EPS电能转换系统的有源阻尼解耦控制策略研究  

Research on Active Damping Decoupling Control Strategy of EPS Power Conversion System

作　　者：程福泉 杨朝廷 刘薇 张烨 丁进伟[1] CHENG Fuquan;YANG Chaoting;LIU Wui;ZHANG Ye;DING Jinwei(Xiluodu Hydropower Plant of China Yangtze Power Co.Ltd.,Zhaotong 657300 China)

机构地区：[1]中国长江电力股份有限公司溪洛渡水力发电厂,云南省昭通市657300

出　　处：《水电与抽水蓄能》2023年第6期80-86,共7页Hydropower and Pumped Storage

摘　　要：三相电流源型PWM整流器(Current Source Rectifier,CSR)因其可实现网侧单位因数和正弦波电流控制,具备电能双向传输能力,广泛应用于应急电源系统(Emergency Power Supply,EPS)的电能转换系统。针对CSR的LC滤波电路容易产生谐振,以及带容性负载输出时,数学模型阶数增加导致控制器参数设计复杂等问题,提出了一种组合型有源阻尼解耦控制策略。首先,在d-q坐标下建立带容性负载的CSR数学模型;其次,CSR交流侧采用电容电压反馈(Capacitance Voltage Feedback,CVF)和电感电流反馈(Inductance Current Feedback,ICF)的组合型有源阻尼控制,以抑制交流侧LC滤波器谐振尖峰并提高系统阻尼比,直流侧采用状态反馈控制以稳定直流母线电压;然后,调节d轴开关分量实现系统网侧电压电流同相位运行;最后,通过MATALB/Simulink仿真及实验,验证了该控制策略的可行性。Three-phase current source rectifier(CSR)is widely used in emergency power supply(EPS)power conversion systems because it can realize grid-side unit factor and sine wave current control,and has the ability to transmit power bidirectionally.LC filter circuits for CSR are prone to reso-nance,and when there is a capacitive load output,the order of the mathematical model increases,resulting in complex parameter design of the controller.A combined active damping decoupling control strategy is proposed.Firstly,a CSR mathematical model with capacitive load was established in d-q coordinates.Secondly,the combined active damping control of capacitance voltage feedback(CVF)and inductance current feedback(ICF)is used on the AC side of the CSR to suppress the resonance spike of the LC filter on the AC side and improve the damping ratio of the system.The DC side adopts state feedback control to stabilize the DC bus voltage.Then,the d-axis switch component is adjusted to realize.

关 键 词：有源阻尼 解耦控制 状态反馈 电流源PWM型整流器 

分 类 号：TM461.3[电气工程—电器]