Design method for induction power transmission system having characteristics of constant current, constant voltage and constant frequency

A technology of inductive power transmission, constant current and constant voltage, which is applied in the direction of conversion equipment with intermediate conversion to AC, can solve the problems of reduced stability, increased design difficulty, complex system structure, etc., to reduce production costs and simplify System structure, the effect of good resistance to load disturbance

Active Publication Date: 2012-10-24
重庆前卫无线电能传输研究院有限公司
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Problems solved by technology

[0006] To sum up, in order to simply realize the constant current of the primary side resonant current of the system, the constant output voltage or the constant resonant operating frequency of the system, the traditional closed-loop control strategy can achieve better results, but if the above three characteristics are to be achieved at the same time, If the closed-loop control is introduced separately, the system structure will be extremely complex, the design difficulty will increase, and the stability will decrease

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  • Design method for induction power transmission system having characteristics of constant current, constant voltage and constant frequency
  • Design method for induction power transmission system having characteristics of constant current, constant voltage and constant frequency
  • Design method for induction power transmission system having characteristics of constant current, constant voltage and constant frequency

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[0037] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] Such as figure 1 As shown, a design method of an inductive power transfer system with constant current, constant voltage and constant frequency characteristics is carried out according to the following steps:

[0039] Step 1: First establish the model of the inductive power transfer system, including the DC power supply E dc , DC inductance L dc , an inverter circuit, a primary side resonant circuit, a secondary side resonant circuit and a load circuit, the primary side resonant circuit is composed of a transmitting coil L p and primary capacitance C p A parallel resonant circuit composed of the secondary side resonant circuit is composed of the pickup coil L s and the secondary capacitance C s Composed of series resonant circuit;

[0040] Such as figure 2 As shown, the inverter circui...

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Abstract

The invention discloses a design method for an induction power transmission system having the characteristics of constant current, constant voltage and constant frequency. An induction power transmission system model for a primary-side parallel resonance circuit and a secondary-side series resonance circuit is taken as a research object; the conditions of constant primary-side resonance current, constant resonance working frequency of the system and constant load output voltage are put forward on the basis of an alternating-current impedance method; and parameters of a resonance circuit are comprehensively designed according to the conditions, so that the induction power transmission system having the characteristics of constant current, constant voltage and constant frequency is formed. The design method has the beneficial effects: the primary-side resonance current, the resonance working frequency of the system and the load output voltage which are simultaneously and approximately constant are naturally ensured without adding a traditional closed-loop control circuit, the system structure is simplified and the production cost is lowered.

Description

technical field [0001] The invention relates to a non-contact inductive power transmission technology, specifically, a design method of an inductive power transmission system with constant current, constant voltage and constant frequency characteristics. Background technique [0002] Inductively power transfer (IPT) technology is a new, practical and flexible power supply technology based on the principle of electromagnetic induction, using the electromagnetic field as the medium, using modern power electronic conversion technology, power electromagnetic field coupling technology and modern control technology. In recent years, it has become one of the research hotspots in the field of power electronics, and has been widely used in fields such as transportation, medical treatment, oil exploration and robotics. ] . [0003] In the design of the IPT system, in order to improve the system's ability to carry the load, when the load is cut in, cut out and changed, the voltage out...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/28
Inventor 唐春森孙跃苏玉刚王智慧戴欣
Owner 重庆前卫无线电能传输研究院有限公司
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