不同负载下变速永磁同步发电机系统稳压控制的研究  

Study on voltage regulation control for variable speed permanent magnet synchronous generator systems under different load conditions

作　　者：甘志伟 王云冲 缪冬敏[1] 沈建新[1] GAN Zhi-wei;WANG Yun-chong;MIAO Dong-min;SHEN Jian-xin(Department of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,杭州310027

出　　处：《电机与控制学报》2020年第2期72-78,共7页Electric Machines and Control

基　　金：国家自然科学基金(51577165,51377140)。

摘　　要：为了研究不同种类的负载对变速永磁同步发电机的稳压输出的影响,提出一种负载分类和建模方法。采用基于电压电流双闭环的矢量控制技术,通过PWM整流器可将PMSG输出不稳定的交流电能变换成稳定的直流电。将常见的直流侧负载视为一个独立的负载电流扰动量,可分为阶跃式和脉冲式两类,然后通过仿真和实验,分别研究了两类负载对变速PMSG系统稳压性能的影响。结果表明:直流母线电压的动稳态性能受负载电流的变化速率、稳态值和超调量等因素影响;在阶跃式和脉冲式两类负载下,变速PMSG系统在全转速范围内均能平稳运行,且具有良好的抗负载扰动能力,实现稳压输出。In order to study the influence of different types of loads on the voltage stabilization of the permanent magnet synchronous generator(PMSG),a load classification and modeling method is proposed.Using the vector control technology based on voltage and current loops,the unstable AC power output of PMSG can be converted into stable DC power by PWM rectifier.Two categories of DC loads,viz.,step-changing load and pulse load were taken as examples,and the effect of the load condition on the PMSG system was studied by simulation and experiment.The results show that the performance of DC bus voltage is affected by the change rate,steady-state value and overshoot of load current.The variable speed PMSG system can output stable DC power with different kinds of loads,and has good anti-load disturbance and voltage stabilization performance.

关 键 词：永磁同步发电机 矢量控制 变速运行 负载特性 稳压控制 

分 类 号：TM351[电气工程—电机]