Dynamic Performance Improvement Control of Brushless Dual-electrical-port Dual-mechanical-port Machine with Integrated Winding

Brushless dual-electrical-port dual-mechanical-port (BLDD) machine has become a promising electric continuously variable transmission (ECVT) solution that replaces conventional mechanical contact transmission. However, the conventional vector control of the BLDD machine only has the outer rotor speed loop, which limits the dynamic performance of the drive shaft when the torque of the two mechanical ports changes. In this paper, a dynamic performance improvement control strategy of the BLDD motor with integrated winding, which compensates for the load changing effects of inner and outer rotor, is proposed to enhance the dynamic performance of the drive shaft. First, the mathematical modeling of the proposed motor is carried out, and the decoupling algorithm of magnetic field current and physical winding current is established. Then, the dynamic performance improvement control strategy of the proposed motor is studied when torque changes at two mechanical ports. Finally, the effectiveness of the proposed method is verified by experiments on the prototype platform.