Power electronic transformer control circuit, device and control method

• Main Authors: FAN YE, WANG JING, HE MING, LIAO YUKAI, YANG XINGCHI, HOU TIANZHAO, CHAI ERLIANG
• Format: Patent
• Language: Chinese; English
• Published: 06.05.2022
• 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 relates to a power electronic transformer control circuit, which comprises a sampling circuit, a load detection circuit and a main control circuit, and is characterized in that the sampling circuit is used for collecting circuit parameters, and the circuit parameters comprise a real-time voltage value and a real-time current value; the load detection circuit is connected with the sampling circuit and is used for generating a load calculation value according to the real-time voltage value and the output voltage reference value; and the main control circuit is connected with the sampling circuit and the load detection circuit, and is used for generating a phase shift angle control signal according to the real-time current value, the load calculation value and the phase shift angle reference value so as to control the power electronic transformer to output a voltage value within a preset range. According to the power electronic transformer control circuit, the slope change value of the load curve i