基于矢量控制的永磁同步发电机电磁转矩控制方法优化  

Optimization of PMSG Electromagnetic Torque Control Method base on Vector Control

作　　者：王正[1] 尹泽成[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《能源研究与管理》2012年第4期41-44,共4页Energy Research and Management

基　　金：工业余热发电系统关键技术研发(F10-049-2-00)

摘　　要：当永磁同步发电机应用在发电系统中,会遇到诸多问题。首先其转子磁场存在不可控制性,其次当发电机端电压过大超过传统变流器直流母线电压时会引起变流失败,再次永磁发电机输出电流流向难以直接控制等问题。为解决上述问题,提出了在永磁同步发电机三相出线端串接感性电抗器,通过控制电抗器上的电压幅值和相位间接控制三相出线端电流的控制策略,从而可以有效的解决上述问题。根据余热发电系统的要求,结合永磁同步电机的矢量控制技术,搭建了永磁同步发电机电磁转矩控制的仿真平台。仿真结果验证了设计方案能够合理与有效的控制永磁同步发电机电磁转矩。There exist several problems when the permanent magnet synchronous generator （PMSG） used in the power generation system. First, rotor magnetic fields of generator can not be controlled. Next, it will cause the failure of the inverter when the terminal voltage of generator is larger than the inverter DC bus voltage. Once more the flow direction of the output current from PMSG is hardly controlled directly. To solve the problems above, the inductive reactors need to connect with the three-phase terminal side of PMSG in series by applying three-phase current control strategy which is to control the amplitude and phase of the voltage on the reactor indirectly. According to the requirements of the waste heat recovery power generation system, combining the PMSM vector control technology, a simulation platform is build. The simulation results demonstrate the feasibility and effectiveness of the proposed design.

关 键 词：永磁同步发电机 空间矢量脉宽调制 余热发电 感性电抗器 

分 类 号：TB657[一般工业技术—制冷工程]