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改进Z源逆变器的三次谐波注入控制策略

, PP. 114-119

Keywords: Z源逆变器,谐波注入,电流纹波

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Abstract:

改进Z源逆变器与传统Z源逆变器相比具有Z源网络电容电压低、有内在的抑制启动冲击的能力等优点。但基于简单升压控制的改进Z源逆变器存在功率器件电压应力大以及Z源网络电感电流纹波大的缺陷。本文将三次谐波注入调制策略应用于改进Z源逆变器,与简单升压控制相比,能有效减小功率器件电压应力和Z网络电感电流脉动。对这两种调制策略应用于改进Z源逆变的综合性能进行了对比分析。在理论研究的基础上,通过仿真和实验验证了三次谐波注入调制策略的优点。

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