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模拟的高效混合级联逆变器单相INDUCATION电动机使用可再生能源系统

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电压源逆变器常用的接口连接网格可再生能源和力量。为了提高机制系统的性能,invertersystem的拓扑结构和控制方法需要分析。本文提出了一种single-phasehybrid级联逆变器。它是基于两个不同电力设备- MOSFET和IGBT。的级联inverterconsists三H-bridges。的直流电压H-bridgemeets 1:2:4的比例关系和threemodules串联在交流端相连。低voltagebridge由mosfet,摘要利用高压介质和igbt组成的桥梁。这种混合cascadedinverter可以输出最多15 AC电压水平右半身,而低开关频率。同时,它满罐展示不同的电力设备的优点,然后逆变器操作灵活。采用电压渐次的andPWM载波调制方法。 Itis shown that the conversion efficiency reaches up to 98% andthe output THD is less than 5% (meets requirement of the IEEE standards). Meanwhile, with different combination ofswitching states, the distribution of input active power in eachH-bridge can be adjusted. As a result, for renewable energysystem, larger control freedom is provided and the need ofpower balance is satisfied. The validity of the inverter system istested by simulation.

B。Mallikarjunrao, AnnavarapuAnandaKumar

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