新能源电压型PWM变流器定频直接功率控制  

Fixed Frequency Direct Power Control of New Energy Voltage Type PWM Converter

作　　者：邱鹏锦 纳智敏 陈杜海 侯宗庆 QIU Peng-jin;NA Zhi-min;CHEN Du-hai;HOU Zong-qing(Yunnan Power Grid Co.,Ltd.Qujing Power Supply Bureau,Qujing 655000,China;Xi'an Jiaotong University,Xi'an 710000,China)

机构地区：[1]云南电网有限公司曲靖供电局,云南曲靖655000 [2]西安交通大学,陕西西安710000

出　　处：《电力电子技术》2025年第2期115-118,共4页Power Electronics

基　　金：云南电网有限责任公司科技项目(YNKJXM202-20070)。

摘　　要：在新能源电压型脉宽调制(PWM)变流器的控制中,空间矢量调制直接功率控制(DPC-SVM)成为研究的热点。传统DPC-SVM方法瞬时有功功率在变流器两侧的传输速度相差很大,当负载变化较大较快时,会引起直流电压产生过冲,对设备造成损害。本文对影响功率动态响应能力的因素进行了深入分析,推导了瞬时功率动态响应能力与变流器相关参数之间的关系,提出了利用动态过程中的瞬时无功功率加快能量在变流器两侧交换速度的一种控制方法。实验结果表明这种控制方法实现了快速功率响应控制,并且其稳态运行性能良好。该控制方法实现简单,具有一定的实用价值。In the control of new energy voltage type pulse width modulation(PWM)converter,direct power control ba-sed on space vector modulation(DPC-SVM)has become research hotspots.For the generic DPC-SVM method,the tra-nsmission speed of transient active power is different between the two sides of converter.When the load varies fast and hugely,it will make the DC voltage rise up and damage equipments.By analyzing the factors which influence the power dynamic response ability,the relationship between transient power dynamic response ability and the converter parameters is concluded,then a control method is put forward to accelerate the energy exchange speed on two sides of the converter by utilizing the transient reactive power during dynamic processes.Experimental results show that the proposed control method achieves fast power response control and good steady-state operating performance.This control method possesses some practical values due to its simple implement.

关 键 词：变流器 直接功率控制 空间矢量调制 动态响应 

分 类 号：TM46[电气工程—电器]