Novel non-resonant CPT system based on Zeta circuit

Abstract

The invention discloses a novel non-resonant CPT system based on a Zeta circuit, and the system comprises a DC power supply DC, a switch S1, a coupling capacitor C1, a resistor Rs, a compensation inductor L1, a coupling capacitor C2, an integrated diode, a voltage stabilization capacitor C3, and a load resistor RL. The positive and negative ends of the DC power supply DC are connected with the switch S1 and the coupling capacitor C1 respectively. The positive end and the negative end of the switch S1 are connected with the coupling capacitor C1 and the direct-current power supply DC respectively. The system only comprises a controllable semiconductor switching device. Secondly, resonance type compensation topologies with relatively complex structures are designed on the two sides of a coupling mechanism of a traditional resonance type CPT system, and only a compensation inductor is designed on the left side of a capacitance coupling mechanism of the system; and thirdly, a traditional non-resonant CPT system is usually formed by transforming a direct current chopper circuit, and in order to realize CCM (continuous current mode) mode output, the system comprises one or more inductors with relatively large numerical values, but the system only comprises one inductor with relatively small numerical values.

Description

technical field [0001] The present invention relates to the technical field of CPT systems, and more particularly, the present invention relates to a novel non-resonant CPT system based on Zeta circuit. Background technique [0002] In recent years, with the increasing maturity of power electronic technology, wireless power transmission technology has gradually been widely studied and applied at home and abroad, bringing a revolutionary progress to the transmission method of electric energy. Wireless power transmission technology can use the invisible soft medium of space. (such as magnetic field, electric field, laser, microwave, etc.) to realize the transfer of electric energy from the energy transmitting end to the energy pickup end in the form of no direct electrical connection. According to different transmission mechanisms, wireless energy transmission is mainly divided into wireless energy transmission based on magnetic field coupling ( IPT) and wireless power transmi...

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Problems solved by technology

[0004] The disadvantages of the above documents: 1. The structure is complex. The system adopts a resonant compensation topology, which makes the system structure too complicated. 2. The anti-offset performance is poor. When the system emitter plate and the receiver plate are relatively offset, The transmission power and transmission efficiency of the system will be greatly reduced. 3. The volume of the system is relatively heavy. The resonant inductance element and the transmitting and receiving coils of the system are large and not easy to integrate. In addition, the system uses a full-bridge inverter Transformers, there are many semiconductor switching devices

[0005] From the above content, we can get: 1. There is a problem that the system structure is too complex caused by the resonance compensation topology in the system; 2. There is a problem that the system is too bulky caused by the resonance compensation topology in the system; The problem of system transmission power and transmission efficiency reduction caused by shifting

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