A Neutral-Point Diode-Clamped Converter With Inherent Voltage-Boosting for a Four-Phase SRM Drive
A Neutral-Point Diode-Clamped Converter With Inherent Voltage-Boosting for a Four-Phase SRM Drive
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用于四相 SRM 驱动的具有固有升压功能的中点二极管钳位转换器
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
B. Williams
中科院分区：
文献类型：
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作者：
A. Abdel;K. Ahmed;Shuren Wang;A. Massoud;B. Williams
提出了一种用于四相开关磁阻电动机驱动的新型不对称中点二极管箝位（NPC）多电平变换器。内置NPC箝位电容既可用于电压电平箝位，也可用作直流轨升压电容，以提高电机的输出功率，尤其适用于高速电动汽车应用。新的转换器允许将再生能量回收回直流电源，用于快速机器制动，从而提高整体驱动效率。转换器操作的不同模式的分析，沿着与设计公式的大小的升压电容器，是详细的。提出了电容对升压电压和提高电机基础速度的影响。仿真和实验结果证实了该变换器的有效性。
This article proposes a new asymmetric neutral-point diode-clamped (NPC) multilevel converter for a four-phase switched reluctance motor drive. The inbuilt NPC clamping capacitors are used for both voltage level clamping and also as dc rail voltage-boosting capacitors to increase the output power of the motor, particularly for high-speed electric vehicle applications. The new converter allows regenerative energy to be recovered back to the dc supply for rapid machine braking, thus increasing overall drive efficiency. Analysis of the different modes of converter operation, along with design equations for sizing the voltage-boosting capacitors, is detailed. The effect of capacitance on boost voltage and increased motor base speed is presented. Simulation and experimental results confirm the effectiveness of the proposed converter.