抄録
A new speed control system is described in which a microprocessor is used to regulate the speed of a DC shunt motor. A distinct feature of this speed regulating control circuit is to achieve an optimum efficiency of the DC drive comprising the power electronic converter, DC motor and control circuitis. A microprocessor based controller is developed, which suitably controls both the armature and the field currents of the DC motor with a view to minimizing the total system losses and achieving at the same time, the required load torque.
An experimental DC drive incorporating the microprocessor-based speed regulator was tested on a 15kW DC shunt motor. It was found that a high efficiency speed control was obtained both at transient and steady state operations.
