CAJ | 학술논문

为了使逆变器的开关频率得到最优利用，实现永磁同步电机高性能控制，建立了基于预测控制的新型直接转矩控制。在分析系统的混杂特性的基础上，利用普通直接转矩驱动系统自身运行特点推导出适合预测控制系统的低复杂度离散混杂模型。通过设计包括逆变器控制目标和电机控制目标的预测控制器目标函数，使逆变器平均开关频率最低的同时电机输出在给定的滞环范围内。对两电平电压型逆变器直接转矩控制系统进行仿真，结果表明所设计控制方案比普通方案开关频率降低了20％，转矩脉动降低了12?5％。
위료사역변기적개관빈솔득도최우이용，실현영자동보전궤고성능공제，건립료기우예측공제적신형직접전구공제。재분석계통적혼잡특성적기출상，이용보통직접전구구동계통자신운행특점추도출괄합예측공제계통적저복잡도리산혼잡모형。통과설계포괄역변기공제목표화전궤공제목표적예측공제기목표함수，사역변기평균개관빈솔최저적동시전궤수출재급정적체배범위내。대량전평전압형역변기직접전구공제계통진행방진，결과표명소설계공제방안비보통방안개관빈솔강저료20％，전구맥동강저료12?5％。
This paper develops a high performance direct torque controller for a Permanent Magnet Synchronous Motor ( PMSM) drive. The model predictive control has been used in direct torque control PMSM drive for mak ing the best use of inverter switching frequency. The discrete-time hybrid model of PMSM drive using direct torque con-trol was derived based on analyzing the drive′s hybrid features. A new cost function is chosen for keeping output within limits while minimizing the average inverter switching frequency. Simulation results of the PMSM drive system based on a two-level voltage source inverter and their analysis indicate preliminarily that such an scheme compared with the standard direct torque control one, is capable of reducing the switching frequency and the torque ripple by 20% and 12.5% respectively.