Title :
A fault tolerant digital controller for power electronic applications
Author :
Errabelli, Rammohan Rao ; Mutschler, Peter
Author_Institution :
Dept. of Power Electron. & Control of Drives, Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
In safety critical applications, fault tolerant controllers are very important. In this paper a generalized fault tolerant digital controller for power electronic applications is presented. Three fixed point digital signal processor (DSP) based controllers are used in parallel, running the same control algorithm. The PWM outputs of three DSPs are voted out to one PWM output using a simple fault tolerant majority voting logic. The fault tolerance of digital control system is verified using field oriented control (FOC) for a permanent magnet synchronous motor (PMSM).
Keywords :
PWM power convertors; digital control; digital signal processing chips; fault tolerance; machine vector control; majority logic; permanent magnet motors; power electronics; synchronous motors; DSP based controllers; PMSM; PWM output; digital control system; fault tolerant digital controller; field oriented control; fixed point digital signal processor based controllers; majority voting logic; permanent magnet synchronous motor; power converter control; power electronic applications; safety critical applications; Digital control; Digital signal processing; Digital signal processors; Fault tolerance; Power electronics; Process control; Pulse width modulation; Safety; Signal processing algorithms; Voting; Fault handling strategy; Permanent magnet motor; Reliability; Signal processing;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
