Research on predictive flux control for ship propulsion motor
To solve the problem of rectification and optimization of weight coefficients involved in the conventional predictive control of ship propulsion motors and the problem of propulsion motors without speed sensors under predictive control,the use of adaptive predictive flux control is proposed.Firstly,the control performance and principle of predictive torque control are analyzed,and the change of the control method to control the flux and torque is transformed into the con-trol of the equivalent stator flux,thus forming the predictive flux control;at the same time,the adaptive control algorithm is introduced to realize the speed sensor-free control of the motor;finally,a simulation comparison study between the tradition-al control method and the adaptive predictive flux control of the propulsion motor is conducted.The predictive flux control can successfully eliminate the rectification work on the weighting coefficients and their effects,and has good starting per-formance,reduced harmonic components,reduced flux and torque pulsation.At the same time,the adaptive control al-gorithm has a high accuracy of speed observation for all operating conditions.The adaptive predictive flux control has excel-lent control effect on asynchronous motor and has good steady-state characteristics and robustness,which can improve the control performance of ship propulsion motor.
predictive controladaptive algorithmship propulsion motor
万方数据
维普
