A Low-Loss Compact Reflected Wave Canceller for SiC Motor Drives
A Low-Loss Compact Reflected Wave Canceller for SiC Motor Drives
复制标题
用于 SiC 电机驱动的低损耗紧凑型反射波消除器
DOI：
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发表时间：
2021
影响因子：
6.7
通讯作者：
F. Peng
中科院分区：
文献类型：
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作者：
Yu Zhang;Hui Li;F. Peng
由于SiC器件的dv/dt$明显高于Si器件，SiC器件的应用使得电机驱动中反射波现象引起的过电压变得更严重。本文介绍了一种低损耗、紧凑型有源反射波消除器（ARWC），用于抑制电机端的过电压。所提出的ARWC电路使用低电流器件将脉宽调制电压波形的上升沿和下降沿分为两步，而第二步消除了第一步反射。此外，ARWC电路不需要额外的直流电源，使ARWC自我维持。一个相6千伏安的应用程序与不建议ARWC的实验结果提供和比较，以验证所提出的方法的有效性。
The overvoltage caused by reflected wave phenomenon in motor drives becomes worse with the application of SiC devices due to the significantly higher $dv/dt$ compared with that of Si devices. This letter presents a low-loss and compact active reflected wave canceller (ARWC) to suppress the overvoltage at the motor terminal. The proposed ARWC circuit uses low current devices to break the rising and falling edges of the pulsewidth modulation voltage waveforms to two steps, whereas the second step cancels the first step reflection. In addition, the ARWC circuit does not require an additional dc power supply that allows the ARWC self-sustained. The experimental results on one phase 6 kVA application with and without proposed ARWC are provided and compared to verify the validity of proposed method.