Implementation and control of distributed PWM cascaded multilevel inverters with minimal harmonic distortion and common-mode voltage
Implementation and control of distributed PWM cascaded multilevel inverters with minimal harmonic distortion and common-mode voltage
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DOI：
10.1109/tpel.2004.839830
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发表时间：
2005-01
影响因子：
6.7
通讯作者：
Poh Chiang Loh;D. G. Holmes;T. Lipo
中科院分区：
文献类型：
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作者：
Poh Chiang Loh;D. G. Holmes;T. Lipo
级联型多电平逆变器可以通过单相模块化功率桥的串联来实现。这项工作详细介绍了这些桥梁应如何实施和操作，以同步其脉宽调制（PWM）载波，基本的参考和采样实例，以实现网络控制的级联逆变器与分布式PWM计算和整体优化系统性能。本文首先详细介绍了集成功率桥的开发和控制，设计了自己的数字信号处理器和相关的控制电路。详细描述了网络控制算法和信号协议，需要同步的多个电力桥通过一个动态快速的数据通信网络，然后提出，以实现最佳的谐波消除和降低共模电压。所提出的模块化实现概念的实用性和性能已被确认通过使用模块化级联五电平逆变器原型获得的仿真和实验结果之间的密切匹配。
Cascaded multilevel inverters can be implemented through the series connection of single-phase modular power bridges. This work presents details on how these bridges should be implemented and operated to synchronize their pulse-width-modulation (PWM) carriers, fundamental references and sampling instances to implement a network-controlled cascaded inverter with distributed PWM computation and overall optimal system performance. The paper begins by detailing the development and control of an integrated power bridge, designed with its own digital signal processor and associated control circuitry. Details describing the networked control algorithm and signal protocol needed for synchronizing the multiple power bridges through a dynamically fast data communication network, are then presented to achieve optimum harmonic cancellation and reduced common-mode voltage. The practicality and performance of the presented modular implementation concepts have been confirmed through the close match between simulation and experimental results obtained using a modular cascaded five-level inverter prototype.