Rapid Prototyping of High Performance FPGA Controller for an Induction Motor Drive

This paper describes rapid development technique of prototype non-volatile FPGA space vector pulse width modulated digital controller for a 3-level inverter. Control algorithm is first realized using simulink blocks of matlab. HDL coder converts simulink model to fine and synthesizable hardware description language. Bit stream corresponding to the code executed to flash memory of FPGA. The developed prototype FPGA digital controller is validated on a 3-level inverter that drives three-phase induction motor. The scheme is also verified with the DSP processor based dSPACE controller and compared its performance with that of developed controller. Excellent harmonic performance with very low total harmonic distortion and high spectral purity is observed for developed controller. This development technique enables engineers to construct, simulate and build advanced schemes within small duration of time.