摘要
为实现电动汽车能量稳定高效地回馈给智能电网,三相逆变器控制策略的研究仍是当前研究的热点。提出改进的基于dq坐标系下的前馈解耦双闭环控制策略,使系统在单位功率因数下工作,减小并网过程中电流的冲击和谐波,改善控制效果。基于三相静止坐标系和两相旋转坐标系,分别建立三相逆变器的数学模型,在电压、电流双闭环控制的基础上,在电流环中引入电流前馈解耦。建立Simulink仿真模型,分析逆变过程开关器件的脉冲信号、直流侧电压、交流侧电压与电流、谐波等,验证了所提控制策略的可行性和有效性。
To realize that the energy of electric vehicles can be fed back to the smart grid stably and efficiently, the research on the control strategy of three-phase inverter is still a hot topic. An improved feedforward decoupling double closed-loop control strategy based on the dq coordinate system is proposed, which enables the system to work under unity power factor, reduces the current impact and harmonics during grid connection, and improves the control effect. Based on the three-phase abc stationary coordinate system and the two-phase dq rotating coordinate system, the mathematical model of three-phase inverter is established respectively. The current feedforward decoupling is introduced into the current loop based on the voltage and current double closed-loop control method, and the Simulink simulation model is established. The pulse signal of the switching device, DC side voltage, AC side voltage and current, harmonics, etc. in the inverter process are analyzed. And the feasibility and effectiveness of the control strategy are verified.
作者
靳舵
张厚升
李家琪
蒋俊杰
王傲
JIN Duo;ZHANG Housheng;LI Jiaqi;JIANG Junjie;WANG Ao(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255022,Shandong,China)
出处
《实验室研究与探索》
CAS
北大核心
2022年第11期114-118,217,共6页
Research and Exploration In Laboratory
基金
国家自然科学基金面上项目(62076152)
山东省研究生教育质量提升计划项目(SDYKC21127、SDYAL19108)。
关键词
电动汽车
智能电网
三相逆变器
双闭环控制
electric vehicle
smart grid
three-phase inverter
double closed-loop control
