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Switching strategy for six switches forced commutated cycloconverter with several advantages

机译：具有六个优点的六个开关强制换向环变频器的开关策略

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摘要

Forced commutated cycloconverters (FCCs) are very popular topics today which can generate variable frequency and variable voltage in output. These converters include six switches in each phase where operation of these converters depends on switching strategy. This study describes a novel switching strategy for six switches FCC where this strategy transfers seven input voltages to FCC output. In each switching period, among seven input voltages, there are only two input voltages which surround reference output voltage. Hence, the proposed strategy makes these two input voltages around reference voltage transfer to FCC output in each switching period. As a result, average value of FCC output voltage is the same as reference voltage. Main benefits of this switching strategy are minimisation of total harmonic distortion, reduction of dv/dt stresses on the load, lower harmonic components, high-voltage modulation index and performance in unbalance or non-sinusoidal input voltage condition. The operation and performance of the proposed switching strategy has been verified by the simulation and measurement results which were carried out for three-phase to single-phase converter. The proposed switching strategy serves as the conceptual platform for extending the principles to other FCC topologies.
机译：强制换向循环变频器（FCC）是当今非常流行的主题，可以在输出中产生可变频率和可变电压。这些转换器在每个阶段均包含六个开关，其中这些转换器的操作取决于开关策略。这项研究描述了一种针对六个开关FCC的新颖开关策略，其中该策略将七个输入电压传输到FCC输出。在每个开关周期中，七个输入电压中只有两个输入电压围绕参考输出电压。因此，所提出的策略使在每个开关周期内参考电压附近的这两个输入电压转移到FCC输出。结果，FCC输出电压的平均值与参考电压相同。这种开关策略的主要优点是最大程度地减小了总谐波失真，降低了负载上的dv / dt应力，降低了谐波分量，提高了电压调制指数以及在不平衡或非正弦输入电压条件下的性能。通过对三相到单相转换器进行的仿真和测量结果，验证了所提出的开关策略的操作和性能。提议的交换策略是将原理扩展到其他FCC拓扑的概念平台。

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    《Power Electronics, IET》 |2014年第2期|398-405|共8页
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