CN102832694A - Auxiliary power supply of high-power UPS (uninterrupted power supply) - Google Patents
Auxiliary power supply of high-power UPS (uninterrupted power supply) Download PDFInfo
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- CN102832694A CN102832694A CN2012102944418A CN201210294441A CN102832694A CN 102832694 A CN102832694 A CN 102832694A CN 2012102944418 A CN2012102944418 A CN 2012102944418A CN 201210294441 A CN201210294441 A CN 201210294441A CN 102832694 A CN102832694 A CN 102832694A
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Abstract
The invention discloses an auxiliary power supply of a high-power UPS (uninterrupted power supply). The auxiliary power supply comprises a direct-current voltage input, an alternating-current voltage input, an isolating circuit for preventing reverse-filling of current, a rectification circuit, a filter circuit, a half-bridge isolating switch conversion circuit, a high-frequency rectification filter circuit, a voltage and current sampling circuit, a feedback control circuit, a PWM (pulse width modulation) controller and a double-end fly-back converter. The direct-current voltage input is sequentially isolated and filtered via the isolating circuit and the filter circuit, is converted into high-frequency PWM alternating-current voltage by the half-bridge isolating switch conversion circuit, and is isolated, coupled, rectified and filtered by the high-frequency rectification filter circuit, and then direct-current voltage is output. The half-bridge isolating switch conversion circuit is controlled by the PWM controller to output stabilized direct-current voltage. An input end of the double-end fly-back converter is connected with an output end of the filter circuit so that the double-end fly-back converter can access to a power source, and the double-end fly-back converter supplies power to the PWM controller. The auxiliary power supply of the high-power UPS can supply reliable and stable direct-current voltage output to the UPS.
Description
Technical field
The present invention relates to ups power, be specifically related to the accessory power supply of high power UPS.
Background technology
Along with the high speed development of power electronic technology, UPS develops toward the high reliability direction, and the triggering drive circuit of the logic control circuit among the UPS, module all needs the dc auxiliary supply power supply, so dc auxiliary supply must be very reliable.
But; All be to be realized by simple single-ended reverse exciting translation circuit to UPS power supply with accessory power supply generally, when higher, power switch pipe bears higher voltage, current stress to the accessory power supply of being made up of the single-ended reverse exciting translation circuit at input voltage; Damage easily; And when input voltage fluctuation is big, cause output unstable easily, finally cause the UPS fault.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of accessory power supply of high power UPS, and the direct voltage output of reliable and stable can be provided UPS.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is following:
The accessory power supply of high power UPS; Comprise: direct voltage input, alternating voltage are imported, are used to prevent anti-buffer circuit, rectification circuit, the filter circuit of irritating of electric current, are used for direct voltage is converted to semibridge system isolating switch translation circuit, rectifier filter circuit, electric current and voltage sample circuit, feedback control circuit, the PWM controller of high-frequency PWM alternating voltage and is used for the both-end inverse excitation type converter to the power supply of PWM controller; Said direct voltage input is carried out isolation filter through buffer circuit, filter circuit earlier successively; Convert the high-frequency PWM alternating voltage to through semibridge system isolating switch translation circuit then, again output dc voltage after rectifier filter circuit is carried out isolation coupling, rectifying and wave-filtering; The voltage of the said direct voltage that said electric current and voltage sample circuit will be exported, current sample are after the feedback control circuit judgment processing is imported the PWM controller then, by PWM controller control semibridge system isolating switch translation circuit output DC voltage-stabilizing; Said alternating voltage input input filter circuit filtering after the rectification circuit rectification; The input of said both-end inverse excitation type converter links to each other with the output of said filter circuit, so that the both-end inverse excitation type converter inserts power supply; Said both-end inverse excitation type converter has the power supply output and links to each other with the power input of PWM controller, so that the both-end inverse excitation type converter is the power supply of PWM controller.
Semibridge system isolating switch translation circuit according to the invention comprises first power amplification circuit, second power amplification circuit, first transformer, first adjust circuit, second adjust circuit, the 3rd switching tube and the 4th switching tube; Said first transformer comprises the first elementary winding, first secondary winding and second subprime winding; Said PWM controller is exported the complementary pulse signal of two-way respectively; One the tunnel successively through first power amplification circuit, the first elementary winding, first secondary winding, first circuit rear drive the 3rd switching tube of adjusting, and another road is successively through second power amplification circuit, the first elementary winding, second subprime winding, second circuit rear drive the 4th switching tube of adjusting.
Said semibridge system isolating switch translation circuit according to the invention comprises that also first absorbs circuit, the second absorption circuit; First absorbs circuit is connected between the drain electrode and source electrode of the 3rd switching tube, and second absorbs circuit is connected between the drain electrode and source electrode of the 4th switching tube.
Rectifier filter circuit according to the invention comprises second transformer, first rectifier diode, second rectifier diode, LC oscillating circuit; Said second transformer comprises the second elementary winding, level winding, the 4th secondary winding for the third time; Behind the elementary winding of said semibridge system isolating switch translation circuit output high-frequency PWM alternating voltage to the second; One the tunnel successively through level winding, first rectifies for the third time; Another road is successively through the 4th secondary winding, second rectifies, and two-way rectification output is all through LC oscillating circuit output DC voltage-stabilizing.
Electric current and voltage sample circuit according to the invention comprises the current transformer that is used to detect second transformer's primary current, be used for to output current control first comparator circuit, be used for output voltage is controlled second comparator circuit, optical coupling isolation circuit; Insert the respective input mouth of said PWM controller after the second elementary windings in series of the said current transformer and second transformer, the DC voltage-stabilizing of said semibridge system isolating switch translation circuit output compares the respective input mouth that exports said PWM controller to through first, second comparator circuit correspondence respectively.
The accessory power supply of high power UPS according to the invention also comprises secondary power supply, exports behind the quiet secondary power supply of DC voltage-stabilizing of said semibridge system isolating switch translation circuit output.
Both-end inverse excitation type converter according to the invention comprise the accessory power supply that is used to start said high power UPS the power initiation circuit, be used to close power shutdown circuit, the both-end inverse-excitation type translation circuit of the accessory power supply of said power UPS; Said both-end inverse-excitation type translation circuit comprises current source PWM IC and first switching tube, the second switch pipe that are driven by this current source PWM IC, and the drain electrode of said first switching tube links to each other with the drain electrode of second switch pipe; The output of said power initiation circuit, power shutdown circuit all links to each other with the corresponding input control end of current source PWM IC; The off switch of starting switch that the accessory power supply of said high power UPS also comprises the accessory power supply that is used to start said high power UPS and the accessory power supply that is used to close said power UPS; The output of said secondary power supply links to each other through the input of starting switch with the power initiation circuit, and the input of said power shutdown circuit links to each other with off switch.
The present invention is than the beneficial effect of prior art:
(1) the present invention has alternating voltage input, direct voltage input; Improved reliability; Input voltage than the situation higher, that fluctuation ratio is bigger under, avoid power switch pipe to bear excessive voltage, current stress, and to use secondary power supply be that UPS is provided required more stabilized supply voltage as ups system; Again through the both-end inverse excitation type converter for the PWM controller provides stable power, make the work of this accessory power supply more stable; Have feedback control circuit, overvoltage, over-current detection are carried out in output, protect the reliably working of this accessory power supply; Wherein, two switching tubes of both-end inverse excitation type converter are connected from circuit structure, and added driving pulse makes its colleague open, close simultaneously, so the voltage stress of single switching transistor can reduce half, thereby improve reliability;
(2) startup of the present invention, powered-down circuit can start/close this accessory power supply as required, with saves energy, and the required battery pack of protection direct voltage input.
Description of drawings
Fig. 1 is the connection schematic block diagram of the accessory power supply of high power UPS of the present invention;
Fig. 2 is the circuit diagram of the semibridge system isolated converter of the accessory power supply of high power UPS of the present invention;
Fig. 3 is the pin winding diagram of the PWM controller of the accessory power supply of high power UPS of the present invention;
Fig. 4 is the circuit diagram of the both-end inverse excitation type converter of the accessory power supply of high power UPS of the present invention.
Embodiment
The accessory power supply of high power UPS as shown in Figure 1; It comprises: direct voltage input, alternating voltage are imported, are used to prevent anti-buffer circuit, rectification circuit, the filter circuit of irritating of electric current, are used for direct voltage is converted to semibridge system isolating switch translation circuit, rectifier filter circuit, electric current and voltage sample circuit, feedback control circuit, the PWM controller of high-frequency PWM alternating voltage and is used for the both-end inverse excitation type converter to the power supply of PWM controller; The direct voltage input is carried out isolation filter through buffer circuit, filter circuit earlier successively; Convert the high-frequency PWM alternating voltage to through semibridge system isolating switch translation circuit then, again output dc voltage after rectifier filter circuit is carried out isolation coupling, rectifying and wave-filtering; The electric current and voltage sample circuit with the voltage, current sample of the direct voltage of output after the feedback control circuit judgment processing is imported the PWM controller then, by PWM controller control semibridge system isolating switch translation circuit output DC voltage-stabilizing; Alternating voltage input input filter circuit filtering after the rectification circuit rectification; The input of both-end inverse excitation type converter links to each other with the output of filter circuit, so that the both-end inverse excitation type converter inserts power supply; The both-end inverse excitation type converter has the power supply output and links to each other with the power input of PWM controller, so that the both-end inverse excitation type converter is the power supply of PWM controller.
As shown in Figure 2, the accessory power supply of present embodiment adopts the double loop power supply power supply, a route 384V DC-voltage supply, i.e. accumulator battery voltage power supply, another route 220V ac power supply.When no 22V AC power is supplied power to UPS, then by the 384V DC-voltage supply.AC power is isolated through buffer circuit after the rectification of isolation rectification circuit; Prevent the anti-accumulators group of irritating of commutating voltage, then through filter circuit filtering, again through semibridge system isolating switch translation circuit; Convert direct voltage to the high-frequency PWM alternating voltage; Carry out high frequency transformer isolation coupling, high-frequency rectification, High frequency filter through rectifier filter circuit again, the direct voltage of output+15V, IGBT drive circuit to UPS is used to supply power; Transfer signals to feedback control circuit through the electric current and voltage sample circuit after to output voltage and current sample; Deliver to the PWM controller after feedback control circuit deals with the signal that transmits and control, reach stable output voltage of output and overcurrent, overvoltage protection; Output+the 15V direct voltage again through secondary power supply be transformed into+12V ,-12V ,+direct current of 5V, master board to UPS is used to supply power.
When ac power supply; The alternating voltage input is connected to insurance F2, carries out overvoltage protection through piezo-resistance VR1, and the rectification circuit rectifying conversion of forming through bridge rectifier diode BR1 becomes direct current; Suppress surge current through thermistor NTC1 again; Prevent the impact of powered on moment super-high-current to power supply, the filter circuit of forming through capacitor C 10 and capacitor C 11 again is filtered into level and smooth direct current, and resistance R 4, resistance R 6 are the series average-voltage resistance of capacitor C 10, capacitor C 11.
When storage battery or commutation supply voltage; The direct voltage input is connected to insurance F1; Buffer circuit through check diode D1 forms is isolated, and after thermistor NTC1 suppressed surge current, the filter circuit of forming through capacitor C 10 and capacitor C 11 was filtered into level and smooth direct current again.
As shown in Figure 2; Semibridge system isolating switch translation circuit comprises first power amplification circuit, second power amplification circuit, the first transformer T2, first adjust circuit, second adjust circuit, the 3rd switching tube Q3 and the 4th switching tube Q4; The first transformer T2 comprises the first elementary winding N1, the first secondary winding N2 and second subprime winding N3; PWM controller U1 exports the complementary pulse signal of two-way respectively; One the tunnel successively through first power amplification circuit, the first elementary winding N1, the first secondary winding N2, first circuit rear drive the 3rd switching tube Q3 that adjusts, and another road is successively through second power amplification circuit, the first elementary winding N1, second subprime winding N3, second circuit rear drive the 4th switching tube Q4 that adjusts.Semibridge system isolating switch translation circuit comprises that also first absorbs circuit, the second absorption circuit, and first absorbs circuit is connected between the drain electrode and source electrode of the 3rd switching tube Q3, and second absorbs circuit is connected between the drain electrode and source electrode of the 4th switching tube Q4.
Rectifier filter circuit comprises the second transformer T8, the first rectifier diode D2, the second rectifier diode D3, LC oscillating circuit; The second transformer T8 comprises the second elementary winding N4, level winding N5, the 4th secondary winding N6 for the third time; Behind the elementary winding N4 of semibridge system isolating switch translation circuit output high-frequency PWM alternating voltage to the second; One the tunnel successively through level winding N5, the first rectifier diode D2 rectification for the third time; Another road is successively through the 4th secondary winding N6, the second rectifier diode D3 rectification, and two-way rectification output is all through LC oscillating circuit output DC voltage-stabilizing.
The electric current and voltage sample circuit comprise the primary current that is used to detect the second transformer T8 current transformer CT1, be used for to output current control first comparator circuit, be used for output voltage is controlled second comparator circuit, optical coupling isolation circuit; Insert the respective input mouth of PWM controller after current transformer CT1 connects with the second elementary winding N4 of the second transformer T8, the DC voltage-stabilizing of semibridge system isolating switch translation circuit output compares the respective input mouth that exports the PWM controller to through first, second comparator circuit correspondence respectively.
The accessory power supply of this high power UPS also comprises secondary power supply, exports behind the quiet secondary power supply of DC voltage-stabilizing of semibridge system isolating switch translation circuit output.
Wherein, buffer circuit, rectification circuit, filter circuit, semibridge system isolating switch translation circuit, rectifier filter circuit, electric current and voltage sample circuit, feedback control circuit, PWM controller and secondary power supply constitute the semibridge system isolated converter jointly.
The direct current of filter circuit output is controlled by the 3rd switching tube Q3 and the 4th switching tube Q4 jointly; Transform to level winding N5 and the 4th secondary winding N6 for the third time through the second elementary winding N4, capacitance C16 and the current transformer CT1 of the second transformer T8; The first secondary winding N2 is parallelly connected after the second rectifier diode D3 rectification with second subprime winding N5 through the first rectifier diode D2, and the LC oscillating circuit of forming through inductance L 4 and capacitor C 23, capacitor C 26 capacitor C 28 again is filtered into+direct current of 15V.The absorption circuit of resistance R 7 and the capacitor C 19 compositions first rectifier diode D2, resistance R 8, capacitor C 20 are formed the absorption circuit of the second rectifier diode D3.Capacitor C 5, capacitor C 85 and diode D20 form first of the 3rd switching tube Q3 and absorb circuit, and capacitor C 6, capacitor C 86 and diode D16 form second of the 4th switching tube Q4 and absorb circuit.Magnetic bias takes place in capacitance C16 when preventing the work of semibridge system isolated converter; And the absorption circuit of first, second valve electrode pipe D2, D3 can reduce the loss of first, second rectifier diode D2, D3, makes first, second rectifier diode D2, D3 can safer work.
As shown in Figure 3, the PWM controller U1 of present embodiment adopts voltage-type pulse-width modulation IC, and the chip model is SG3525.SG3525 is specialized voltages type pulse-width modulation IC, favorable working performance, and the outer member consumption is little, inner soft start, its pin function is following:
1.Inv.input, pin 1: error amplifier reverse input end.In closed-loop system, this pin connects feedback signal.In open cycle system, this end links to each other with compensating signal input (pin 9), can constitute follower.
2.Noninv.input pin 2: error amplifier is input in the same way.In closed-loop system and open cycle system, the given signal of this termination.As required, between this end and compensating signal input (pin 9), insert dissimilar feedback networks, can composition, the adjuster of types such as proportional integral and integration.
3.Sync, pin 3: the external synchronous signal input end of oscillator.This termination external sync pulse signal can be realized with external circuit synchronous.
4.OSC.Output, pin 4: oscillator output end.
5.CT, pin 5: oscillator timing capacitor incoming end.
6.RT, pin 6: oscillator timing resistor incoming end.
7.Discharge, pin 7: oscillator discharge end.An external discharge resistance between this end and the pin 5 constitutes discharge loop.
8.Soft-Start, pin 8: soft start capacitor incoming end.This end connects a soft start capacitor usually.
9.Compensation, pin 9:PWM comparator compensating signal input.Between this end and pin 2, insert dissimilar feedback networks, can composition, type adjustment devices such as proportional integral and integration.
10.Shutdown, pin 10: outside cut-off signals input.Controller output is under an embargo during this termination high level.This end can link to each other with protective circuit, to realize error protection.
11.Output A, pin 11: output terminals A.Pin 11 is two-way complementary output ends with pin 14.
12.Ground, pin 12: signal ground.
13.Vc, pin 13: output stage biased voltage incoming end.
14.Output B, pin 14: output B.Pin 14 is two-way complementary output ends with pin 11.
15.Vcc, pin 15: bias supply incoming end.
16.Vref, pin 16: reference power supply output.The reference voltage that the exportable temperature stability of this end is fabulous.
The HF switch voltage control chip MC33167 that secondary power supply adopts, inside is integrated PWM generator, error amplifier, switching tube and protective circuit.
The isolation of pulse drive signal is amplified: PWM controller U1 sees the complementary pulse signal of two-way off; The 11st pin output of one route PWM controller U1; First power amplification circuit of forming through resistance R 31, capacitor C 42, triode Q11 and triode Q12 carries out power amplification; The 14th pin output of another route PWM controller U1; Second power amplification circuit of forming through resistance R 25, capacitor C 44, triode Q9 and triode Q10 carries out power amplification; This two paths of signals again after the first elementary winding N1 of the capacitance C4 and the first transformer T2 carries out conversion, by second subprime winding N2 and for the third time a level winding N3 export the complementary signal that two-way has amplified respectively.The drive signal of second subprime winding N2 output first is adjusted after circuit adjusts through what resistance R 35, diode D11, resistance R 37, triode Q14 and resistance R 39 were formed, and the 3rd switching tube Q3 is driven; The drive signal of second subprime winding N3 output second is adjusted after circuit adjusts through what resistance R 36, diode D12, resistance R 38, triode Q15 and resistance R 40 were formed, and the 4th switching tube Q4 is driven.
To the elementary over-current detection of the second transformer T8: the first elementary winding N1 of the current transformer CT1 and the second transformer T8 is in series; Be used to detect the primary current of the second transformer T8; When surpassing, this primary current sets electric current; The primary current detection signal of current transformer CT1 output carries out rectification through the bridge rectifier diode that diode D24, D25, D26, D27 are formed; Through resistance R 5, resistance R 33 and capacitor C 45 the primary current detection signal is delivered to the 10th pin of PWM controller U1 again, this pin function is for closing the output drive signal dedicated pin.Be provided with in the present embodiment detected signal greater than 0.7V then PWM controller U1 close drive pulse signal; When this semibridge system isolated converter works in abnormality; Through being detected control, primary current protects the semibridge system isolated converter, so that this accessory power supply reliable operation.
The output current ring detects control: resistance R 9, resistance R 10 are used for the current detecting of this accessory power supply output DC, this detected signal are delivered to the 5th pin of the second voltage comparator U16B through resistance R 74; Resistance R 81, resistance R 82, capacitor C 61 and a reference source Q21 (adopting TL431) form the reference voltage output of a precision; After resistance R 72 and resistance R 73 dividing potential drops, send the 6th pin of the second voltage comparator U16B again, with the mistake current control of compensating network capacitor C 56, resistance R 67, capacitor C 59 and the paired output current of resistance R 71 mutual group; The second voltage comparator U16B and peripheral circuit thereof constitute second comparator circuit.When the output current overcurrent; The 7th pin of the second voltage comparator U16B is seen high level off; Deliver to the output of the internal error amplifier of PWM controller U1 through the optical coupling isolation circuit of diode D28 and optocoupler isolator U3, resistance R 66, resistance R 22, resistance R 21 and capacitor C 38 compositions; The direct controlling and driving signal pulse width is protected this semibridge system isolated converter when output short-circuit or output overloading, so that the work of this accessory power supply is more reliable.
The output voltage ring detects control: after resistance R 86, resistance R 87 and 75 pairs of this accessory power supply output DCs of resistance R voltage dividing potential drop, signal is delivered to the 3rd pin of the first voltage comparator U16A; Resistance R 81, resistance R 82, capacitor C 61 and a reference source Q21 form reference voltage and export the 2nd pin of delivering to the first voltage comparator U16A through resistance R 83, with the paired output voltage control of compensating network capacitor C 57, capacitor C 63, resistance R 85, capacitor C 62 and resistance R 83 mutual group; The first voltage comparator U16A and peripheral circuit thereof constitute first comparator circuit.When output voltage reaches setting voltage; The 1st pin output high level of the first voltage comparator U16A; Deliver to the output of the internal error amplifier of PWM controller U1 through the optical coupling isolation circuit of diode D29 and optocoupler isolator U3, resistance R 66, resistance R 22, resistance R 21 and capacitor C 38 compositions; The controlling and driving signal pulse width makes output voltage stabilization in the scope that requires, so that the work of this accessory power supply is more reliable.
As shown in Figure 3; Both-end inverse excitation type converter of the present invention comprise the accessory power supply that is used for starting power UPS the power initiation circuit, be used to close power shutdown circuit, the both-end inverse-excitation type translation circuit of the accessory power supply of power UPS; Both-end inverse-excitation type translation circuit comprises current source PWM IC U15 and the first switching tube pipe Q1, the second switch pipe Q2 that are driven by this current source PWM IC U15, and the drain electrode of the first switching tube Q1 links to each other with the drain electrode of second switch pipe Q2; The output of power initiation circuit, power shutdown circuit all links to each other with the corresponding input control end of current source PWM IC U15; The off switch of starting switch that the accessory power supply of high power UPS also comprises the accessory power supply that is used to start this high power UPS and the accessory power supply that is used to close this high power UPS; The output of secondary power supply links to each other through the input of starting switch with the power initiation circuit, and the input of power shutdown circuit links to each other with off switch.After pressing starting switch, just can start to accessory power supply; After pressing off switch, can close UPS earlier, close this accessory power supply again.
Two power switch pipes in the both-end inverse-excitation type translation circuit are connected from circuit structure; Added driving pulse is to open simultaneously; Close simultaneously,, thereby improved the reliability of this both-end inverse-excitation type translation circuit so the voltage stress of single power switch pipe can reduce half.
It is the control chip of UC3845 that the current source PWM IC U15 of present embodiment adopts model; Its input is got direct current CBUS+ from the filter circuit of semibridge system isolated converter, and again after thermistor NTC3 suppresses surge current, the one tunnel delivers to optocoupler isolator U6 through resistance R 183, resistance R 284 and resistance R 185 prepares for starting power supply through check diode D23; U15 is directly delivered to through resistance R 110, resistance R 111 and resistance R 112 in another road; Improve the compensation ability of U15, also have one the tunnel after capacitor C 7 filtering the elementary winding through high frequency transformer T3, through the first switching tube Q1, the 2nd Q2 pulse control; Be coupled to rectifier diode D9 rectification through transformer T3; Be filtered into direct voltage output Vbk by capacitor C 2, capacitor C 40 again ,+15V, the PWM controller of semibridge system disconnector converter is given in power supply.
The power initiation circuit: it is battery BAT1 charging that secondary power supply output+5V power supply is connected to diode D33 and R88 through starting switch; Battery provides voltage through triode Q18 and resistance R 70; Through the break-make of diode D30, resistance R 69 and resistance R 189 control optocoupler isolator U5, U6, start power operation again; Secondary power supply output+12V power supply is through the break-make of diode D31, resistance R 76, resistance R 69 and resistance R 189 control optocoupler isolator U5, U6, or bypass error protection power supply power supply+12V power supply+12B of UPS is through the break-make of diode D31, resistance R 76, resistance R 69 and resistance R 189 control photoelectricity coupling buffer circuit U5, U6.The power initiation circuit guarantees only when UPS need move, just to start this accessory power supply; For ups system provides required power supply; Avoid when not exchanging input and UPS and do not move, the accessory power supply electric energy on the batteries that dissipated is avoided long-term battery to cross and is put.
Power shutdown circuit: off switch output powered-down signal SHUTDOWN is behind resistance R 78, capacitor C 17, triode Q19, and one the tunnel controls the direct voltage of closing this both-end inverse excitation type converter with resistance R 68, optocoupler isolator U4 and resistance R 62 exports Vbk; Another road constitutes output dry contact signal circuit through resistance R 109, triode Q25, relay R Y1 and diode D46, when the direct voltage of this both-end inverse excitation type converter is exported Vbk, provides the dry contact signal simultaneously.After closing the direct voltage output Vbk of this both-end inverse excitation type converter, the direct voltage of this accessory power supply is also closed, and guarantees when UPS moves, can close accessory power supply saves energy, protection battery.This both-end inverse excitation type converter works the semibridge system disconnector converter for the semibridge system disconnector converter provides stable power supply more reliably when input voltage fluctuation is big.
The foregoing description is merely preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention; Be all variation and modification of doing according to content of the present invention, all contained by claim of the present invention scope required for protection.
Claims (7)
1. the accessory power supply of high power UPS; It is characterized in that comprising: direct voltage input, alternating voltage are imported, are used to prevent anti-buffer circuit, rectification circuit, the filter circuit of irritating of electric current, are used for direct voltage is converted to semibridge system isolating switch translation circuit, rectifier filter circuit, electric current and voltage sample circuit, feedback control circuit, the PWM controller of high-frequency PWM alternating voltage and is used for the both-end inverse excitation type converter to the power supply of PWM controller; Said direct voltage input is carried out isolation filter through buffer circuit, filter circuit earlier successively; Convert the high-frequency PWM alternating voltage to through semibridge system isolating switch translation circuit then, again output dc voltage after rectifier filter circuit is carried out isolation coupling, rectifying and wave-filtering; The voltage of the said direct voltage that said electric current and voltage sample circuit will be exported, current sample are after the feedback control circuit judgment processing is imported the PWM controller then, by PWM controller control semibridge system isolating switch translation circuit output DC voltage-stabilizing; Said alternating voltage input input filter circuit filtering after the rectification circuit rectification; The input of said both-end inverse excitation type converter links to each other with the output of said filter circuit, so that the both-end inverse excitation type converter inserts power supply; Said both-end inverse excitation type converter has the power supply output and links to each other with the power input of PWM controller, so that the both-end inverse excitation type converter is the power supply of PWM controller.
2. the accessory power supply of high power UPS according to claim 1; It is characterized in that: said semibridge system isolating switch translation circuit comprises first power amplification circuit, second power amplification circuit, first transformer, first adjust circuit, second adjust circuit, the 3rd switching tube and the 4th switching tube; Said first transformer comprises the first elementary winding, first secondary winding and second subprime winding; Said PWM controller is exported the complementary pulse signal of two-way respectively; One the tunnel successively through first power amplification circuit, the first elementary winding, first secondary winding, first circuit rear drive the 3rd switching tube of adjusting, and another road is successively through second power amplification circuit, the first elementary winding, second subprime winding, second circuit rear drive the 4th switching tube of adjusting.
3. the accessory power supply of high power UPS according to claim 2; It is characterized in that: said semibridge system isolating switch translation circuit comprises that also first absorbs circuit, the second absorption circuit; First absorbs circuit is connected between the drain electrode and source electrode of the 3rd switching tube, and second absorbs circuit is connected between the drain electrode and source electrode of the 4th switching tube.
4. the accessory power supply of high power UPS according to claim 3; It is characterized in that: said rectifier filter circuit comprises second transformer, first rectifier diode, second rectifier diode, LC oscillating circuit; Said second transformer comprises the second elementary winding, level winding, the 4th secondary winding for the third time; Behind the elementary winding of said semibridge system isolating switch translation circuit output high-frequency PWM alternating voltage to the second; One the tunnel successively through level winding, first rectifies for the third time, and another road is successively through the 4th secondary winding, second rectifies, and two-way rectification output is all exported DC voltage-stabilizing through the LC oscillating circuit.
5. the accessory power supply of high power UPS according to claim 4; It is characterized in that: said electric current and voltage sample circuit comprises the current transformer that is used to detect second transformer's primary current, be used for to output current control first comparator circuit, be used for output voltage is controlled second comparator circuit, optical coupling isolation circuit; Insert the respective input mouth of said PWM controller after the second elementary windings in series of the said current transformer and second transformer, the DC voltage-stabilizing of said semibridge system isolating switch translation circuit output compares the respective input mouth that exports said PWM controller to through first, second comparator circuit correspondence respectively.
6. according to the accessory power supply of each described high power UPS of claim 1-5, it is characterized in that: the accessory power supply of said high power UPS also comprises secondary power supply, and the DC voltage-stabilizing of said semibridge system isolating switch translation circuit output is exported behind secondary power supply.
7. the accessory power supply of high power UPS according to claim 6; It is characterized in that: said both-end inverse excitation type converter comprise the accessory power supply that is used to start said high power UPS the power initiation circuit, be used to close power shutdown circuit, the both-end inverse-excitation type translation circuit of the accessory power supply of said power UPS; Said both-end inverse-excitation type translation circuit comprises current source PWM IC and first switching tube, the second switch pipe that are driven by this current source PWM IC, and the drain electrode of said first switching tube links to each other with the drain electrode of second switch pipe; The output of said power initiation circuit, power shutdown circuit all links to each other with the corresponding input control end of current source PWM IC; The off switch of starting switch that the accessory power supply of said high power UPS also comprises the accessory power supply that is used to start said high power UPS and the accessory power supply that is used to close said power UPS; The output of said secondary power supply links to each other through the input of starting switch with the power initiation circuit, and the input of said power shutdown circuit links to each other with off switch.
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| CN201210294441.8A CN102832694B (en) | 2012-08-17 | 2012-08-17 | The accessory power supply of high power UPS |
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| CN201210294441.8A CN102832694B (en) | 2012-08-17 | 2012-08-17 | The accessory power supply of high power UPS |
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| CN102832694B CN102832694B (en) | 2015-11-25 |
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| CN (1) | CN102832694B (en) |
Cited By (13)
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| CN106130328A (en) * | 2016-08-20 | 2016-11-16 | 嘉兴国电通新能源科技有限公司 | A kind of double-tube series inverse-excitation type switch power-supply |
| CN107343245A (en) * | 2017-08-28 | 2017-11-10 | 东莞中拓机械技术开发有限公司 | A kind of double PWM unit power amplifier modules of pulsewidth modulation |
| CN107360502A (en) * | 2017-08-30 | 2017-11-17 | 东莞中拓机械技术开发有限公司 | A kind of double 1000W (IR2) the power amplifier modules of pulsewidth modulation |
| CN107769373A (en) * | 2017-11-09 | 2018-03-06 | 刘凡瑜 | A kind of new supply network |
| CN109149950A (en) * | 2018-11-01 | 2019-01-04 | 鞍山雷盛电子有限公司 | A kind of high-precision integrative high-frequency and high-voltage power supply |
| CN110391749A (en) * | 2018-10-09 | 2019-10-29 | 华北科技学院 | A kind of wide input switch power supply of high voltage |
| CN110729771A (en) * | 2019-10-28 | 2020-01-24 | 许继电气股份有限公司 | Self-powered device |
| CN110932555A (en) * | 2019-11-06 | 2020-03-27 | 青岛航天半导体研究所有限公司 | Power supply direct current output method |
| CN111239467A (en) * | 2020-03-13 | 2020-06-05 | 成都世翌信科技有限责任公司 | High-isolation voltage-resistant alternating-current voltage sensor |
| CN111262335A (en) * | 2020-03-24 | 2020-06-09 | 上海澳通韦尔电力电子有限公司 | Backup method for dual power supply of high-voltage power unit |
| CN112688578A (en) * | 2020-12-30 | 2021-04-20 | 东莞精恒电子有限公司 | Power amplifier power supply system of high-power digital power amplifier active sound box system |
| CN115032434A (en) * | 2022-06-08 | 2022-09-09 | 北京星辰空间科技有限公司 | Detection circuit with magnetic isolation function |
| CN116113106A (en) * | 2023-04-04 | 2023-05-12 | 广东东菱电源科技有限公司 | Multipath output auxiliary source standby low-power consumption circuit |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130328A (en) * | 2016-08-20 | 2016-11-16 | 嘉兴国电通新能源科技有限公司 | A kind of double-tube series inverse-excitation type switch power-supply |
| CN107343245A (en) * | 2017-08-28 | 2017-11-10 | 东莞中拓机械技术开发有限公司 | A kind of double PWM unit power amplifier modules of pulsewidth modulation |
| CN107343245B (en) * | 2017-08-28 | 2023-12-22 | 东莞精恒电子有限公司 | Pulse width modulation double PWM unit power amplifier module |
| CN107360502B (en) * | 2017-08-30 | 2023-12-22 | 东莞精恒电子有限公司 | Pulse width modulation double 1000W (IR 2) power amplifier module |
| CN107360502A (en) * | 2017-08-30 | 2017-11-17 | 东莞中拓机械技术开发有限公司 | A kind of double 1000W (IR2) the power amplifier modules of pulsewidth modulation |
| CN107769373A (en) * | 2017-11-09 | 2018-03-06 | 刘凡瑜 | A kind of new supply network |
| CN110391749A (en) * | 2018-10-09 | 2019-10-29 | 华北科技学院 | A kind of wide input switch power supply of high voltage |
| CN109149950A (en) * | 2018-11-01 | 2019-01-04 | 鞍山雷盛电子有限公司 | A kind of high-precision integrative high-frequency and high-voltage power supply |
| CN109149950B (en) * | 2018-11-01 | 2024-02-06 | 鞍山雷盛电子有限公司 | High-precision integrated high-frequency high-voltage power supply |
| CN110729771A (en) * | 2019-10-28 | 2020-01-24 | 许继电气股份有限公司 | Self-powered device |
| CN110729771B (en) * | 2019-10-28 | 2020-12-15 | 许继电气股份有限公司 | Self-powered device |
| CN110932555A (en) * | 2019-11-06 | 2020-03-27 | 青岛航天半导体研究所有限公司 | Power supply direct current output method |
| CN111239467A (en) * | 2020-03-13 | 2020-06-05 | 成都世翌信科技有限责任公司 | High-isolation voltage-resistant alternating-current voltage sensor |
| CN111262335A (en) * | 2020-03-24 | 2020-06-09 | 上海澳通韦尔电力电子有限公司 | Backup method for dual power supply of high-voltage power unit |
| CN112688578A (en) * | 2020-12-30 | 2021-04-20 | 东莞精恒电子有限公司 | Power amplifier power supply system of high-power digital power amplifier active sound box system |
| CN115032434A (en) * | 2022-06-08 | 2022-09-09 | 北京星辰空间科技有限公司 | Detection circuit with magnetic isolation function |
| CN116113106A (en) * | 2023-04-04 | 2023-05-12 | 广东东菱电源科技有限公司 | Multipath output auxiliary source standby low-power consumption circuit |
| CN116113106B (en) * | 2023-04-04 | 2023-06-20 | 广东东菱电源科技有限公司 | Multipath output auxiliary source standby low-power consumption circuit |
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