Energy efficiency optimization of single-transmit double receiving architecture MC-WPT

With the development of wireless power transmission technology, its advantages of convenience, safety and reliability have become more and more prominent. Magnetic coupling wireless power transfer has been widely used owing to its high-efficiency energy transfer advantages in the near-field area. However, its traditional single point-to-point application no longer meets the needs of modern social development. Due to the popularity of electronic devices and the development of electrical appliances in various industries, it is a major trend in the development of wireless power transmission to supply power to multiple devices at the same time. Aiming at the general series compensation topology type single transmitter and double receiver MC-WPT (Magnetic Coupling Wireless Power Transfer, referred to as MC-WPT) system, this paper proposes a method that uses equivalent matching negative impedance to make the coil current the same phase, and on this basis, controllable optimization of power and efficiency can be achieved.