Three-level pulse extension control method and three-level pulse extension device of DSPACE based on FPGA

The invention discloses a three-level pulse extension control method and a three-level pulse extension device of a DSPACE based on an FPGA, wherein the three-level pulse extension control method and the three-level pulse extension device are suitable for being applied to experiments and industries. The three-level pulse extension device is composed of an interface conversion circuit, a pulse signal extension processing unit, a power source circuit and a photovoltaic conversion circuit. A pulse wave shape of a digital pulse board card DS5101 of the DSPACE is input to the interface conversion circuit, the interface conversion circuit sends pulse signals to the pulse signal extension processing unit through matching of logic levels, and the pulse signals meeting the drive requirement are sent to the photovoltaic conversion circuit after being necessarily processed. By means of the three-level pulse extension device and the three-level pulse extension control method, extension of three-level pulse output of the DSPCE can be achieved, the inherent shortcoming that digital pulses with the duty ratio being 0 and 100% cannot be output is overcome, the application range of the DSPACE in the experiment research of three-level medium-voltage frequency converters and industries is expanded, and the application prospects are wide.