输出电流不参与控制的三相逆变器无线并联  

Wireless Parallel Control Without Output Current Sensing for Three-phase Inverter

作　　者：尹艺迪[1] 马皓[1] 林钊[1] 李婷[1] 

机构地区：[1]浙江大学,电气工程学院,浙江杭州310027

出　　处：《电力电子技术》2013年第4期8-10,共3页Power Electronics

基　　金：浙江省重点科技创新团队项目(2010R50021)~~

摘　　要：传统逆变器无互联线并联系统大都采用电压电流双闭环控制算法进行单机控制,再通过采集到的输出电压和电流计算输出有功和无功功率,进行不同的下垂控制。提出一种全新的并联控制方法,可在不采集输出电流的情况下实现逆变器无互联线并联。理论分析表明,通过输入功率对逆变器频率和幅值进行瞬时功率下垂控制,能达到均流效果;通过检测输入电压和电流信号来计算输入功率的算法较简便;逆变器单机采用电压单环进行控制,使整个系统无需任何形式的输出电流参与控制,也减少了系统对信号采集的需要,提高了系统可靠性。通过两台实验样机验证了方案的有效性,实验结果的稳态与动态性能良好。On conventional droop control scheme, the output active and reactive power of inverters need to be calculated by the information collected by the output voltage and current sensor.This paper proposes a simple control strategy of wireless parallel operation for three-phase inverter, which can work without the use of output current.The input power which can be simply calculated by input voltage and input current is the only information used in droop control.Each inverter works in voltage single-loop control, thus, no output current sensor is needed in the whole system which can be helpful to the reliability.In order to show the performance of the system,two parallelled-connected three-phase inverters are built and tested.Experimental results are presented to prove the validity of the proposed control scheme.

关 键 词：逆变器 并联 无互联线 输入功率下垂 

分 类 号：TM464[电气工程—电器]