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首页> 外文期刊>Power Electronics, IEEE Transactions on >A Modular and Scalable Structure Using Multiparallel-Connected Series-Voltage Compensators for Supply Voltage Regulation
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A Modular and Scalable Structure Using Multiparallel-Connected Series-Voltage Compensators for Supply Voltage Regulation

机译:使用多并联串联电压补偿器进行电源调节的模块化可扩展结构

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摘要

A modular and scalable voltage-regulation structure for enhancing service continuity and flexibly changing the system power rating is proposed. The methodology is based on paralleling multiple series-voltage compensators, namely multiparallel-connected series-voltage compensator (MSVC), to regulate the load voltage. The output voltage of each compensator is controlled locally by adjusting the phase angle of the output voltage of the inverter in each compensator, while the output current of each compensator is coupled to two adjacent compensators via two coupling transformers. The coupling transformers form a daisy-chained structure. The load current can be shared near-equally among the compensators through the transformer structure. The operating principle, steady-state and transient current-sharing characteristics of the architecture will be discussed and illustrated. A simplified design procedure will be given. A 3-kVA MSVC test bed with three parallel-connected single-phase compensator units has been built and evaluated. The response of the MSVC system with each compensator unit engaged and disengaged momentarily will be investigated. Such structure is applicable for regulating and stabilizing the supply voltage for consumers at the distribution side.
机译:提出了一种模块化且可扩展的电压调节结构,以增强服务连续性并灵活地更改系统额定功率。该方法基于并联多个串联电压补偿器,即多并联串联的串联电压补偿器(MSVC),以调节负载电压。每个补偿器的输出电压通过调节每个补偿器中逆变器输出电压的相角来局部控制,而每个补偿器的输出电流则通过两个耦合变压器耦合到两个相邻的补偿器。耦合变压器形成菊花链结构。负载电流可以通过变压器结构在补偿器之间几乎均分。将讨论和说明该架构的工作原理,稳态和瞬态均流特性。将给出简化的设计程序。带有3个并联的单相补偿器单元的3-kVA MSVC测试台已经建立并评估。将研究每个补偿器单元瞬时接合和分离的MSVC系统的响应。这种结构适用于调节和稳定配电侧消费者的电源电压。

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