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PWM A-CHB Converter Based on Trinary Multilevel Converter: Topology, Switching Algorithm, and Stability Analysis
IEEE Transactions on Industrial Electronics ( IF 7.7 ) Pub Date : 2019-06-01 , DOI: 10.1109/tie.2018.2863201
Saleh Ziaeinejad , Ali Mehrizi-Sani

A trinary multilevel converter uses a few heterogeneous H-bridge submodules (SMs) to synthesize an output voltage with multiple levels. Two major limitations of this converter are that it needs multiple dc sources and it cannot operate under pulsewidth modulation (PWM). This paper addresses these limitations by adding a low-voltage H-bridge SM to this converter and proposing a new switching algorithm. The resulting PWM-based asymmetric cascaded H-bridge converter uses only one dc source and synthesizes a high-quality output voltage. This improved converter can be a potential choice for real and reactive power support in power system applications. This paper also proposes methods for stability analysis and design of this converter. Experimental case studies evaluate the performance of the proposed converter for both standalone and grid-connected modes of operation.

中文翻译:

基于三元多电平转换器的PWM A-CHB转换器:拓扑、开关算法和稳定性分析

三元多电平转换器使用几个异构 H 桥子模块 (SM) 来合成具有多个电平的输出电压。该转换器的两个主要限制是它需要多个直流电源,并且不能在脉宽调制 (PWM) 下运行。本文通过向该转换器添加一个低压 H 桥 SM 并提出一种新的开关算法来解决这些限制。由此产生的基于 PWM 的非对称级联 H 桥转换器仅使用一个直流电源并合成高质量的输出电压。这种改进的转换器可以成为电力系统应用中支持有功功率和无功功率的潜在选择。本文还提出了该转换器稳定性分析和设计的方法。
更新日期:2019-06-01
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