New control of two three-phase induction machines using an integrated inverter for applications in hybrid electric vehicles

An electric drive system consisting of two three — phase induction motors independently controlled by an integrated dual inverter is modeled and simulated in Matlab/Simulink. The introduced topology can be used in an electrical vehicle where the main machine is used as a traction drive and the auxiliary machine can be used for air conditioning purposes. While the traction motor is driven by three legs of the used inverter, the auxiliary motor requires only two legs in the introduced topology. This is achieved by connecting a phase of the auxiliary motor to the neutral point of the traction motor. Closed loop control is carried out under different conditions including trapezoidal speed profile tracking and steady — state performance with load variation.