摘要
通过功率变换器的数学模型,分析了现行直接功率控制(DPC)系统的原理。传统DPC系统功率内环采用一个开关表同时控制瞬时有功功率和无功功率,开关表的设计决定了系统的动、静态性能,为了满足不同的控制要求,文章详细分析了开关表的设计方法,通过对传统开关表的改进,克服了传统开关表的缺点,获得了良好的功率控制效果。仿真结果验证了新开关表设计方法的有效性。
The principle and properties of the direct power control（ DPC） system for present three phase PWM rectifiers has been analyzed in this paper through the mathematical model. Switching table in power loop of traditional DPC system controls active power and reactive power instantaneously. Thus the system dynamic and static performance mainly depends on the design of the switching table. In order to meet different control requirements,the switching table design methods are analyzed in detail,and an improved switching table is designed to overcome the shortcomings of the traditional ways,which will obtain good power control effect. Simulation results verify the novel switching table design method.
出处
《电测与仪表》
北大核心
2014年第9期92-96,共5页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(51207086)
上海市教育委员会科研创新项目(14YZ126)
上海高校青年教师培养资助计划(sdl12004)
