FPGA implementation of SVPWM approximation

The PWM signal generator is a key element in DC-AC conversion and AC drives. A new scheme based on the approximation of Space Vector Pulse Width Modulation is proposed to minimize the mathematical complexity involved with the SVPWM, while retaining its advantages. The proposition has been implemented on FPGA using Hardware Description Language VHDL and its co-simulation with Simulink™/Matlab®. The new implementation consumes about 30% of the resources of the conventional method for synthesis using ISE Xilinx Design software on a Spartan3 Platform.