. The CM choke requirements with bipolar and unipolar PWM schemes for different switching frequencies are compared. Finally, the theoretical analysis is substantiated by the experimental results on a 1.5-kW, 310-V SiC-fed BLdc drive.
引用
收藏
页码：663 / 674
页数：12
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