A Three-level active neutral-point-clamped converter based on DSP and CPLD

Three-level active neutral-point-clamped converter topology makes the loss distribution between power semiconductors possible, which limit the further development of now widely used Three-level converter. To implement the strategy in controller, this paper proposed a controller consist DSP and CPLD, in which DSP can run the main strategy with its high calculation speed and CPLD can give an expansion to I/O ports limited DSP. An platform is manufactured to verify the method with experiment, and the experiment result is compared with simulation result.