A Variable DC-Link Voltage Determination Method for Motor Drives with SiC MOSFETs

Tien-Sheng Li, Yi-Han Yang, Che-An Cheng, Yaow-Ming Chen
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引用次数: 2

Abstract

This paper proposed a variable DC-link voltage determination method for motor drive using Silicon Carbide (SiC) MOSFETs. Usually, the voltage source inverter (VSI) with a constant DC-link voltage is adopted for the motor drive applications. However, operating in low-speed region does not require high voltage and higher voltage causes higher voltage harmonics. On the other hand, lower DC-link voltage limits its acceleration response. Therefore, an approach to determine the appropriate variable DC-link voltage is proposed in this paper. The power switches in the hardware prototype are implemented with SiC MOSFETs to achieve higher performance. Both simulation and experimental results are shown to verify the performance of the proposed DC-link voltage determination method.
SiC mosfet驱动电机的可变直流电压测定方法
提出了一种利用碳化硅(SiC) mosfet驱动电机的可变直流链路电压测定方法。电机驱动通常采用直流链路电压恒定的电压源逆变器(VSI)。然而,在低速区域运行不需要高电压,高电压会导致高电压谐波。另一方面,较低的直流电压限制了其加速响应。因此,本文提出了一种确定合适的可变直流链路电压的方法。硬件原型中的功率开关采用SiC mosfet实现,以实现更高的性能。仿真和实验结果验证了所提出的直流链路电压测定方法的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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