Design of Controller for MMC-RPC Based on Differential Flatness Control Theory

SONG Pinggang; ZHOU Zhenbang; LIN Jiatong; DONG Hui; ZHANG Wei

doi:10.13890/j.issn.1000-128x.2017.03.003

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Design of Controller for MMC-RPC Based on Differential Flatness Control Theory

更新时间：2021-12-13

- Design of Controller for MMC-RPC Based on Differential Flatness Control Theory
- Electric Drive for Locomotives Issue 3, Pages: 14-19(2017)
- 作者机构：
  
  1. 华东交通大学电气与自动化工程学院,江西,南昌,330013
  2. 厦门轨道交通运营有限公司,福建,厦门,361000
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2017.03.003
  CLC：
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SONG Pinggang, ZHOU Zhenbang, LIN Jiatong, et al. Design of Controller for MMC-RPC Based on Differential Flatness Control Theory. [J]. Electric Drive for Locomotives (3):14-19(2017)
DOI：

SONG Pinggang, ZHOU Zhenbang, LIN Jiatong, et al. Design of Controller for MMC-RPC Based on Differential Flatness Control Theory. [J]. Electric Drive for Locomotives (3):14-19(2017) DOI： 10.13890/j.issn.1000-128x.2017.03.003.

摘要

为提高MMC-RPC 的抗扰动性能并达到更为精确的控制效果，对采用模块化多电平换流器（MMC）的铁路功率调节器（RPC）建立了动态数学模型，在简要介绍微分平坦控制理论（FBC）的基础上于MMC-RPC 的动态数学模型中选取了2 组输出量，使MMC-RPC 满足微分平坦系统的条件。由微分平坦理论设计了MMC-RPC 的控制器，其结构包含前馈控制与误差补偿2 个环节；控制器采用串级连接，由外环产生平坦输出的参考轨迹，内环产生MMC 期望输出的d、q 轴电压分量。最后在3 种工况下分别对串级FBC 控制的MMC-RPC 与串级PI 控制的MMC-RPC 进行仿真，仿真结果验证了FBC 控制系统的有效性与优越性。

Abstract

In order to improve the anti-disturbance performance and achieve more accurate control effect of MMC-RPC, a dynamic mathematical model was established for the railway static power conditioner (RPC) by using the modular multilevel converter (MMC) structure. Based on the introduction of differential flatness control theory (FBC), two set of outputs were selected from the dynamic mathematical model of MMC-RPC, which enabled MMC-RPC to meet the conditions of the differential flatness system. The structure of the FBC controller had two parts, i.e. feed forward control and error compensation respectively, with cascade connection. The outer loop generated a flat output which was the reference trajectory, and the inner loop generated the d and q axis voltage components which were the expected output of MMC. The simulation result of the MMC-RPC system which was controlled by FBC and PI in 3 working conditions verified the validity and superiority of the FBC control system.

关键词

模块化多电平换流器铁路功率调节器微分平坦串级控制比例积分

Keywords

modular multilevel converterrailway static power conditionerdifferential flatnesscascade controlproportional integral

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