Dual virtual vector duty cycle model predicts power control of dual three-phase permanent magnet generator

The large vector model for predicting power control (MPPC) of a traditional two-three-phase permanent magnet synchronous generator is used to solve the problems of high current harmonics, sharp power pulsation, and unstable phase current. A dual virtual vector duty cycle model is proposed to predict power control. This method obtains 12 virtual voltage vectors by selecting the two vectors of the outermost and secondary outer layers of the rectifier, and then directly introduces the 12 virtual voltage vectors into the power value function for iterating, and then obtains an optimal virtual vector that minimizes the value function. The two vectors adjacent to the optimal vector are brought into the value function, and the suboptimal vector that makes the value function smaller is selected. Finally, the duty cycle modulation is carried out together with the zero vector, and the function of each vector is calculated by using the idea of no beat. The experimental results show that the double virtual vector duty cycle MPPC can effectively reduce current harmonics, reduce current and power pulsation, and improve current stability.