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Step-up converter for high speed solenoid valve driving

A technology of step-up converter and high-speed solenoid valve, which is applied in the direction of adjusting electric variable, converting device of output power, converting DC power input to DC power output, etc. Power switch tube, boost circuit interference and other problems, to achieve the effect of improved inductance volume, high power density, and fast response speed

Inactive Publication Date: 2011-08-31
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this method is also very obvious. At the moment when the power switch tube is turned off, the energy of the magnetic circuit needs to be transferred from the primary to the secondary, and the actual magnetic circuit of the transformer has magnetic flux leakage. The induced voltage, which may reversely break down the power switch tube and cause the entire circuit to fail
In addition, due to the phenomenon of magnetic flux leakage, the boost circuit is likely to cause interference to other circuits, and the electromagnetic compatibility is poor.
Therefore, the flyback transformer step-up method has high requirements for the winding process and packaging of the transformer, and also has high requirements for the reverse breakdown voltage of the power switch tube, which is at least 1.5 times the rated reverse breakdown voltage , so this boost method cannot well meet the requirements of high-speed solenoid valve drive

Method used

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  • Step-up converter for high speed solenoid valve driving
  • Step-up converter for high speed solenoid valve driving
  • Step-up converter for high speed solenoid valve driving

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The present invention is a boost converter for high-speed solenoid valve drive, such as Figure 4 As shown, it includes input power Vi, filter capacitor Ci, center tap transformer T2, power switch tube M, output diode D, output capacitor Co, current sampling resistor Rs, boost controller IC1, first divider resistor R1 and second Divider resistor R2. Wherein, the boost controller IC1 is an integrated circuit chip, which has the functions of pulse width modulation (PWM) control, low-side current feedback and output voltage feedback.

[0025] Wherein, the input power Vi is connected to the filter capacitor Ci, and the filter capacitor Ci is grounded. The input power Vi is also connected to one end of the intermediate tap transformer T2, and the input power Vi can also be connected to the input end of the intermediate tap transformer T2 through a relay, ...

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Abstract

The invention discloses a step-up converter for high speed solenoid valve driving, which belongs to the field of high actuator driving. The step-up converter aims to overcome the shortcomings of a single-inductor step-up circuit and a flyback transformer, combines the advantages of a single-inductor step-up way and a flyback transformer step-up way, adopts a centre-tapped transformer as a step-up inductor, achieves improvements in step-up ratio, working frequency, inductor volume and working efficiency, and can reduce system cost and improve the level of integration; and a centre-tapped transformer step-up way combines the advantages of transformer step-up and inductor step-up, is particularly suitable for high voltage production for the high speed solenoid valve driving, and ensures an output voltage range of 80 to 150V.

Description

technical field [0001] The invention relates to a low-resistance fast-response solenoid valve drive boost converter, which belongs to the field of high-speed actuator drive, specifically, it is a boost converter that can increase the input and output boost multiples, increase the power density of the boost conversion module, reduce the A step-up converter for driving high-speed solenoid valves with output voltage fluctuations and reduced output voltage recovery time. Background technique [0002] High-speed solenoid valves are more and more widely used in modern industry, whether it is general industry or special field. In general industries, high-speed response solenoid valves have a great influence on the control accuracy and speed of the entire system. The faster the response speed of the solenoid valve, the more flexible the system control and the better the overall performance. In special fields, such as the automobile industry, high-speed solenoid valves are more wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
Inventor 张奇杜发荣韩树军
Owner BEIHANG UNIV
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