Reconfigurable three-phase SPWM implementation on DE2 FPGA

The purpose of this paper is to design and implement a modified strategy in traditional three phase SPWM technique based on Cyclone II ALTERA FPGA to be used for variable voltage and frequency AC supplies with high resolution to cover a required range of v and f, with customizable SPWM characteristics such as modulation index, carrier frequency, modulating signal frequency and delay time (dead-time). The design entry is achieved using Quartus II software through schematic and VHDL description language tools. By using the Altera DE2 development and education board the proposed architecture has been implemented and tested. Behavioural simulation and experiment results are successfully achieved showing that the proposed SPWM signal generation strategy works properly and can reduce the usage of logic elements (LE).

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W artykule opisano implementację zmodyfikowanej techniki modulacji sinusoidalnej PWM dla trójfazowych zasilaczy AC o regulowanym napięciu i częstotliwości. W badaniach wykorzystano platformę DE2 z układem FPGA Cyclone II firmy Altera. Wyniki symulacyjne i eksperymentalne potwierdzają skuteczność działania i redukcję wykorzystania zasobów układu.