Parameter setting method of constant current output of bilateral lc type electric field coupled wpt system
An electric field coupling, constant current output technology, applied in the output power conversion device, DC power input conversion to DC power output, circuit devices and other directions, can solve the problem of reducing the reactive power of the coupling mechanism, excessive voltage stress, and the coupling mechanism. problems such as large voltage stress, to achieve the effect of improving transmission power level, small voltage stress and reducing cost
Active Publication Date: 2020-05-08
SOUTHEAST UNIV
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[0006] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, and provide a parameter setting method for the constant current output of the bilateral LC type electric field coupled WPT system, which balances the original , The voltage stress of the secondary side compensation network reduces the reactive power of the coupling mechanism, which solves the problem of the large voltage stress of the coupling mechanism of the existing bilateral LC type compensation network and the excessive voltage stress borne by a certain component in the original secondary side compensation network big technical problem
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[0022] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.
[0023] Bilateral LC type electric field coupled WPT system includes: high frequency full bridge inverter circuit 1, including primary side compensation inductor L 1 and the primary side compensation capacitor C ex1 The primary side LC compensation network 2, the coupling capacitor plate including two emitter plates and two receiving plates 3, including the secondary side compensation inductance L 2 and the secondary side compensation capacitor C ex2 The secondary side LC compensation network 4, the full bridge rectification filter circuit 5. Primary side compensation inductance L 1 One end of the high-frequency full-bridge inverter circuit and the first power tube Q 1 , the third power tube Q 3 The midpoint A of the formed bridge arm is connected, and the primary compensation inductance L 1 The other end of the primary side compensation capaci...
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The present invention discloses a parameter setting method of the bilateral LC type electric field coupling type WPT system constant current output, and belongs to the WPT technology field. A system comprises a high-frequency full-bridge inverter circuit, a primary side LC compensation network containing a primary side compensation inductor and a primary side compensation capacitor, a coupling capacitance plate containing two emission polar plates and two reception polar plates, a secondary side LC compensation network containing a secondary side compensation inductor and a secondary side compensation capacitor and a full-bridge rectifying and filtering circuit. The parameter setting method, under the premise of guaranteeing a constant current needed by a load, adjusts the parameters of the primary side and secondary side compensation networks to balance the voltage stresses of the primary side and secondary side compensation networks, so that the system outputs the constant current needed by the load, and the circuit zero approximation reactive circulation and the soft on-off of the switch devices are realized, the own reactive power of the coupling capacitance plate is lowest, the efficiency and the reliability of a WPT system are improved, the cost is reduced, and the transmission power grade is improved.
Description
technical field [0001] The invention discloses a parameter setting method for constant current output of a bilateral LC type electric field coupled WPT system, belongs to the technical field of wireless energy transmission, and is suitable for applications requiring constant current output such as LED power supply and battery charging. Background technique [0002] At present, domestic research hotspots on wireless power transmission (WPT, Wireless Power Transmission) technology mainly focus on the magnetic field coupling method. The electric field coupling uses high-frequency electric field as the energy carrier. When the high-frequency alternating current acts on the emitter plate, an interactive electric field is formed between the emitter plate and the receiver plate to generate a displacement current, which realizes the The energy transmission has the advantages of being able to pass through the metal isolation layer, low electromagnetic radiation, and small size. [0...
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IPC IPC(8): H02M3/335H02J50/05
CPCH02J50/05H02M3/33569
Inventor 曲小慧连静
Owner SOUTHEAST UNIV