engleski

Fast development of a DSP-based control of three-phase four-leg inverter for auxiliary power supply converters using hardware-in-the-loop

This paper presents an easy and relatively fast way to design and implement control system of three-phase four-leg inverter in DSP (digital signal processor). The inverter model is emulated using hardware-in-the-loop simulator and control system is coded in TI DSP identical to the target system using graphically based block-diagram programming environment. A multi-loop cascade control is applied and two control strategies are implemented: i) the PI (proportional-integral) controllers with symmetrical sequence current and voltage decomposition and ii) the PIR (proportional-integral-resonant) controllers. Experimental results with symmetrical and single-phase loads are presented. The control algorithms are evaluated based on the execution time. Results show that PIR based control executes roughly three times fasted that PI control.

auxiliary power supply; carrier-based pulse-width modulation; hardware-in-the-loop; proportional-integral controller; proportional-integral-resonant controller; sequence decomposition; three-phase four-leg inverter

nije evidentirano