A flexible virtual system for real time simulation and evaluation of motor drives

This paper presents and implements a flexible virtual system for motor drive real time simulation and evaluation, which is based on a Hewlett-Packard testing machine. The system consists of a personal computer with A/D and D/A converters and a visual development environment that combines the convenience of direct hardware access and power of visualized software programming. With this system, various motor drive configurations can be flexibly simulated, tested and evaluated at real time, and also control signal can be fed back to real drive system. The simulation results show that it is possible to run a virtual motor drive with hardware in loop as a real one at real time.