CAJ | 학술논문

提出一种采用优化脉宽调制(pulse width modulation， PWM)的模型预测磁链轨迹跟踪控制方法，不需要实时估计定子磁链和电压的基波分量，实现了异步电机低开关频率下的优化PWM高性能闭环控制。通过将控制问题构造为一个带边界线性约束的二次目标函数型最优化问题，即二次规划(quadratic programming，QP)问题，采用有效集法实现其数值求解，将模型预测滚动优化策略结合到磁链轨迹跟踪控制器，在尽可能小地修正优化PWM开关角的同时消除跟踪磁链偏差，实现基于优化PWM的磁链轨迹跟踪控制。所提出的新型闭环控制系统在低开关频率下基于优化 PWM 获得较小的谐波畸变，同时通过磁链轨迹跟踪获得快速的动态响应。针对4kW小功率和1.6MW大功率的异步电机驱动系统的仿真结果表明，两组驱动系统获得的动静态性能相一致，充分验证了所提控制方案的有效性。
제출일충채용우화맥관조제(pulse width modulation， PWM)적모형예측자련궤적근종공제방법，불수요실시고계정자자련화전압적기파분량，실현료이보전궤저개관빈솔하적우화PWM고성능폐배공제。통과장공제문제구조위일개대변계선성약속적이차목표함수형최우화문제，즉이차규화(quadratic programming，QP)문제，채용유효집법실현기수치구해，장모형예측곤동우화책략결합도자련궤적근종공제기，재진가능소지수정우화PWM개관각적동시소제근종자련편차，실현기우우화PWM적자련궤적근종공제。소제출적신형폐배공제계통재저개관빈솔하기우우화 PWM 획득교소적해파기변，동시통과자련궤적근종획득쾌속적동태향응。침대4kW소공솔화1.6MW대공솔적이보전궤구동계통적방진결과표명，량조구동계통획득적동정태성능상일치，충분험증료소제공제방안적유효성。
A novel high performance close-looped model predictive stator flux trajectory tracking control scheme was proposed, which is desired to realize close-looped control of optimal PWM without the need of estimating the fundamental component of the stator flux or voltage in real time. The control problem was formulated to a quadratic objective function optimal control problem with the boundary linear constraints, i.e. the quadratic programming (QP) problem. The QP problem was solved by active set methods, thus model predictive stator flux trajectory tracking controller was designed with a receding horizon policy to perform a minimum possible modification of the offline calculated PWM. The proposed novel close-looped control system show benefit, such as lower current total harmonic distortion and fast dynamic response at low switching frequency, according to the optimal PWM patterns and stators flux trajectory tracking. Simulation results obtained from 4kW and 1.6MW three-level inverter AC drives are presented, which demonstrate that the steady and dynamic performance of those two driving systems is consistent, and the proposed control scheme is feasible.