三相系统电流分量与p-q功率分量的关系  

Relation Between Current Components and p-q Power Components in Three-Phase System

作　　者：张国荣[1] 齐国虎[1] 苏建徽[1] 陈林[1] 

机构地区：[1]教育部光伏系统工程研究中心(合肥工业大学),安徽省合肥市230009

出　　处：《电网技术》2010年第7期64-69,共6页Power System Technology

基　　金：国家自然科学基金资助项目(50777015;50837001);教育部科学技术研究重大项目(306004)~~

摘　　要：瞬时无功功率理论(p-q理论)是基于α-β两相坐标系而提出的,所有的功率分量也是在α-β两相坐标系中定义的,这使其理解起来比较困难。以瞬时无功功率理论为基础,给出了α-β坐标系中的各功率分量与三相系统中补偿电流的对应关系。然后对有源电力滤波器控制策略中的相关问题进行了详细的理论分析与公式推导,解决了在控制策略选择过程中遇到的理论问题。On the basis of a-b coordinate system, the instantaneous reactive power theory, i.e., the p-q theory, is proposed, so all power components in p-q coordinate system are defined in a-b coordinate system, so it makes the understanding of power components in p-q coordinate system difficult. Based on instantaneous reactive power theory, the corresponding relations between power components in a-b coordinate system and compensating currents in three-phase system are given; then detailed theoretical analysis and formula derivation of related problem in the control strategy for active power filter are carried out to solve the theoretical problem encountered in the selection of control strategy.

关 键 词：瞬时无功功率理论 功率分量 有源电力滤波器 控制策略 补偿电流 

分 类 号：TM74[电气工程—电力系统及自动化]