摘要
介绍了一种基于三相PWM电压源变换器(PWMVSC)的能量回馈式蓄电池恒流放电装置。建立了PWMVSC在同步旋转坐标系下的复数矢量传递函数模型,设计了交流电流复数PI控制器,并基于功率平衡关系建立了放电电流的数学模型,提出了系统的控制方案。实验结果表明装置能够实现蓄电池的高精度恒流放电,而且交流侧电流波形好,功率因数高。
This paper introdues a kind of capacity feed back storage battery constant current discharging device based on three-phase PWM converter, and modeling of three-phase PWM VSC using complex transfer functions in synchronous rotating frame is introduced. Design and analysis of current controller for PWM VSC is presented using the complex vector notation model. Based on the power balance concept, mathematic model of discharging current is set up, and the control scheme is suggested. Lastly experimental results validate the performance of the device.
出处
《通信电源技术》
2004年第4期25-27,30,共4页
Telecom Power Technology
关键词
蓄电池放电
复数PI
电流模型
storage battery discharging
complex PI controller
model of discharging current
