CAJ | 학술논문

针对变流器脉宽调制(pulse-width modulation，PWM)，基于虚拟磁链的模型预测，提出一种新型脉宽调制算法(novel algorithm of pulse-width modulation，NPWM)。建立由正弦调制电压和变流器输出电压构成的虚拟磁链模型，以磁链误差最小为优化目标建立价值函数，采用模型预测获取最优目标电压矢量。基于单一目标预测方法，提出一种多目标预测方案，确保在磁链误差范围一定的前提下降低器件平均开关频率，依据建立的价值函数分析算法流程。仿真和实验比较两种预测算法下NPWM调制和空间矢量脉宽调制的控制效果，验证两种预测方法下NPWM算法的有效性。
침대변류기맥관조제(pulse-width modulation，PWM)，기우허의자련적모형예측，제출일충신형맥관조제산법(novel algorithm of pulse-width modulation，NPWM)。건립유정현조제전압화변류기수출전압구성적허의자련모형，이자련오차최소위우화목표건립개치함수，채용모형예측획취최우목표전압시량。기우단일목표예측방법，제출일충다목표예측방안，학보재자련오차범위일정적전제하강저기건평균개관빈솔，의거건립적개치함수분석산법류정。방진화실험비교량충예측산법하NPWM조제화공간시량맥관조제적공제효과，험증량충예측방법하NPWM산법적유효성。
In allusion to pulse-width modulation (PWM), a novel algorithm of pulse width modulation (NPWM) was proposed based on virtual flux model prediction. The virtual flux models consisting of sinusoidal modulation voltage and converter output voltage were established. The cost function was built aiming at making the flux error minimum. And the optimal objective voltage vector was obtained by using model prediction. On the basis of single target predictive method, a type of multi-target predictive method was put forward whi’ch ensures that the device’s average switching frequency was reduced under the premise of certain range of flux errors . The algorithm flow was analyzed according to the established cost function. The control effect of NPWM and space vector pulse width modulation was compared by simulations and experiments, which verifies the effectiveness of NPWM in the two predictive methods.