FPGA implementation of simplified AMTC-PWM algorithm for a single phase voltage source inverter

The amplitude modulated triangular carrier pulse width modulation method (AMTCPWM) is a natural sampled PWM method which can extend the linearity of the sinusoidal PWM (SPWM) to full range of the pulse dropping region and increase the dynamic range of the SPWM control. Thus it eliminates the need of overmodulation in the pulse dropping region to reach the square wave boundary. Any submission in the PWM theory with a specific performance target is mandatorily requires either a reference or a carrier modification. The limitation of such submissions is allied mainly with their digital implementation and accurate imitation of the theory. This paper presents a reprogrammable architecture to implement the AMTCPWM with perfect reproduction capability. The architecture is simulated using Modelsim6.3 and implemented using Spartan 6 family device LX45 and Xilinx 13.2i.