Motor Overvoltage Mitigation on SiC MOSFET Drives Exploiting an Open-End Winding Configuration
Motor Overvoltage Mitigation on SiC MOSFET Drives Exploiting an Open-End Winding Configuration
复制标题
利用开路绕组配置来缓解 SiC MOSFET 驱动器上的电机过压
DOI：
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发表时间：
2019
影响因子：
6.7
通讯作者：
S. Russo
中科院分区：
文献类型：
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作者：
S. de Caro;S. Foti;T. Scimone;A. Testa;G. Scelba;M. Pulvirenti;S. Russo
由于开关时间非常短且开关频率很高，因此，电压波沿沿着电力电缆的反射现象对配备碳化硅功率MOSFET的交流电机驱动器尤其具有威胁。过电压抑制电阻电感电容（RLC）网络通常被添加，但导致额外的成本和较低的效率。本文提出了一种完全不同的过电压缓解方法，利用一个开放式绕组电机配置。实际上，通过简单地协调两个逆变器的操作来减轻电机相绕组端子上发生的过电压;因此，不需要无源RLC网络。所提出的方法旨在作为一种手段，以提供一个更有价值的功能，以开放绕组系统在没有额外的成本，但它也可以作为一种替代传统的桥式逆变器配备过电压缓解设备的价值。
Voltage wave reflection phenomena along power cables are particularly threatening on ac motor drives equipped with silicon carbide power mosfets due to very short switching times and high switching frequency. Overvoltage suppression resistance inductance capacitance (RLC) networks are usually added but leading to extra cost and a lower efficiency. A completely different overvoltage mitigation approach is presented in this paper exploiting an open-end winding motor configuration. Overvoltage occurring on the terminals of motor phase windings are, in fact, mitigated by simply coordinating the operations of the two inverters; thus, no passive RLC networks are required. The proposed approach is intended as a mean to provide a further valuable feature to open-winding systems at no extra cost, but it can be also valued as an alternative to conventional bridge inverters equipped with overvoltage mitigation devices.