A high power transistor frequency conversion power supply
A high-power transistor, variable-frequency power supply technology, which is applied in the direction of converting AC power input into AC power output, AC power input into DC power output, and output power conversion devices, etc., can solve the problem of low startup success rate and high degree of danger. , large energy consumption and other problems, to achieve the effect of meeting the requirements of the heat treatment process, a wide range of frequency use, and a wide range of application prospects
A high-power transistor, variable-frequency power supply technology, which is applied in the direction of converting AC power input into AC power output, AC power input into DC power output, and output power conversion devices, etc., can solve the problem of low startup success rate and high degree of danger. , large energy consumption and other problems, to achieve the effect of meeting the requirements of the heat treatment process, a wide range of frequency use, and a wide range of application prospects
CN101127490AInactive Publication Date: 2008-02-20SHANGHAI HEATKING INDUCTION TECH CORP
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[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0013] A high-power transistor frequency conversion power supply is characterized in that it includes a three-phase full-bridge rectifier module 2 connected to a three-phase power frequency AC power supply 1 for rectifying three-phase power frequency AC power into single-phase pulsating DC power; a smoothing filter circuit 3. Connected to the output terminal of the three-phase full-bridge rectifier module 2, used to convert the unidirectional pulsating DC power into a constant DC current source; the inverter bridge circuit 4, connected to the smoothing filter circuit 3, used to invert the DC power into alternating current; the load oscillator 5 is connected to the output end of the inverter bridge circuit 4 for generating single-phase high-frequency alternating current; the protection circuit 6 is connected between the flat wave filter circuit 3 and the ...
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The utility model discloses a variable-frequency power supply of high power transistor, mainly comprising a three-phase bridge rectifier circuit, a plane-wave filter circuit, a combined contravariant bridge circuit and a control protection circuit. The utility model is characterized in that the three-phase power-frequency alternating current is converted into the direct current by connecting with an output power via a load circuit, and then the direct current is contradictorily converted into a single-phase high frequency alternating current. With high power electrical and electronic element, the utility model has the advantages of wide frequency application range, high power output and high power frequency, meeting the process requirement of the modern heat treatment. The power frequency of the utility model covers the intermediate frequency band and the superaudio frequency band, no special starting circuit is required and the inversion efficiency is high, therefore the application prospect is wide.
Description
Technical field: [0001] The invention relates to a power supply, in particular to a high-power transistor frequency conversion power supply. Background technique: [0002] With the continuous progress and improvement of the manufacturing process and technology of modern power electronic components, a brand-new switching device is being widely used, especially in the field of induction heating, which has greatly improved the heat treatment technology of metal materials and components. To improve, this switching device is an insulated gate transistor, or IGBT for short. This device has the characteristics of high input impedance, fast switching speed, good thermal stability, simple driving circuit, low on-state voltage, high withstand voltage and large current, and is widely used in modern inverter technology. . [0003] The application of the present invention is mainly in the technical field of surface heat treatment of metal materials, and the induction heating equipment ...
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Patent Timeline
20 Feb 2008
Publication
CN101127490A
- IPC
- H02M5/44; H02M5/458; H02M7/5387
- Inventors
- 江国清; 刘又红