| 一种新型无差拍UPQC预测直接控制策略 |
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| 引用本文：王贵峰,祝莘莘,武泽文.一种新型无差拍UPQC预测直接控制策略[J].电网与清洁能源,2023,39(11):40~49 |
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| 基金项目:国家自然科学基金项目（51707086） |
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| 中文摘要:针对统一电能质量调节器（unified power quality conditioner， UPQC）传统线性控制算法中存在多个PI控制器及PWM调制环节，导致系统参数整定困难、结构复杂的问题，提出一种新型无差拍UPQC预测直接控制策略。推导并建立同步旋转坐标系下UPQC串、并联侧预测直接控制模型；基于无差拍控制原理与有功功率平衡原则构建了串联侧给定电流产生机制，实现了直流侧电压的无差拍控制和网侧电流的预测直接控制；基于无差拍控制原理与负载侧电压恒定原则构建了并联侧给定电流产生机制，实现了负载侧电压的无差拍预测直接控制。仿真与实验分析结果表明，所提算法无PI和PWM调制环节，有效简化了控制系统结构，并提高了系统的动态性能及补偿效果。 |
| 中文关键词:电能质量 统一电能质量调节器 有限集模型预测控制 直接控制策略 无差拍控制 |
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| A Novel Deadbeat Predictive Direct Control Strategy of UPQC |
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| Abstract:As the traditional linear control algorithm of the unified power quality conditioner（UPQC）has multiple PI controllers and PWM modulation links， which makes the system parameter adjustment difficult and the structure complex， this paper proposes a novel deadbeat predictive direct control strategy of UPQC. Firstly， the predictive direct control model of UPQC series and parallel side in the synchronous rotating coordinate system is derived and established； secondly， based on the principle of deadbeat control and the principle of active power balance， the generation mechanism of the given current on the series side is constructed to realize the deadbeat control of DC side voltage and predictive direct control of the network side current； Secondly， based on the principle of deadbeat control and the principle of constant voltage on the load side， the given current generation mechanism of the parallel side is constructed， and the prediction deadbeat direct control of load side voltage is realized. The proposed algorithm has no PI and PWM modulation links， and effectively simplifies the structure of the control system， and improves the dynamic performance and compensation effect of the system. The simulation and experimental results have verified the feasibility and effectiveness of the proposed control strategy. |
| keywords:power quality unified power quality conditioner finite control set model predictive control direct control strategy deadbeat control |
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