International Association of Computer Science and Information Technology Press (IACSIT)
Abstract
The Space Vector Pulse Width Modulation (SVPWM) is possibly the best among all the PWM techniques for variable frequency drive applications. Unfortunately, the
modulation algorithm is mainly implemented with software
based on microcontroller or digital signal processors (DSP).
These are software-based technique purely and obviously not
an ideal solution. Employing Field Programmable Gate Array
(FPGA) to realize SVPWM strategies provides advantages that
it is considered as an appropriate solution to boost system
performance of an SVPWM algorithm. Moreover, although in
the literatures the implementation for three-phase SVPWM
based on FPGA is not lacking, however all these designs are
based on the conventional SVPWM without considering
hardware-resource saving and not simple. This paper present a simple realization of 5-segment discontinuous SVPWM with a
difference approach based on FPGA, in which the judging of
sectors and the calculation of the firing time to generate the SVPWM waveform is simple, and also the switching losses is low. The proposed discontinuous SVPWM has been designed
and successfully implemented by using APEX20KE Altera
FPGA considering hardware-resource saving and has successfully driven a three phase inverter system with
induction machine 1.5 kW as load