ANPC three-level control method

• Main Authors: LING YUN, LIU QIANG, JIANG GUOZHENG, XIONG ZHENZHONG, LIN YUNSONG, TANG JIZE, ZHANG CHUAN
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention discloses an ANPC three-level control method, and relates to the technical field of three-level control, and the method comprises the following steps: obtaining a sampling signal and a triangular carrier signal, carrying out the analog-to-digital conversion of the sampling signal, and obtaining a digital sampling signal; performing clark transformation, normalization processing and gh coordinate transformation on the digital sampling signal in sequence to obtain a reference voltage vector; sequentially calculating a basic vector of the reference voltage vector, action time of the basic vector and switching time of an upper tube and a lower tube in each phase of bridge arm, and comparing a switching time signal with the triangular carrier signal to obtain a switching state signal of each switching tube in each phase of bridge arm; inserting a dead zone in the switch state signal to obtain a switch control signal; the output values of the ANPC three levels are controlled according to the switch co