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首页> 外文期刊>Industrial Electronics, IEEE Transactions on >Application of Balancing Circuit for DC-Link Voltages Balance in a Single-Phase Diode-Clamped Inverter With Two Three-Level Legs
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Application of Balancing Circuit for DC-Link Voltages Balance in a Single-Phase Diode-Clamped Inverter With Two Three-Level Legs

机译：直流母线电压平衡的平衡电路在带有两个三电平臂的单相二极管钳位逆变器中的应用

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摘要

This paper presents investigations of dc-link voltages balance with the use of a passive RLC circuit in a single-phase diode-clamped inverter composed of two three-level legs. Application of the balancing circuit in the diode-clamped inverter needs proper PWM generation but the modulation method is the same for both in the balanced and unbalanced state. This method of dc-link voltages balance does not need any measurements or additional control, and this ensures fast response and low energy losses. This paper also presents mathematical analysis of the PWM modulation method and the inverter operation, and an analytical description of the natural balancing process with contribution of the load current and the balancing circuit current. Simulations and experimental results of the inverter with FPGA-based control are presented to confirm the effectiveness of the natural balancing process.
机译：本文介绍了在由两个三电平支路组成的单相二极管钳位逆变器中使用无源RLC电路对直流链路电压平衡的研究。平衡电路在钳位二极管的逆变器中的应用需要适当的PWM产生，但是在平衡和不平衡状态下的调制方法都相同。这种直流母线电压平衡方法不需要任何测量或附加控制，从而确保了快速响应和低能量损耗。本文还介绍了PWM调制方法和逆变器操作的数学分析，以及对负载电流和平衡电路电流的影响的自然平衡过程的分析描述。提出了基于FPGA控制的逆变器的仿真和实验结果，以证实自然平衡过程的有效性。

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