| Abstract |
A high performance low cost chip set was developed for the control of AC servo drives. It consists of a digital chip with a dual processor and an analog subsystem for A/D conversion. The digital chip includes a custom signal processor for the high speed control
loops, custom peripheral functions for PWM generation and sensor evaluation and an extra high speed microcontroller, which is free for process control tasks, communication, diagnoses and user interface. Both processors are freely programmable, allowing use of the chip set in various applications from high performance servo drives for synchronous and asynchronous motors over sensorless control schemes for AC motors to PWM controlled rectifiers to achieve sinusoïdal line currents. This paper shows the different applications
and gives details about the calculation times for various software building blocks for digital control. The chip set was developed for a group of 40 European drive manufactures
within a joint development project. |
