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首页> 外文期刊>Advances in power electronics >Carrier-Based Common Mode Voltage Control Techniques in Three-Level Diode-Clamped Inverter
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Carrier-Based Common Mode Voltage Control Techniques in Three-Level Diode-Clamped Inverter

机译：三级二极管夹紧逆变器中的基于载体的共模电压控制技术

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摘要

Switching converters are used in electric drive applications to produce variable voltage, variable frequency supply which generates harmful largedv/dtand high-frequency common mode voltages (CMV). Multilevel inverters generate lower CMV as compared to conventional two-level inverters. This paper presents simple carrier-based technique to control the common mode voltages in multilevel inverters using different structures of sine-triangle comparison method such as phase disposition (PD), phase opposition disposition (POD) by adding common mode voltage offset signal to actual reference voltage signal. This paper also presented the method to optimize the magnitude of this offset signal to reduce CMV and total harmonic distortion in inverter output voltage. The presented techniques give comparable performance as obtained in complex space vector-based control strategy, in terms of number of commutations, magnitude, and rate of change of CMV and harmonic profile of inverter output voltage. Simulation and experimental results presented confirm the effectiveness of the proposed techniques to control the common mode voltages.
机译：开关转换器用于电驱动器应用，以产生可变电压，可变频率电源，可产生有害的Laredv / DtAnd高频共模电压（CMV）。与传统的两级逆变器相比，多级逆变器产生较低的CMV。本文介绍了简单的基于载波的技术，用于使用诸如相位处理（PD），相位对比处理（POD）的不同结构来控制多级逆变器中的共模电压，通过将共模电压偏移信号添加到实际参考电压信号。本文还介绍了优化该偏移信号的大小以降低逆变器输出电压中的CMV和总谐波失真的方法。所提出的技术在基于复杂的空间矢量的控制策略中获得的可比性，就换向，幅度和逆变器输出电压的谐波分布和谐波曲线的变化率而言。仿真和实验结果提出了确认所提出的技术控制共模电压的有效性。

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