CN2147688Y - Microcomputer ultrahigh frequency large power contravariant power supply - Google Patents
Microcomputer ultrahigh frequency large power contravariant power supply Download PDFInfo
- Publication number
- CN2147688Y CN2147688Y CN 92245651 CN92245651U CN2147688Y CN 2147688 Y CN2147688 Y CN 2147688Y CN 92245651 CN92245651 CN 92245651 CN 92245651 U CN92245651 U CN 92245651U CN 2147688 Y CN2147688 Y CN 2147688Y
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- Prior art keywords
- circuit
- contravariant
- utility
- model
- microcomputer
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Abstract
The utility model discloses a microcomputer ultrahigh frequency large power contravariant power supply which is composed of a working circuit and a control circuit. The utility model is characterized in that each bridge arm of a contravariant bridge is formed by that a plurality of element circuits are connected with each other in series; each element circuit is formed by that an MOS tube, follow current diodes, a resistance-capacity absorbing circuit, and grading resistors are connected in parallel. The utility model can use field effect tubes to manufacture the contravariant bridge of the contravariant power supply, wherein, the field effect tubes have low voltage resistance and small electric current, and the contravariant bridge reliably works from a plurality of kilowatts to scores of kilowatts. The utility model has the advantages of light weight, small size, no noise, and no vibration. For the utility model, capacity usage ratio reaches 90%, and contravariant frequency reaches 60KHz which is ahead of world leading level.
Description
Microcomputer hyperfrequency large power inverter power source belongs to the electrical equipment technical field.
Existing large power supply is to adopt the electromagnetic conversion technology to realize, have bulky, the weight energy consumption is also big, a series of shortcomings such as dynamic response is poor, noise height.And the hyperfrequency large power inverter power source of common concern in recent years and research owing to the performance requirement height of the field effect transistor of inversion electric bridge (reverse breakdown voltage, operating current) wherein, make the cost of this class power supply increase substantially, can not form commodity.
The purpose of this utility model is to adopt the field effect transistor that reverse breakdown voltage is low, operating current is little, can produce the inversion electric bridge that withstand voltage height, electric current are big, cost is not really high again by reasonable combination, be equipped with the inverter that suitable software and hardware just can be realized the hyperfrequency large power multifunctional again.
The utility model is made up of operating circuit and control circuit two large divisions.Control circuit is synthesized with driving output, microcomputer, control power supply by A/D conversion, demonstration and key entry, PWm and forms.Operating circuit is made up of rectifier circuit, capacitive filter, inversion electric bridge, current transformer, contravariant transformer, inductance-capacitance filter.Each brachium pontis that it is characterized in that the inversion electric bridge is composed in series by a plurality of element circuits, and each element circuit is composed in parallel by metal-oxide-semiconductor and fly-wheel diode, resistance capaciting absorpting circuit, grading resistor.
Good effect of the present utility model: the utility model energy enough withstand voltage lower (1000V) is following), the field effect transistor of electric current less (several ampere) produces the inversion electric bridge of reliably working at the inverter of several kilowatts to tens kilowatts order of magnitude power outputs.Old-fashioned power supply weight/power ratio reduction by 90% mutually with electromagnetic conversion, dynamic responding speed has improved one more than the order of magnitude, the noiselessness of this power supply own, friction, capacity usage ratio nearly 90%, comparing with the conventional inversion power supply, is that control core circuit and button input, number show owing to adopted microcomputer, makes operation comfortable more flexibly, function is variation also, can reach multifrequency nature outputs such as direct current and pulse.Especially be the digital generation PWm debug circuit technology of core with the microcomputer, make reverse frequency surpass 60KHZ, this index is in world lead level.Because the raising of this index can reduce the complete machine weight and volume greatly, improve response characteristic.
Fig. 1 is an integrated circuit structural representation of the present utility model.
Fig. 2 is the electrical block diagram of element circuit in the inversion electric bridge.
Embodiment: present embodiment is made up of operating circuit and control circuit two large divisions.Control circuit by A/D conversion 1, show with key in 2, PWM is synthetic with drive output 3, microcomputer 4, control power supply 5 forms.Operating circuit by rectifier circuit 6, capacitive filter 7, inversion electric bridge 8, current transformer 9, contravariant transformer 10, full-wave rectifier 11, inductance-capacitance filter 12, form.Each brachium pontis of inversion electric bridge 8 is composed in series by two element circuits, and each element circuit is by the field effect transistor MTH10N80 of a withstand voltage 800V, sustained diode
3, R
1C
3Resistance capaciting absorpting circuit, grading resistor R
2Compose in parallel.It withstand voltagely is through two-stage unit circuit series connection back: 800V * 2 * 0.9=1440V(0.9 is withstand voltage coefficient) if after the series connection of N level element circuit, it is withstand voltage to be: V instead * n * 0.9.The benefit of sort circuit structure is the metal-oxide-semiconductor that can select for use performance lower, produces high performance inversion electric bridge, and cost is also not high.
The complete machine operation principle is summarized as follows: A/D conversion 1 is used to gather current transformer L
3Power supply feedback signal and load R
LThe voltage feedback signal at two ends, and send into microcomputer after signal digitalized with two.Show and key in 2 adjustment that are used for the selected and video data of function.PWM synthetic with drive output 3 and accept the signal of microcomputer output and move.Microcomputer 4 is cores of The whole control circuit, and also analysis is from the signal of A/D to accept key command by it, and control shows output.Control power supply 5 synthesizes with driving output 3, microcomputer 4 to A/D conversion 1, PWM provides the power supply guarantee.
Three-phase electricity becomes pulsating direct current through bridge rectifier 6, is added in behind capacitor filtering again
Start pulse signal is alternately imported at the I of inversion electric bridge 8, the control utmost point of II in two ends, and control I, two groups of field effect transistor of II are taken turns conducting, promptly makes field effect transistor I (a when a set of pulses
0), I (a
1), I (b
0), I (b
1) during conducting, II (a
0), II (a
1), II (b
0), II (b
1) end, vice versa.This takes turns the conducting electric current through contravariant transformer 10, again through full-wave rectifier 11, inductance-capacitance filter 12 at load R
LGo up and just obtain the direct current of output continuously.
Claims (1)
1, microcomputer hyperfrequency large power inverter power source is made up of operating circuit and control circuit two large divisions, control circuit is by A/D conversion 1, show and key entry 2, PWM is synthetic to export 3 with driving, microcomputer 4, control power supply 5 is formed, operating circuit is by rectifier circuit 6, capacitive filter 7, inversion electric bridge 8, current transformer 9, inverter voltage device 10, full-wave rectifier 11, inductance-capacitance filter 12 is formed, each brachium pontis that it is characterized in that the inversion electric bridge is composed in series by a plurality of element circuits, and each element circuit is by mos pipe and fly-wheel diode, resistance capaciting absorpting circuit, grading resistor composes in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92245651 CN2147688Y (en) | 1992-12-29 | 1992-12-29 | Microcomputer ultrahigh frequency large power contravariant power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92245651 CN2147688Y (en) | 1992-12-29 | 1992-12-29 | Microcomputer ultrahigh frequency large power contravariant power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2147688Y true CN2147688Y (en) | 1993-11-24 |
Family
ID=33784531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92245651 Expired - Fee Related CN2147688Y (en) | 1992-12-29 | 1992-12-29 | Microcomputer ultrahigh frequency large power contravariant power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2147688Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480244A (en) * | 2010-11-24 | 2012-05-30 | 中兴通讯股份有限公司 | High-power inverter system |
| CN103337979A (en) * | 2013-04-15 | 2013-10-02 | 湖南大学 | Ultrahigh frequency MHz high power conversion device |
| CN109474189A (en) * | 2017-09-08 | 2019-03-15 | 株洲中车时代电气股份有限公司 | A kind of high-power DC power supply |
-
1992
- 1992-12-29 CN CN 92245651 patent/CN2147688Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480244A (en) * | 2010-11-24 | 2012-05-30 | 中兴通讯股份有限公司 | High-power inverter system |
| CN103337979A (en) * | 2013-04-15 | 2013-10-02 | 湖南大学 | Ultrahigh frequency MHz high power conversion device |
| CN109474189A (en) * | 2017-09-08 | 2019-03-15 | 株洲中车时代电气股份有限公司 | A kind of high-power DC power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |