储能电站变流器设计与仿真研究  

Design and simulation of converter for energy storage power station

作　　者：尹世界 郭韵 YIN Shijie;GUO Yun(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海市201620

出　　处：《农业装备与车辆工程》2023年第7期38-41,共4页Agricultural Equipment & Vehicle Engineering

基　　金：长三角地区智慧储能关键技术集成解决方案研究及商业化综合应用示范(19195810800)。

摘　　要：为了有效解决交流子网与直流子网间的功率传输,降低电流谐波,基于三相电压源型变流器及变流器的控制方法,在MATLAB R2018a环境下搭建了储能变流器的整体仿真模型。电路主要由三相电网、三相PWM变流器、Buck/Boost变换器和蓄电池构成。三相PWM变流器控制中间电压为稳定在700 V,实现能量由电网与直流母线的双向变换;Buck/Boost变换器实现双向DC/DC功能,对电池进行恒功率充电或恒功率放电;三相PWM变流器采用电压外环、电流内环双闭环PI控制,电网电压和电容电流前馈,电感电流解耦,SVPWM空间矢量调制;Buck/Boost变换器采用PID闭环控制。Based on the three-phase voltage source converter and its control method,the overall simulation model of energy storage converter was built in MATLAB R2018a environment.The circuit is mainly composed of three-phase power grid,three-phase PWM converter,Buck/Boost converter and battery.The three-phase PWM converter controls the intermediate voltage to be stable 700 V to realize the bidirectional conversion of energy from the power grid to the DC bus;The Buck/Boost converter realizes bidirectional DC/DC function,charging or discharging the battery at constant power;Three-phase PWM converter adopts external voltage loop and internal current loop double closed-loop PI control,power grid voltage and capacitor current feedforward,inductance current decoupling,SVPWM space vector modulation;The Buck/Boost converter adopts PID closed-loop control.It effectively solves the power transmission between AC and DC subnets and reduces the current harmonics.

关 键 词：变流器 三相电网 MATLAB仿真 双向变换 

分 类 号：TM46[电气工程—电器]