Network construction type multi-fractional order virtual synchronous machine control method

• Main Authors: LI JUNWANG, SHI RONGLIANG, ZHOU LUJING, LU DONGPING, ISHIBUCHI AI, WANG YAXUAN
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• 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; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a network construction type multi-fractional order virtual synchronous machine control method, and the method enables an integer order virtual inertia link in a conventional network construction type virtual synchronous machine control algorithm to be changed into a multi-fractional order virtual inertia link. The damping characteristic and the output active power dynamic response performance of the network construction type multi-fractional order virtual synchronous machine are improved; the problems of output active dynamic oscillation, slow dynamic response speed, power overshoot and the like easily occurring in the process of providing certain voltage and frequency support for an accessed power grid, a micro-grid and other power systems by a traditional network-forming virtual synchronous machine can be solved. The method has the advantages of lower order of a control system, more flexible control degree of freedom, larger adjustable range of control parameters and the like, and ca