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Non-contact power transmission system based on Z-source inverter and phase-shifting control method thereof

A technology of electric energy transmission system and phase-shift control, which is applied in the direction of electromagnetic wave system, conversion equipment with intermediate conversion to AC, electrical components, etc., which can solve problems such as load work and achieve the effect of increasing reliability

Inactive Publication Date: 2009-09-23
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a non-contact power transmission system based on an impedance source inverter and its phase-shift control method, to realize the two-way adjustment of transmission power and load voltage of the non-contact power transmission system, and to solve the problem of non-contact power transmission. The problem that the load cannot work in the rated state due to factors such as load changes in the system

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  • Non-contact power transmission system based on Z-source inverter and phase-shifting control method thereof
  • Non-contact power transmission system based on Z-source inverter and phase-shifting control method thereof
  • Non-contact power transmission system based on Z-source inverter and phase-shifting control method thereof

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0018] Such as figure 1 As shown, the figure is a topology diagram of a non-contact power transmission system based on an impedance source inverter. In this circuit diagram, the circuit is divided into sending and receiving parts by the coupler. The sending part includes the input DC power supply, which can be obtained by rectifying and filtering the AC grid; the impedance source network, which enables the inverter bridge arm to withstand instantaneous short circuit and open circuit, increases system reliability, and introduces direct zero vector and Open circuit zero vector, so as to provide the possibility of step-up and step-down for the inverter. In addition, in order to prevent the backflow of current, a diode must be connected in series after the voltage source; the high-frequency inverter circuit is used to provide ...

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Abstract

The invention discloses a non-contact power transmission system based on a Z-source inverter and a phase-shifting control method thereof. A circuit is divided into a transmitting part and a receiving part by taking a coupler as a boundary. The transmitting part comprises an input direct current power supply, a Z-source network, an inverter circuit and an induction coupling primary winding, wherein a diode is connected serially behind a voltage source to prevent the reflow of current. The receiving part comprises an induction coupling secondary winding and a rectification filter circuit. In the system, the transmission power and the loading voltage of the system are reduced by driving the setting of a phase shifting angle in a pulse; and direct connection time is simultaneously added in the phase shifting angle to increase the transmission power and the loading voltage of the system, thereby realizing bidirectional adjustment of the transmission power and the loading voltage. The invention solves the problem that load can not work in a rated condition due to factors such as load change and the like in the non-contact power transmission system, and promotes the practicability progress of the non-contact power transmission technology.

Description

technical field [0001] The invention belongs to the technical field of power electronics and relates to a non-contact power transmission system, in particular to a non-contact power transmission system based on an impedance source inverter and a phase-shift control method thereof. Background technique [0002] So far, the main circuit topologies of contactless power transfer systems are mainly voltage source inverters and current source inverters, and there has been no research on contactless power transfer systems based on impedance source inverters. In addition, during the working process of the non-contact power transmission system, due to factors such as load changes, the input power of the system and the load voltage will change, so that the load cannot work at the rated state, resulting in waste of resources. Research on this aspect at home and abroad is also very important. few. [0003] The literature "Design and Realization of Small Non-contact Power Transmission S...

Claims

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Application Information

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IPC IPC(8): H02M3/28H02J17/00H02J50/10
Inventor 赵彪冷志伟陈希有
Owner DALIAN UNIV OF TECH
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