Circulating current control circuit system for inductive power transfer based on auxiliary inductance
A technology of inductive power transmission and auxiliary inductance, applied in circuit devices, high-efficiency power electronic conversion, conversion of AC power input to DC power output, etc., can solve problems such as increasing switching loss, reducing system transmission efficiency, and affecting system stable operation. , to achieve the effect of reducing the peak value of circulating current and reducing the damage rate
Active Publication Date: 2019-02-19
重庆华创智能科技研究院有限公司
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the IPT system, the switching of the switching tube at the non-zero point of the resonant capacitor voltage will lead to the occurrence of circulating current
Circulating current will distort the voltage at both ends of the resonant capacitor, and cause electromagnetic interference, increase switching loss, affect the stable operation of the system, and reduce the transmission efficiency of the system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0028] A circulating current control circuit system for inductive power transmission based on auxiliary inductance, such as figure 1 shown, including the DC power supply E in and filter inductor L dc A quasi-current source, a pulse generating circuit, a high-frequency inverter network, a primary side resonant network, a secondary side resonant network, a rectifier filter network and a load are formed, wherein the quasi-current source is connected to the high-frequency inverter network, as The high-frequency inverter network provides direct current, the pulse generating circuit is connected to the high-frequency inverter network, and outputs control pulses to control the output waveform of the high-frequency inverter network, and the high-frequency inverter network is connected to the high-frequency inverter network. The primary side resonant network is connected, the output square wave current is given to the primary side resonant network, the secondary side resonant network ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an induction electric energy transmission circular current control circuit system based on an auxiliary inductor. The auxiliary inductor L1 is arranged between an output end of a high frequency inversion network and a primary side resonance network and is used for realizing damping of a rising speed and a peak value of a circular current, each PWM period of a pulse generation circuit respectively has the time TOV when a first switch S1, a second switch S2, a third switch S3 and a fourth switch S4 simultaneously are conducted, namely the overlapped conduction time, on one hand, a current loop is provided for a filtering inductor Ldc, on the other hand, a current on the auxiliary inductor L1 is made to realize stable commutation, the induction electric energy transmission circulation control circuit system realizes approximate zero current opening and zero voltage turn-off, reduces a circular current peak, reduces loss of a switch tube and a switch and inhibits a relatively large circular current between the resonance network and the inversion network.
Description
technical field [0001] The invention relates to the technical field of inductive power transmission system circulation control, in particular to a circuit system for inductive power transmission circulation control based on auxiliary inductance. Background technique [0002] Inductively Power Transfer (IPT) technology is a new type of power transfer technology based on the principle of electromagnetic induction coupling, which comprehensively utilizes modern power electronics technology, high-power high-frequency conversion technology, and magnetic field coupling technology. Theory and strategy, to realize the technology that one or more electrical equipment obtains electrical energy from the power supply system in a non-electrical contact manner. This technology solves the problems and defects caused by the electrical connection of the traditional power supply method, and can realize the safe and flexible access of electric energy. In the IPT system, the switching of the s...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/537H02J50/12
CPCH02J5/005H02M7/537Y02B70/10
Inventor 戴欣李艳玲孙跃王智慧苏玉刚唐春森叶兆虹
Owner 重庆华创智能科技研究院有限公司