| Abstract |
This paper deals with the generator operation of a switched reluctance drive for an electric vehicle (EV) application. In EV applications, operation in generating mode over a wide torque-speed range, i.e., in chopping mode as well as in single-pulse operation, is required. In addition, the DC-link voltage is specified for a wide operating range which leads to stringent control requirements the switched reluctance drive. In this paper, a novel control strategy to implement a three-level hysteresis current control in generating mode is presented. Improved drivve efficiency was obtained with this technique. The sets of parameters, which are necessary for the control of a switched reluctance drive, and the resulting efficiency characteristics are presented. In single pulse mode with a high back EMF uncontrollable overcurrents during generating mode can occur. To protect the drive against this chatacteristic behavior and the resulting uncontrolable torque pulsation, suitable control strategies are presented. |
