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Single-phase double push-pull boost circuit based on silicon carbide MOSFET and boost method

A booster circuit, silicon carbide technology, applied in electrical components, regulating electrical variables, high-efficiency power electronic conversion, etc., can solve the problems of high price, large loss of vehicle inverter power supply, low power, etc., to improve efficiency and improve resistance. Interference and operating stability, improving the effect of current spikes

Inactive Publication Date: 2019-08-02
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the vehicle-mounted inverter power supply in the market has the disadvantages of large loss, high price, and low power, which has a great impact on improving the comfort of the car interior.

Method used

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  • Single-phase double push-pull boost circuit based on silicon carbide MOSFET and boost method
  • Single-phase double push-pull boost circuit based on silicon carbide MOSFET and boost method
  • Single-phase double push-pull boost circuit based on silicon carbide MOSFET and boost method

Examples

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Embodiment 1

[0050] With reference to the accompanying drawings, the push-pull boost circuit in a single-chip microcomputer-controlled vehicle-mounted inverter power supply in this embodiment needs to complete the conversion from 12V DC to 360V DC, with an output current of 5A, a rated power of 1kW, and an operating frequency of 50kHz. The ambient temperature is 0°C-55°C, and the allowable temperature rise is 40°C.

[0051] see figure 1 , is a relatively typical push-pull converter circuit, which is different from other different circuit structures. The push-pull circuit uses two switch tubes and connects them into a push-pull power amplifier form. The push-pull circuit has the advantages of simple driving circuit, high utilization rate of switching transformer magnetic core, high output current transient response speed, and good voltage output characteristics. The conversion circuit is driven by the PWM wave signal of the control circuit, VT 1 , VT 2 The two switching tubes are continu...

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PUM

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Abstract

The invention discloses a single-phase double push-pull boost circuit based on a silicon carbide MOSFET and a boost method. The front stage adopts a push-pull boost circuit and carries out control byan analog push-pull control circuit, and the rear stage adopts a full-bridge rectifier circuit; the push-pull circuit uses two switch tubes and connects the two switch tubes into a push-pull power amplifier, and two push-pull transformers are connected in parallel in primary and connected in series in secondary; a conversion circuit is under the driving of a PWM wave signal of the control circuit,the two switch tubes are continuously switched on and off by turns, DC input voltage is converted into AC high-frequency pulse voltage, and then the pulse alternating current is converted into DC high voltage through rectification and filtering. The single-phase double push-pull boost circuit has the advantages of low loss, high efficiency, high safety, simple circuit, low electromagnetic interference and the like.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, and more specifically, to a silicon carbide MOSFET-based single-phase double push-pull boost circuit and a boost method. Background technique [0002] With the continuous development of the automobile industry, people have higher and higher requirements for automobile functions in use. During the long-distance journey by car, since there is no AC power supply available, once people's camping headlights, notebook computers, digital cameras and other equipment are out of power, their normal use will be affected, causing a lot of inconvenience. These products are basically powered by power frequency alternating current, but most of the cars only provide 12V direct current, so the on-board inverter power supply has gradually become an indispensable electrical equipment for cars. [0003] At present, the vehicle-mounted inverter power supply in the market has the disadvantages of large l...

Claims

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Application Information

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IPC IPC(8): H02M3/337H02M1/34
CPCH02M1/34H02M3/337H02M1/0054Y02B70/10
Inventor 刘晓杰张婧婕张旻贾子彦刘超薛波罗印升吴全玉宋伟俞洋崔渊
Owner JIANGSU UNIV OF TECH
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