摘要
为了模拟逆变器供电变频调速永磁同步电机铁耗和永磁体损耗的精确计算,采用非线性电感参数电机模型与矢量控制技术构建电机系统性能仿真平台,开展基于SVPWM矢量控制的高密度永磁同步电机损耗相关技术研究。以48槽8极高密度永磁同步电机为例,研究逆变器供电变频调速永磁同步电机电流时间谐波对铁耗和永磁体损耗的影响,仿真分析逆变器参数与定子电流畸变率之间的关系。仿真分析表明,电流时间谐波是产生永磁体涡流损耗的主要因素;电流时间谐波对铁心涡流损耗影响大,对铁心磁滞损耗影响小;在一定的范围内,当载波比和调制比增大时,电流畸变率减小,铁耗和永磁体涡流损耗也随之减小。与正弦波供电方式相比,用逆变器供电仿真计算得到的铁耗和永磁体损耗值更接近样机实验数据,进一步验证了仿真分析方法的准确性。
In order to simulate the precise calculation of iron loss and magnet eddy loss based on inverter variable speed permanent magnet synchronous motor,the nonlinear inductance parameters and vector control technology were adopted to build performance simulation platform for motor system,and the loss technology of high density permanent magnet synchronous motor based on SVPWM vector control was researched. A 48-slot 8-pole high density permanent magnet synchronous motor was taken as an example to study the influence of inverter current time harmonic on iron loss and magnet eddy loss of the motor,simulation was carried out on the relationship between inverter parameters and stator current distortion rate. Simulation analysis showed that： current time harmonic was the main factor to generate eddy current loss of permanent magnet; the current time harmonic had large influence on iron core eddy current loss,and small effect on the iron core hysteresis loss; in a certain range when carrier and modulation ratio increased,the current distortion rate decreased with the reduction of the iron loss and permanent magnet eddy current loss. Compared with the sine wave power supply,loss calculated by the inverter power supply simulation was more close to the experimental data of the prototype,which further verified the accuracy of the simulation analysis method.
作者
何彪
张琪
陈世军
黄苏融
HE Biao;ZHANG Qi;CHEN Shi-jun;HUANG Su-rong(Shanghai University,Shanghai 200072,Chin)
出处
《微特电机》
2018年第5期35-38,共4页
Small & Special Electrical Machines
基金
上海市产学研合作年度计划项目(沪CXY-2015-014)
关键词
永磁同步电机
SVPWM
非线性电感参数
电流时间谐波
损耗
permanent magnet synchronous motor
SVPWM
nonlinear inductance parameters
current time harmon-ic
loss
