CN2393261Y - Electric-power high-frequency switch rectification power-supply - Google Patents
Electric-power high-frequency switch rectification power-supply Download PDFInfo
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- CN2393261Y CN2393261Y CN 99241896 CN99241896U CN2393261Y CN 2393261 Y CN2393261 Y CN 2393261Y CN 99241896 CN99241896 CN 99241896 CN 99241896 U CN99241896 U CN 99241896U CN 2393261 Y CN2393261 Y CN 2393261Y
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Abstract
The utility model belongs to an electric power high-frequency switch rectifying power supply used for electric power engineering. 380V AC voltage is input to an AC spike suppression filter circuit through an A point, a B point and a C point, various noise waves are filtered, DC voltage is output to a frequency converting inversion full bridge circuit through a full wave rectifying circuit, the frequency converting inversion full bridge circuit is controlled by a pulse width modulation circuit and a double-pulse trigger, a 5 end and a 6 end of a high-frequency transformer T output high-frequency AC voltage, the high-frequency AC voltage is sent to a secondary rectifying circuit to be rectified and is filtered by a secondary filter circuit to a DC output circuit to output DC voltage, and the DC voltage of the DC output circuit is fed back to the pulse width modulation circuit. The power supply has the advantages of high voltage stabilizing accuracy, low power consumption, low noise, small size, light weight, reliable work and simple structure.
Description
The utility model belongs to the DC power supply that power engineering is used, and particularly relates to a kind of electric power high-frequency switch rectifying power supply.
At present, the DC power supply that is used for electric power is a silicon controlled rectification power source, and its major defect is:
1. controllable silicon can not come rectification by the control angle of flow, and there be " dead band " in the angle of flow, needs the forced commutation circuit from turn-offing.
2. silicon controlled rectifier exists the constant current constant voltage precision low, particularly ripple coefficient can not satisfy greatly the requirement of power engineering protection and valve-control sealed lead acid battery to the ripple coefficient peak value less than 1.5% requirement.Solving needs to strengthen filter capacitor, inductance, and cost is increased.
3. silicon controlled rectifier AC power, R such as the isolating transformer of power frequency 50Hz, reactor, C component size are big, and heavy, consume a large amount of copper, steel, and heating loss's die efficient is low, produces the noise pollution environment, is detrimental to health.
Main purpose of the present utility model is, overcomes the shortcoming that existing silicon controlled rectification power source exists, and a kind of electric power high-frequency switch rectifying power supply of new structure is provided.
This shows that above-mentioned silicon controlled rectification power source has many defectives, and demands urgently being improved, the design people is based on abundant practical experience and professional knowledge, through constantly research, design, and after studying sample and improvement repeatedly, create the utility model finally.
The purpose of this utility model is realized by following technical scheme.According to the electric power high-frequency switch rectifying power supply that the utility model proposes, it includes and exchanges spike inhibition filter circuit, full-wave rectifying circuit, secondary rectification circuit, the secondary filtering circuit, dc output circuit and pulse width modulation circuit, it is characterized in that: the 380V alternating voltage is through A, B, 3 of C input to and exchange spike inhibition filter circuit, the various clutters of filtering, give frequency conversion inversion full-bridge circuit through the full-wave rectifying circuit output dc voltage again, frequency conversion inversion full-bridge circuit is subjected to the control of pulse width modulation circuit and double trigger, at 5 of high frequency transformer T, 6 ends output high-frequency ac voltage is delivered to the secondary rectification circuit rectification, again through the secondary filtering circuit filtering to the dc output circuit output dc voltage, the direct voltage of dc output circuit also feeds back to pulse width modulation circuit.
Preceding described frequency conversion inversion full-bridge circuit is to be connected to form by four metal-oxide-semiconductors and high frequency transformer T.
Preceding described frequency conversion inversion full-bridge circuit can be connected to form by eight metal-oxide-semiconductors and high frequency transformer T.
Preceding described double trigger interconnects institute by two pairs of double-triode valve, diode, transformer and resistance, electric capacity and forms.
The utility model compared with prior art has tangible advantage and good effect.The utlity model has following advantage: owing to adopted frequency conversion inversion full-bridge circuit and pulse width modulation circuit and the double trigger of forming with metal-oxide-semiconductor and high frequency transformer, improve the precision of voltage regulation, the operating efficiency of power supply, reduced power consumption, noise, volume and weight.This power work is reliable, and is simple in structure.
Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
1. exchange spike and suppress filter circuit 2. full-wave rectifying circuits 3. frequency conversion inversion full-bridge circuits 4. double triggers 5. secondary rectification circuit 6. secondary filtering circuit 7. dc output circuits 8. pulse width modulation circuits
Main components and parts:
Inversion full-bridge metal-oxide-semiconductor IXFH27N800-803; IXYS company product; Drain electrode, former extremely withstand voltage 800V, conducting electric current 27A (13A);
High frequency transformer T is high magnetic conduction, ferrite material;
Double trigger T
13, T
14, T
15, P
2
Quick metal-oxide-semiconductor IRF840,400V, 8A;
Voltage-stabiliser tube Z
8-Z
15, 12V (2.4V);
(PWM) integrated circuit UC1846
See also shown in the accompanying drawing, exchange 380V ± 15%, 50Hz ± 5% three-phase alternating-current supply inputs to and exchanges spike inhibition filter circuit 1, and this circuit is made up of various resistance, electric capacity and inductance.Remove from the various interference of AC power electrical network by this circuit; As motor start-up, the interchange spike that the divide-shut brake of various switch electromagnetic mechanism and thunderbolt produce disturbs to obtain AC sine wave preferably, and this circuit also plays and prevents that the radio frequency spike that high frequency switch power produces from disturbing simultaneously, the Harmonic Interference and the high-frequency noise of voltage stabilizing circuit pollutes electrical network to the diffusion of AC power electrical network in the Switching Power Supply.
Suppress filtered interchange and be input to by D1-D6, L4 and C7 form three-phase full wave rectifier circuit 2.D1-D6 is made of VU035-16N07 fast recovery diode integrated circuit, various electric capacity, inductance voltage stabilizing didoe etc.It is rectified into direct current square tooth ripple with the AC sine wave of input, and the little direct current of ripple coefficient is through 1
(+), 2
(-)Send, finish a rectification AC/DC conversion.Simultaneously, in case be input to the instantaneous interruption of the interchange of three-phase full wave rectifier circuit 2, energy stored is kept direct voltage and is sent the needed time in the capacitor in this circuit.
High-frequency inversion full-bridge circuit 3 by
#1-
#4 (also can brachium pontis again each 1 in parallel be made into 8) metal-oxide-semiconductor forms 4 brachium pontis of inversion full-bridge, the DC power supply 1 after a rectification
(+), 2
(-)Insert an antinode of inversion full-bridge, promptly
#The anode of 1MOS pipe,
(#)The negative terminal of 2MOS pipe; Another antinode, promptly
#The negative terminal of 1MOS pipe connects an end of the former limit of high frequency transformer (T) winding, contact 3,
#The other end of the former limit of positive termination high frequency transformer (T) winding of 4MOS pipe, contact 4; The connection of 4 metal-oxide-semiconductors is;
#1,
#The parallel connection of 3MOS pipe anode,
#2,
#The parallel connection of 4MOS pipe negative terminal,
#1MOS pipe negative terminal with
#2MOS pipe anode links to each other,
#The 3MOS negative terminal with
#The 4MOS anode links to each other.
On the other hand,
#1-
#The trigger electrode of 4MOS pipe and T
13-T
15And P
2Link to each other Deng the double trigger of forming, double trigger 4 links to each other with (PWM) pulse width modulation integrated circuit 8, and (PWM) integrated circuit is gathered output dc voltage, current feedback signal from dc output circuit.
Frequency conversion inversion full-bridge circuit operation principle: when the direct current of rectification input through 1
(+), 2
(-)Be input to
#1,
#3MOS manages anode,
#2,
#During 4MOS pipe negative terminal, (PWM) pulse width modulation integrated circuit 8 is under the working power that itself disposes promotes, and from 11 contacts, 14 contacts send voltage pulse signal in turn, deliver to T
13-T
15And P
2The double trigger of forming 4, T
13, T
14Dipulse make
#1,
#4MOS manages conducting, and DC power supply is from 1
(+)Extremely
#The 1MOS pipe
(+)Warp
(-)The former limit of tremendously high frequency transformer T winding 3 contacts produce an I who is directed downwards
1Electric current to 4 contact extremely
#The 4MOS pipe
(+)Warp
(-)To DC power supply 2
(-)Form the loop.Work as T
13, T
14Input pulse narrows down
#1,
#The 4MOS pipe is imported a pulse signal again from (PWM) pulse width modulation integrated circuit 14 contacts and is delivered to T when not conducting
15, P
2The double trigger of forming 4 is at T
15, P
2Promote to make down
#3,
#2MOS manages conducting, and this moment, DC power supply was from 1
(+)Extremely
#The 3MOS pipe
(+)Warp
(-)The former limit of tremendously high frequency transformer T winding group 4 contacts produce the I that direction makes progress
2Electric current to 3 contact extremely
#The 2MOS pipe
(+)Warp
(-)To DC power supply 2
(-)Form the loop.Because (PWM) to collect electric current, voltage signal from the direct current output loop be the dc current signal that continuous galvanic current is pressed and changed to pulse width modulation integrated circuit 8, through 8 modulation of (PWM) pulse width modulation integrated circuit, from the pulse signal of 11,14 contacts input different in width, through double trigger T
13, T
14Conducting
#1,
#The 4MOS pipe, T
15, P
2Conducting
#3,
#2MOS pipe, and 11,14 contacts send pulse signal and differ 180 °, change frequency are 1/2 * 300KHz/ more than second, therefore produce the electric current I (I that a direction constantly changes between the former limit of high frequency transformer winding contact 3,4
1With I
2Direction is opposite), the alternating current of frequency more than 250KHz, i.e. DC/AC conversion.Pay the high-frequency ac of limit generation at high frequency transformer and deliver to secondary rectification circuit 5 through contact 5,6.High-frequency inversion full-bridge high-frequency transformer pays the limit winding 5,6 contacts, with the 250KHz alternating voltage, is input to by D
30-D
33Semi-controlled bridge rectifier circuit with R, C form is rectified into the rectification square wave with ac square wave and is input to the next stage filter circuit.
The direct current square wave of secondary filtering circuit 6 after the secondary rectification is by by L
8-L
10, E
25-26, C
73-75The filter circuit of forming, ripple coefficient is little with obtaining after the filtering of pulsating direct current square wave, and the stable direct voltage that is similar to straight line is sent.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection range of technical solutions of the utility model according to the utility model technical spirit.
Claims (4)
1, a kind of electric power high-frequency switch rectifying power supply, it includes and exchanges spike inhibition filter circuit, full-wave rectifying circuit, secondary rectification circuit, the secondary filtering circuit, dc output circuit and pulse width modulation circuit, it is characterized in that: the 380V alternating voltage is through A, B, 3 of C input to and exchange spike inhibition filter circuit, the various clutters of filtering, give frequency conversion inversion full-bridge circuit through the full-wave rectifying circuit output dc voltage again, frequency conversion inversion full-bridge circuit is subjected to the control of pulse width modulation circuit and double trigger, at 5 of high frequency transformer T, 6 ends output high-frequency ac voltage is delivered to the secondary rectification circuit rectification, again through the secondary filtering circuit filtering to the dc output circuit output dc voltage, the direct voltage of dc output circuit also feeds back to pulse width modulation circuit.
2, electric power high-frequency switch rectifying power supply according to claim 1 is characterized in that described frequency conversion inversion full-bridge circuit is to be connected to form by four metal-oxide-semiconductors and high frequency transformer T.
3, electric power high-frequency switch rectifying power supply according to claim 2 is characterized in that described frequency conversion inversion full-bridge circuit can be connected to form by eight metal-oxide-semiconductors and high frequency transformer T.
4, electric power high-frequency switch rectifying power supply according to claim 3 is characterized in that described double trigger interconnects institute by two pairs of double-triode valve, diode, transformer and resistance, electric capacity and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99241896 CN2393261Y (en) | 1999-08-19 | 1999-08-19 | Electric-power high-frequency switch rectification power-supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99241896 CN2393261Y (en) | 1999-08-19 | 1999-08-19 | Electric-power high-frequency switch rectification power-supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2393261Y true CN2393261Y (en) | 2000-08-23 |
Family
ID=34028671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99241896 Expired - Fee Related CN2393261Y (en) | 1999-08-19 | 1999-08-19 | Electric-power high-frequency switch rectification power-supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2393261Y (en) |
-
1999
- 1999-08-19 CN CN 99241896 patent/CN2393261Y/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Zhizhong Document name: Notification of Termination of Patent Right |
|
| 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 |