Electric automobile bidirectional wireless charging control method based on LCL resonance compensation

• Main Authors: HE XIFENG, ZHANG SHAOQUAN, DENG CHANGJIAN, XIE XIAONA, ZHANG JIANGLIN, ZHUANG HUIMIN, LIU XINGMAO
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses an electric automobile bidirectional wireless charging control method based on LCL resonance compensation, and particularly relates to the technical field of wireless charging.The control method comprises the specific steps that S1, a mathematical model and a control framework of an LCL-BWPT system are established, wherein high-frequency converters on the primary side andthe secondary side both adopt a fully-controlled H bridge, a power controller is arranged on the secondary side, control parameters are calculated according to the battery state, the electricity priceand the willingness of a vehicle owner provided by a BMS battery energy management system, and adjustment and control parameters alpha required by the primary side are transmitted to the primary sidethrough wireless communication; and S2, the control scheme consists of two modules, wherein setting of charge/discharge power and design of control parameters are carried out. The LCL-BWPT system isthe object of study. From the