摘要
针对电压型PWM整流器无源控制器设计中恒阻尼注入方法存在阻尼注入太小,导致启动变慢,稳态误差大,输出直流电压稳定性能变差;而阻尼注入过大,则导致输入电流总谐波畸变率(THD)值较大等问题,提出了变阻尼注入的无源控制策略,变阻尼注入采用跟踪微分器予以实现。通过选择合适的跟踪微分器非线性函数及其参数,可使阻尼按照期望值变化,使整流器的动静态性能进一步提高。仿真实验表明基于变阻尼的电压型PWM整流器无源控制策略是可行的。
In the design of voltage-source PWM rectifiers control,when as the value of damper injection is too small, it induces the startup slow, static error increased, and the stable performance of the out-put DC voltage worse;if the value is too big,it induces input current THD greater. Aiming at these problems, a method of variable-damper injection is proposed, using tracking-differentiator to realize variabledamper injection. By selecting appropriate non-linear function and parameters, the dampers vary in term of expectation that improves the static and dynamic performances of rectifier. The passivity-based control method of voltage-source PWM rectifiers based on variable-damper was proved feasible by simulation test.
出处
《北京信息科技大学学报（自然科学版）》
2009年第4期30-34,共5页
Journal of Beijing Information Science and Technology University
基金
北京市教育委员会科技计划重点项目
北京市自然科学基金重点项目(KZ200710772015)
关键词
PWM整流器
无源控制
跟踪微分器
变阻尼
PWM rectifiers
passivity-based control
tracking-differentiator
variable-damper
