Digital computer simulation of variable-speed PWM inverter-machine drives

It is predicted that, with the increasing availability of digital computing facilities, computer-aided design will play an increasingly important and cost-effective role in the design of variable-speed drives (VSD). The paper describes the detailed development of an extremely versatile PWM VSD package which has the potential for investigating a wide range of operational modes. The capabilities of the package are demonstrated, using a number of examples of typical operational modes of PWM inverter-machnine systems, which serve to highlight the potential use of the package. The validity and accuracy of the computer simulations are confirmed, using experimental results obtained from a microprocessor-controlled PWM inverter -drive system.