Wireless electric energy transmission system compensation topological structure

A technology of wireless power transmission and compensation topology, which is applied in the direction of control/regulation systems, electrical components, circuit devices, etc., can solve the problems of high system cost, low power density, and large number of compensation components, and achieve enhanced flexibility and power density Effect of improving and reducing system cost

Inactive Publication Date: 2017-03-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a compensation topology of the wireless power transmission system in order to solve the problems of a large number of compensation devices, high system cost and low power density in the existing wireless power transmission system

Method used

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  • Wireless electric energy transmission system compensation topological structure
  • Wireless electric energy transmission system compensation topological structure
  • Wireless electric energy transmission system compensation topological structure

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specific Embodiment approach 1

[0019] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the compensation topology of the wireless power transfer system described in this embodiment, the topology includes a DC input voltage source U in , full-bridge inverter 1, S / CLC compensation topology 2, full-wave rectifier 3, filter inductor L F , filter capacitor C F and load resistor R L ;

[0020] One DC input terminal of the full-bridge inverter 1 is connected to the DC input voltage source U in The positive pole of the full-bridge inverter 1 is connected to the DC input voltage source U in the negative pole;

[0021] S / CLC compensation topology 2 includes primary side series compensation capacitor C 1 , loosely coupled transformer, secondary side parallel compensation capacitor C 2 , Secondary side series compensation inductance L 1 and phase shift capacitor C 3 ;Primary side series compensation capacitor C 1 One end of is connected to an AC output end of the f...

specific Embodiment approach 2

[0024] Specific implementation mode 2: This implementation mode further explains the implementation mode 1. The parameter selection of the S / CLC compensation topology 2 includes the series compensation capacitor C 1 , Secondary parallel compensation capacitor C 2 , Secondary side series compensation inductance L 1 and phase shift capacitor C 3 value;

[0025] The parameters are selected according to the following:

[0026] Step 1. Determine the system operating angular frequency ω according to the given parameters S , The self-inductance of the primary side of the loosely coupled transformer L P , Secondary side self-inductance L S and coupling coefficient k; given parameters include system output power P RL , size, transmission distance and quality;

[0027] Step 2. When the phase shift angle of the full-bridge inverter 1 is 0°, obtain the secondary side series compensation inductance L according to formula (1) 1 value of:

[0028]

[0029] In the formula, R L is...

specific Embodiment approach 3

[0036] Specific implementation mode three: this implementation mode further explains implementation mode one, C 3 It is a phase-shifting capacitor, which is used to adjust the input impedance angle.

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Abstract

The invention provides a wireless electric energy transmission system compensation topological structure, relates to the wireless electric energy transmission system compensation topological structure, and aims at solving the problems that the existing wireless electric energy transmission system compensation topological structure is high in the number of compensation devices, high in system cost and low in power density. The S/CLC compensation topology comprises a primary series compensation capacitor, a loosely coupled transformer, a secondary parallel compensation capacitor, a secondary series compensation inductor and a phase shifting capacitor. The primary series compensation capacitor is connected with a full-bridge inverter. The primary series compensation capacitor is connected with the primary self-inductor of the loosely coupled transformer. The primary self-inductor of the loosely coupled transformer is connected with the full-bridge inverter. The secondary self-inductor of the loosely coupled transformer is connected with the secondary parallel compensation capacitor and the secondary series compensation inductor. The secondary self-inductor of the loosely coupled transformer is connected with the secondary parallel compensation capacitor, the phase shifting capacitor and a full-wave rectifier. The secondary series compensation inductor is connected with the phase shifting capacitor and the full-wave rectifier. The wireless electric energy transmission system compensation topological structure is used for wireless electric energy transmission.

Description

technical field [0001] The invention relates to a compensation topology of a wireless power transmission system. Background technique [0002] There are at least four requirements for wireless power transfer compensation topology: ① can realize input zero phase angle (ZeroPhase Angle, ZPA), zero voltage switching (Zero Voltage Switching, ZVS) debugging is convenient; ② output voltage / current and The load is independent; ③The system output voltage / current is not limited by the loose coupling transformer; ④The number of compensation components is small, and the system power density and efficiency are high. The system output voltage / current is not limited by the loosely coupled transformer means that for a given load, without changing the input voltage and operating frequency of the wireless power transfer system or replacing the loosely coupled transformer, only by adjusting the parameters of the system compensation device Adjustable system output voltage / current characterist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02J50/12
CPCH02M3/335H02M1/0058Y02B70/10
Inventor 刘晓胜姚友素王懿杰张潇锐刘梦雨徐殿国
Owner HARBIN INST OF TECH
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