Current control of modular multilevel converters with phase‐shifted pwm using a daisy‐chained distributed control system
Current control of modular multilevel converters with phase‐shifted pwm using a daisy‐chained distributed control system
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DOI：
10.1002/tee.22905
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发表时间：
2019-03
影响因子：
1
通讯作者：
Yushi Koyama;T. Isobe
中科院分区：
文献类型：
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作者：
Yushi Koyama;T. Isobe
具有常规集中控制系统的模块化多电平转换器（MMC）具有用于门信号的许多光纤。由主控制器和菊花链单元控制器组成的菊花链分布式控制系统可以有效地减少光纤。然而，通信延迟发生在控制器之间，并影响当前的控制性能。本文采用菊花链分布式控制系统，在考虑通信延迟的情况下，建立了移相脉宽调制MMC的电流控制模型。我们推导了电流控制的广义脉冲传递函数，并通过数值分析和电路仿真进行了验证。讨论和分析了通信时延对电流控制的影响及其增益设计方法。2019年日本电气工程师协会由John Wiley & Sons公司出版
A modular multilevel converter (MMC) with a conventional centralized control system has many optical fibers for gate signals. A daisy‐chained distributed control system that consists of a primary controller and daisy‐chained cell controllers can reduce the fibers effectively. However, communication delays occur between the controllers and affect the current control performance. This article reveals the current control model of an MMC with phase‐shifted pulse width modulation using the daisy‐chained distributed control system considering the communication delays. We derived a generalized pulse transfer function of the current control and verified it with numerical analyses and circuit simulations. The impacts of the communication delays on the current control and its gain design method are also discussed and analyzed. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.