Efficiency modeling and evaluation of a resonant snubber based soft-switching inverter for motor drive applications
Efficiency modeling and evaluation of a resonant snubber based soft-switching inverter for motor drive applications
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DOI：
10.1109/pesc.1995.474929
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发表时间：
1995-06
期刊：
影响因子：
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通讯作者：
J. Lai;R. W. Young;G. W. Ott;J. McKeever
中科院分区：
文献类型：
--
作者：
J. Lai;R. W. Young;G. W. Ott;J. McKeever
建立了基于谐振缓冲器的软开关逆变器的分析模型。该模型采用损耗分离方法来评估单个部件的损耗。由于逆变器电路的对称性，该模型适用于单相和三相逆变器。一个单相逆变器已建成和测试与单相感应电动机驱动风扇负载，以验证所开发的模型。根据实验结果拟合出单相感应电动机的等效模型。分析结果表明，合理的协议与实验结果。同样的效率评估方法，然后施加到一个非零电压开通硬开关逆变器，并与软开关逆变器的结果进行了比较。基于谐振缓冲器的软开关逆变器显示出比硬开关逆变器显著的效率提高，特别是在低速操作下。
This paper establishes an analytical model for a resonant snubber based soft-switching inverter. The model adopts the loss separation method to evaluate losses in individual components. Because of symmetry of the inverter circuit, the developed model is suitable for both single-phase and three-phase inverters. A single-phase inverter has been built and tested with a single-phase induction motor driving a fan load to verify the developed model. The equivalent single-phase induction motor model was curve-fitted from experimental results. The analytical results demonstrated reasonable agreement with the experimental results. The same efficiency evaluation method was then applied to a nonzero-voltage turn-on hard-switching inverter, and the results were compared with that of the soft-switching inverter. The resonant snubber based soft-switching inverter shows substantial efficiency improvement over the hard-switching inverter, especially in low speed operation.>