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开关磁阻电机功率变换器功耗计算

, PP. 346-351

Keywords: 开关磁阻电机,功率变换器,电压斩波控制,功耗计算

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Abstract:

以开关磁阻电机不对称半桥型功率变换器为研究对象,介绍了电压斩波控制下功率变换器的三种工作状态,给出了各器件的电流波形。以电流最大值点和续流开始时刻点为基础,对导通管电流波形进行了分段线性化,结合理想相电感模型,推导出导通管功耗的计算公式。对斩波管的电流波形进行了压缩和简化处理,得到了斩波管功耗计算公式和功率变换器功耗计算公式。公式计算结果与实验结果较为吻合,证明了该功耗计算方法的正确性和可行性。

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