CN106532909A - UPS (Uninterruptible Power Supply) cold-start circuit - Google Patents
UPS (Uninterruptible Power Supply) cold-start circuit Download PDFInfo
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- CN106532909A CN106532909A CN201610910687.1A CN201610910687A CN106532909A CN 106532909 A CN106532909 A CN 106532909A CN 201610910687 A CN201610910687 A CN 201610910687A CN 106532909 A CN106532909 A CN 106532909A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Abstract
The invention is suitable for the circuit field and provides an UPS (Uninterruptible Power Supply) cold-start circuit. The UPS cold-start circuit is connected with a battery unit and a UPS system load unit. The UPS cold-start circuit comprises a first isolation transformation unit, a conflux unit, and a second isolation transformation unit. The input end of the first isolation transformation unit is connected with the battery unit; the conflux unit has a plurality of input ends which can input a power supply voltage, and the output end of the first isolation transformation unit is connected with the first input end of the plurality of input ends of the conflux unit; and the input end of the second isolation transformation unit is connected with the output end of the conflux unit, and the output end of the second isolation transformation unit is connected with the UPS system load unit. The negative of the battery unit and the output end of the UPS system are electrically isolated from the mains zero line, and the electric energy of the battery unit is converted into the working power supply of the UPS system, so that the UPS system is started by the battery unit without the mains supply, and the UPS system is directly started without influencing the mains supply. The circuit is easy to implement, the cost is low, and the operation of the UPS system is enabled to be more safe and reliable.
Description
Technical field
A kind of the invention belongs to circuit field, more particularly to UPS cold start-ups circuit.
Background technology
UPS (Uninterruptible Power System/Uninterruptible Power Supply, uninterruptedly
Power supply) it is that battery is connected with main frame, the system that direct current is converted into civil power is set by modular circuits such as main frame inverters
It is standby.It is mainly used in giving single computer, computer network system or other power electronic equipments such as magnetic valve, pressure transmitter etc.
Stable, continual supply of electric power is provided.Conventional UPS includes online ups system, this system no matter line voltage whether
Normally, loading alternating voltage used will be in running order all the time through inverter circuit, i.e. inverter circuit, on line type UPS
Generally double mapped structures, when so-called double conversion refer to UPS normal works, electric energy is have passed through after AC/DC, DC/AC converted twice
Load is resupplied, current online double conversion UPS battery cold start-ups have following two ways to realize.
First, a kind of existing on line type UPS as shown in Figure 1 battery cold start-up circuit, the input of ups system power supply
200 both positive and negative polarity of battery unit is directly connected on, be disadvantage of this is that, UPS must connect battery unit 200 and could start UPS, or
Battery unit 200 is not being connect, when UPS is electrically activated with city, the charger inside UPS first must work, allow charger to provide system
Voltage needed for power input, and the input of this kind of charger is directly connected on zero live wire of input of UPS, in the process of work
The higher hamonic wave of middle generation can be returned directly to the input port of UPS, and power grid quality is polluted, affect whole machine efficiency and
Conduction and radiation disturbance, its electromagnetic wave for producing also can be interfered to the equipment in spatial dimension or personnel.
Second, another kind of existing on line type UPS as shown in Figure 2 battery cold start-up circuit, ups system power supply it is defeated
Enter on UPS internal high pressure buses, battery unit 200 and bus are connected with circuit, by after cold starting switch in UPS
Portion's high voltage bus is charged, and after busbar voltage is increased to system power supply operating point, ups system power supply is started working, and controls afterwards
Device processed controls voltage booster circuit for battery to bus continued power, and which has the disadvantage to need specially to be equipped with cold start-up plate, uses on cold start-up plate
To IGCT, just needed with IGCT plus special drive circuit, cost can be very high, and the cold start-up circuit is relatively low in cell voltage
When occur start failure situation, in addition it suitable for three-phase four-wire system double cell unit 200 UPS, its battery list
Unit 200 must be with neutral tap, and for individual event input single cell units 200UPS are not applied to, another has the disadvantage that accessory power supply is defeated
Entering voltage can be very high, it is necessary to chooses the pressure switching tubes of 1600V or does switching tube, economy using the devices in series of two 900V
Poor, technical difficulty is larger.
In sum, not only security is poor for existing on line type UPS cold start-up circuit, and technology realizes that difficulty is big, into
This is higher.
The content of the invention
Embodiments provide a kind of UPS UPS cold start-up circuits, it is intended to solve that existing on line type UPS is cold to be opened
Not only security is poor for dynamic circuit, and technology realizes that difficulty is big, relatively costly problem.
The embodiment of the present invention is achieved in that a kind of UPS cold start-ups circuit, the UPS cold start-ups circuit and battery list
Unit and ups system load unit are connected, including：
First isolated variable unit, joining unit, and the second isolated variable unit；
The input of the first isolated variable unit is connected with the battery unit；
The joining unit has multiple inputs, output end and the joining unit of the first isolated variable unit
Multiple inputs in first input end be connected；
The input of the second isolated variable unit is connected with the output end of the joining unit, and second isolation becomes
The output end for changing unit is connected with the ups system load unit.
A kind of UPS UPS cold start-up circuits are embodiments provided, by the first isolated variable unit by battery list
In the DC voltage input joining unit of unit, joining unit is by other inputs of the DC voltage of battery unit and joining unit
The voltage of input is exported after being collected to the second isolated variable unit, to form the system voltage needed for ups system work；This
The output end of the negative pole and ups system of battery unit and civil power zero line are carried out electrical isolation by invention, by the electric energy of battery unit
The system power supply being converted into needed for ups system work, realizes starting the function of ups system without civil power from battery unit, while and
Do not affect civil power to directly initiate UPS, circuit structure is simple, it is easy to realize, cost is relatively low, and made by electrical isolation setting
The operation of ups system is more safe and reliable.
Description of the drawings
Fig. 1 is a kind of UPS cold start-ups circuit diagram that prior art is provided；
Fig. 2 is another kind of UPS cold start-ups circuit diagram that prior art is provided；
Fig. 3 is the UPS cold start-up circuit module figures that first embodiment of the invention is provided；
Fig. 4 is the schematic diagram of the UPS cold start-up circuits that second embodiment of the invention is provided；
Fig. 5 is the schematic diagram of the UPS cold start-up circuits that third embodiment of the invention is provided；
Fig. 6 is the schematic diagram of the UPS cold start-up circuits that fourth embodiment of the invention is provided；
Fig. 7 is the schematic diagram of the UPS cold start-up circuits that fifth embodiment of the invention is provided.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
A kind of UPS cold start-ups circuit is embodiments provided, by the first isolated variable unit by battery unit
In DC voltage input joining unit, other inputs of joining unit by the DC voltage of battery unit with joining unit are input into
Voltage collected after export to the second isolated variable unit, with formed ups system work needed for system voltage；The present invention
The output end of the negative pole and ups system of battery unit and civil power zero line are carried out into electrical isolation, the electric energy of battery unit is changed
System power supply into needed for ups system work, realizes starting the function of ups system without civil power from battery unit, while and not shadow
Ring civil power and directly initiate UPS, circuit structure is simple, it is easy to realize, cost is relatively low, and UPS systems are made by electrical isolation setting
The operation of system is more safe and reliable.
First embodiment
As shown in figure 3, embodiments providing a kind of UPS cold start-ups circuit 100, on line type UPS system is applied to,
The UPS cold start-ups circuit 100 is connected with battery unit 200 and ups system load unit 300.Wherein, battery unit 100 is straight
Stream power supply, is the device of formation steady current in holding circuit, the such as device such as dry cell, battery.Ups system load unit
300 i.e. UPS starts the load of work, provides ups system load unit 300 by UPS cold start-ups circuit 100 and enters normal work
The startup voltage of state, realizes cold start function of the battery unit 200 to ups system.In the present invention, UPS cold start-up circuits
100 include：First isolated variable unit 110, joining unit 120, and the second isolated variable unit 130.
In embodiments of the present invention, the input of the first isolated variable unit 110 is connected with battery unit 200；Conflux list
During unit 120 has multiple inputs, the output end of the first isolated variable unit 110 and multiple inputs of joining unit 120
First input end 121 is connected；The input of the second isolated variable unit 130 is connected with the output end of joining unit 120, second every
Output end from converter unit 130 is connected with load unit 300.
In embodiments of the present invention, also include one or more following combination in multiple inputs of joining unit 120：
The second input 122 being connected with civil power live wire；The 3rd input 123 that live wire is connected is bypassed with civil power；And and positive bus-bar
4th input 124 of connection.Wherein, first input end 121, the second input 122, the 3rd input 123 and the 4th input
There is multichannel to be input into common port 125 at end 124, and the multichannel input common port 125 is connected with civil power zero line.
In embodiments of the present invention, when UPS cold start-ups circuit 100 works, the first isolated variable unit 110 is by battery unit
200 output voltages carry out conversion process after, be input into joining unit 120 by first input end 121, and with by the second input
122nd, after the voltage of the 3rd input 123 or the input joining unit 120 of the 4th input 124 collects, it is input into the second isolation and becomes
Change unit 130 to be processed；The dc source that process is obtained is exported single to ups system load by the second isolated variable unit 130
Unit 300.
In detail, in one embodiment of the invention, ups system has a multiple-working mode, such as civil power main road pattern,
Civil power bypass mode, battery mode etc..If ups system is by start battery, i.e., in battery mode when, the second isolated variable unit
130 are mainly powered by the input voltage of the 4th input 124, and the output that the second isolated variable unit 130 is produced is just online
System power supply needed for the double conversion UPS of formula.
When ups system is electrically activated by city, the input voltage of the 4th input 124 is zero, if now the only second input
The input voltage at end 122, without the input voltage of the 3rd input 123, then the second isolated variable unit 130 is mainly by the
The input voltage of two inputs 122 is powered, the output that the second isolated variable unit 130 is produced system just for needed for ups system
Power supply.If likewise, the now only input voltage of the 3rd input 123, without the input voltage of the second input 122
When, then the second isolated variable unit 130 is mainly powered by the input voltage of the 3rd input 123, the second isolated variable unit
130 outputs for producing system power supply just for needed for online double conversion UPS.
In the embodiment of the present invention, UPS cold start-ups circuit 100 will be supplied to ups system load to use after civil power voltage stabilizing, now
Ups system be exactly an electric main voltage-stablizer, while it also to self-contained battery charge；Work as commercial power interruption, such as accident is stopped
When electric, the direct current energy of battery is continued supply 220V alternating currents by the square normal load of zero switch transition of inversion by UPS immediately,
Load is made to maintain normal work and protect load soft and hardware without damage.UPS equipment generally to overtension or brownout all
Protection can be provided；Until positive bus-bar is that the 4th input 124 supplies stable input voltage.
Second embodiment
As shown in figure 4, in embodiments of the present invention, the first isolated variable unit 110 is inverse-excitation type isolated converter.Specifically
Ground, in the inverse-excitation type isolated converter：The anode of diode D1 is connected with the positive pole of the battery unit, one end of electric capacity C1
It is connected with the negative electrode of diode D1, the other end is connected with the negative pole of the battery unit, one end of resistance R1 and the diode
The negative electrode connection of D1, the other end of resistance R1 are connected with the negative electrode of Zener diode ZD1, anode and the battery list of Zener diode
Unit is connected, and electric capacity C2 is in parallel with Zener diode ZD1, and one end of electric capacity C3 is connected with the negative electrode of diode D1, and electric capacity C3's is another
One end is connected with the negative electrode of diode D2, and resistance R2 is in parallel with C3, and one end of the former limit of inverse-excitation type isolating transformer T1 is with D1's
Negative electrode connects, and the other end of the former limit of inverse-excitation type isolating transformer T1 is connected with the anode of diode D2, inverse-excitation type isolation transformation
One end of the secondary of device T1 is connected with the anode of diode D6, the other end and the zero line phase of the secondary of inverse-excitation type isolating transformer T1
Even, the negative electrode of diode D6 is connected with the end of collecting of each input of the joining unit, and is connected to second isolation
One input of converter unit, the anode of diode D2 are connected with the output end of switching tube Q1, the input of switching tube Q1 with
The a port of one end of resistance R3 and pwm chip U1 is connected, the base stage of switching tube Q1 and the PWM of pwm chip U1
Output end is connected, and the other end of resistance R3 is connected with the negative pole of the battery unit, and the anode of ZD1 is with pwm chip U1's
The negative pole connection of a port and the battery unit；First voltage feedback network receives signal from the negative electrode of diode D6,
And feed back to pwm chip U1, and one end of the first feedback network is connected with the negative pole of the battery unit, the other end and zero
Line is connected.
Wherein, the input of the first isolated variable unit 110 terminates to the positive and negative electrode of battery unit 200, battery unit 200
Voltage the first direct current is exported by the first isolated variable unit 110 Jing after the switching tube Q1 copped waves that pwm chip U1 is controlled
Pressure, such as 200V, the first DC voltage deliver to the PWM of the first isolated variable unit 110 Jing after the process of first voltage feedback network
Control chip U1, as 110 output voltage feedback signal of the first isolated variable unit, to keep the first isolated variable unit 110
The voltage of output is not higher than the first DC voltage, corresponding for being not higher than 200V here, the output of the first isolated variable unit 110
Voltage Jing joining units 120, are converged with the input voltage of the second input 122, the 3rd input 123 and the 4th input 124
The input of the second isolated variable unit 130 is connected to afterwards.
In embodiments of the present invention, the first isolated variable unit 110 can be opened by switch SW1, and switch SW1 can be opened for contact
Close or other kinds of switch, the second isolated variable unit 130 is automatically turned on after input voltage reaches certain value.Switch SW1
As cold starting switch, connect in battery unit 200 and certain hour is connected with the first isolated variable unit 110, after such as 30 seconds, press
Lower switch SW1, it is possible to allow the first isolated variable unit 110 and the second isolated variable unit 130 to open successively.
Second isolated variable unit 130 includes isolating transformer T2, switching tube Q2, pwm chip U2 and second voltage
The major parts such as feedback network are constituted, and the second isolated variable unit 130 is output as multi-channel DC voltage, are different inside UPS
Device is powered.
In detail, one end of electric capacity C4 is connected with the negative electrode of diode D6, and the other end is connected with zero line, one end of resistance R4
It is connected with the negative electrode of diode D6, the other end is connected with the Vc ends of pwm chip U2 and the negative electrode of diode D12, PWM controls
The earth terminal of coremaking piece U2 is connected with zero line, while pwm chip U2 is connected with second voltage feedback network, with obtain by every
From the feedback signal of transformer T2 secondary；Electric capacity C5 is in parallel with resistance R5, and one common port is connected with the negative electrode of diode D6,
Another common port is connected with the negative electrode of diode D7, and pwm chip U2 is connected with the base stage of Q2, the anode of diode D7 with open
The colelctor electrode for closing pipe Q2 is connected, the emitter stage of switching tube Q2 be connected with a pin of pwm chip afterwards and resistance R6 one end
It is connected, the other end of resistance R6 is connected with zero line, isolating transformer T2 has two groups of primary coils, one of which primary coil
One end is connected with the negative electrode of diode D6, and the other end is connected with the anode of diode D7, one end of another group of primary coil and two
The anode of pole pipe D12 is connected, and the other end is connected with zero line, and isolating transformer T2 has multigroup secondary coil, as shown in figure 4, this
In the scheme provided in embodiment, isolated converter T2 includes four groups of secondary coils.
The voltage of the input of joining unit 120 is become by the second isolation Jing after the switching tube Q2 copped waves that pwm chip U2 is controlled
Change unit 130 and export the second DC voltage, the second DC voltage has plurality of specifications, such as+24V ,+15V, -15V and+5V's
DC voltage, is arranged according to actual needs, is specifically not construed as limiting.Second DC voltage wherein most important voltage Jing second all the way
The pwm chip U2 of the second isolated variable unit 130 is delivered to after voltage feedback network process, as the second isolated variable unit
130 output voltage feedback signal, to keep the output voltage stabilization of the second isolated variable unit 130.
In embodiments of the present invention, when the input voltage of the second isolated variable unit 130 delivers to PWM controls after resistance R4
Coremaking piece U2, higher than after certain value, the electric current for flowing through resistance R4 reaches the operating current of pwm chip U2, PWM to input voltage
Control chip U2 begins to work and sends out drive signal, the auxiliary winding voltage Jing diodes of isolating transformer T2 to switching tube Q2
Pwm chip U2 is supplied after D12 rectifications, to maintain pwm chip U2 to work on, is so just realized by battery list
First 200 unlatching ups system and the function of not affecting city to electrically activate.
In embodiments of the present invention, DSP controls are further connected with the pwm chip U1 of the first isolated variable unit 110
Device, it is therefore an objective to the first isolated variable unit 110 can be closed after ups system completes battery cold start-up, it is ensured that system is normal
Operation.
3rd embodiment
As shown in figure 5, in embodiments of the present invention, and unlike second embodiment, first in the embodiment of the present invention
Isolated variable unit 110 is positive activation type isolated converter.
In embodiments of the present invention, the first isolated variable unit 110 is by positive activation type isolating transformer T1, switching tube Q1, PWM
The major parts such as control chip U1, diode D6 and first voltage feedback network are constituted.Wherein, the first isolated variable unit 110
Input terminate to the positive and negative electrode of battery unit 200, the switching tube of the voltage Jing pwm chips U1 controls of battery unit 200
The first DC voltage of certain voltage value, such as 200V, the first direct current is exported after Q1 copped waves by the first isolated variable unit 110
Press Jing after the process of first voltage feedback network and deliver to the pwm chip U1 of the first isolated variable unit 110, as the first isolation
110 output voltage feedback signal of converter unit, is not higher than the first direct current with the voltage for keeping the output of the first isolated variable unit 110
Voltage, corresponding for being not higher than 200V here, the voltage Jing joining units 120 of the output of the first isolated variable unit 110, with second
The input voltage of input 122, the 3rd input 123 and the 4th input 124 is connected to the second isolated variable unit after converging
130 input.
Fourth embodiment
As shown in fig. 6, in embodiments of the present invention, and unlike second and third embodiment, in the embodiment of the present invention
One isolated variable unit 110 is semibridge system isolated converter.
In embodiments of the present invention, by semibridge system isolating transformer T1, switching tube Q1 and switching tube Q3, pwm chip
U1, diode D6 and the major part such as diode D13 and first voltage feedback network composition.Wherein, the first isolated variable unit
110 input terminates to the positive and negative electrode of battery unit 200, the voltage Jing pwm chips U1 controls of battery unit 200 by
The half bridge converter that switching tube Q1 and switching tube Q3 is constituted after switch change-over, is exported by the first isolated variable unit 110 in turn
First DC voltage, such as 200V, the first DC voltage deliver to the first isolated variable list Jing after the process of first voltage feedback network
The pwm chip U1 of unit 110, as 110 output voltage feedback signal of the first isolated variable unit, to keep the first isolation to become
The voltage for changing the output of unit 110 is not higher than the first DC voltage, and here for being not higher than 200V, the first isolated variable unit 110 is defeated
The voltage Jing joining units 120 for going out, the input voltage with the second input 122, the 3rd input 123 and the 4th input 124
The input of the second isolated variable unit 130 is connected to after convergence.
5th embodiment
As shown in fig. 7, in embodiments of the present invention, from second and third, unlike four embodiments, in the embodiment of the present invention
The first isolated variable unit 110 be full-bridge type isolated converter.
In embodiments of the present invention, by full-bridge type isolating transformer T1, switching tube Q1, switching tube Q3, switching tube Q4 with open
Close pipe Q5, pwm chip U1, diode D6 and the major part such as diode D13 and first voltage feedback network composition.Its
In, the input of the first isolated variable unit 110 terminates to the positive and negative electrode of battery unit 200, the voltage Jing PWM of battery unit 200
After the full-bridge converter conversion by switching tube Q1, switching tube Q3, switching tube Q4 and switching tube Q5 composition of control chip U1 controls,
First DC voltage of 200V is exported by the first isolated variable unit 110, at the first DC voltage Jing first voltage feedback networks
The pwm chip U1 of the first isolated variable unit 110 is delivered to after reason, it is anti-as 110 output voltage of the first isolated variable unit
Feedback signal, is not higher than the first DC voltage with the voltage for keeping the output of the first isolated variable unit 110, corresponding for not high here
In 200V, the voltage Jing joining units 120 of the output of the first isolated variable unit 110, with the second input 122, the 3rd input
123 and the 4th input 124 input voltage converge after be connected to the input of the second isolated variable unit 130.
The UPS cold start-up circuits that above-mentioned several inventive embodiments are provided, by the first isolated variable unit by battery unit
DC voltage input joining unit in, joining unit will be the DC voltage of battery unit defeated with other inputs of joining unit
The voltage for entering is exported after being collected to the second isolated variable unit, with the system voltage being transformed into needed for ups system work；This
The output end of the negative pole and ups system of battery unit and civil power zero line are carried out electrical isolation by invention, by the electric energy of battery unit
The system power supply being converted into needed for ups system work, realizes starting the function of ups system without civil power from battery unit, while and
Do not affect civil power to directly initiate UPS, circuit structure is simple, it is easy to realize, cost is relatively low, and made by electrical isolation setting
Ups system runs more secure, reliable.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of UPS cold start-ups circuit, the UPS cold start-ups circuit are connected with battery unit and ups system load unit, and which is special
Levy and be, including：
First isolated variable unit, joining unit, and the second isolated variable unit；
The input of the first isolated variable unit is connected with the battery unit；
The joining unit has and can be input into multiple inputs of supply voltage, the output end of the first isolated variable unit with
First input end in multiple inputs of the joining unit is connected；
The input of the second isolated variable unit is connected with the output end of the joining unit, the second isolated variable list
The output end of unit is connected with the ups system load unit.
2. UPS cold start-ups circuit as claimed in claim 1, it is characterised in that in multiple inputs of the joining unit also
Including：
The second input being connected with civil power main line；
The 3rd input being connected with civil power bypass；And
The 4th input being connected with positive bus-bar.
3. UPS cold start-ups circuit as claimed in claim 2, it is characterised in that the first input end, the second input,
Three inputs, and the 4th input is with the common port being connected with zero line.
4. UPS cold start-ups circuit as claimed in claim 3, it is characterised in that when the UPS cold start-ups circuit works, described
After the voltage that the battery unit is exported by the first isolated variable unit carries out conversion process, by the first input end be input into
The joining unit, and be input into the electricity of the joining unit by second input, the 3rd input or the 4th input
After pressure collects, it is input into the second isolated variable unit and is processed；The second isolated variable unit will process what is obtained
Dc source is exported to the ups system load unit.
5. UPS cold start-up circuits as described in Claims 1 to 4 any one, it is characterised in that the first isolated variable list
Unit includes：Inverse-excitation type isolating transformer T1, switching tube Q1, pwm chip U1, diode D6, first voltage feedback network；
The input of the first isolated variable unit terminates to the positive and negative electrode of the battery unit, through diode D1, the electricity
It is after the switching tube Q1 copped waves of pwm chip U1 controls described in of the voltage of pool unit, defeated by the first isolated variable unit
Go out the first DC voltage, first DC voltage delivers to the PWM controls core described in after first voltage feedback network is processed
Piece U1, used as the feedback signal of the first isolated variable unit output voltage；The electricity of the first isolated variable unit output
Joining unit described in pressure Jing, with being followed by that the input voltage of second input, the 3rd input and the 4th input collects
To the input of the second isolated variable unit.
6. UPS cold start-ups circuit as claimed in claim 5, it is characterised in that the first isolated variable unit also includes：
For starting the switch SW1 of the first isolated variable cell operation；And
It is connected with the pwm chip U1 of the first isolated variable unit, the first isolated variable unit can be closed
Dsp controller.
7. UPS cold start-up circuits as described in Claims 1 to 4 any one, it is characterised in that the second isolated variable list
Unit includes：Resistance R4, isolating transformer T2, switching tube Q2, pwm chip U2 and second voltage feedback network, diode
D12；
When the input voltage of the second isolated variable unit delivers to pwm chip U2 after resistance R4, controlled by the PWM
The second DC voltage, the auxiliary winding voltage Jing diodes of isolating transformer T2 are exported after the switching tube Q2 copped waves of coremaking piece U2 controls
Pwm chip U2 is supplied after D12 rectifications, to maintain pwm chip U2 to work on；Second DC voltage has many
Road export, second DC voltage wherein all the way voltage described in second voltage feedback network process after deliver to described second
The pwm chip U2 of isolated variable unit, used as the output voltage feedback signal of the second isolated variable unit.
8. UPS cold start-up circuits as described in Claims 1 to 4 any one, it is characterised in that the first isolated variable list
Unit includes：Positive activation type isolating transformer T1, switching tube Q1, pwm chip U1, diode D6 and first voltage feedback network；
The input of the first isolated variable unit terminates to the positive and negative electrode of the battery unit, the voltage of the battery unit
The first DC voltage is exported by the first isolated variable unit Jing after the switching tube Q1 copped waves of pwm chip U1 controls, the
One DC voltage delivers to the pwm chip U1 of the first isolated variable unit Jing after the process of first voltage feedback network, makees
For the output voltage feedback signal of the first isolated variable unit, the voltage of the first isolated variable unit output is made to be not higher than the
One DC voltage, joining unit described in the voltage Jing of the first isolated variable unit output, with second input, the 3rd
The input voltage of input and the 4th input is connected to the input of the second isolated variable unit after converging.
9. UPS cold start-up circuits as described in Claims 1 to 4 any one, it is characterised in that the first isolated variable list
Unit includes：Semibridge system isolating transformer T1, switching tube Q1 and switching tube Q3, pwm chip U1 diodes D13 and first voltage
Feedback network；
The input of the first isolated variable unit terminates to the positive and negative electrode of the battery unit, the voltage of the battery unit
Jing after the half bridge converter being made up of switching tube Q1 and switching tube Q3 that pwm chip U1 is controlled in turn switch change-over, by
First isolated variable unit exports the first DC voltage, and the first DC voltage delivers to first Jing after the process of first voltage feedback network
The pwm chip U1 of isolated variable unit, as the first isolated variable unit output voltage feedback signal, with keep first every
The first DC voltage, the voltage Jing joining units of the first isolated variable unit output are not higher than from the voltage of converter unit output
120, described second is connected to after converging with the input voltage of second input, the 3rd input and the 4th input isolate
The input of converter unit.
10. UPS cold start-up circuits as described in Claims 1 to 4 any one, it is characterised in that first isolated variable
Unit includes：Full-bridge type isolating transformer T1, switching tube Q1, switching tube Q3, switching tube Q4 and switching tube Q5, pwm chip
U1, diode D6 and diode D13 and first voltage feedback network；
The input of the first isolated variable unit terminates to the positive and negative electrode of the battery unit, the voltage of the battery unit
The full-bridge converter change being made up of switching tube Q1, switching tube Q3, switching tube Q4 and switching tube Q5 of Jing pwm chips U1 controls
After changing, the first DC voltage is exported by the first isolated variable unit, at the first DC voltage Jing first voltage feedback networks
The pwm chip U1 of the first isolated variable unit is delivered to after reason, as the output electricity of the first isolated variable unit
Pressure feedback signal, makes the voltage of the first isolated variable unit output be not higher than the first DC voltage, and first isolation becomes
Joining unit described in the control source of unit output is changed, it is defeated with second input, the 3rd input and the 4th input
Enter after voltage is converged and be input into the input of the second isolated variable unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610910687.1A CN106532909A (en) | 2016-10-19 | 2016-10-19 | UPS (Uninterruptible Power Supply) cold-start circuit |
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| CN201610910687.1A CN106532909A (en) | 2016-10-19 | 2016-10-19 | UPS (Uninterruptible Power Supply) cold-start circuit |
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| CN106532909A true CN106532909A (en) | 2017-03-22 |
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| CN201610910687.1A Pending CN106532909A (en) | 2016-10-19 | 2016-10-19 | UPS (Uninterruptible Power Supply) cold-start circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193921A (en) * | 2018-09-27 | 2019-01-11 | 深圳市英威腾电源有限公司 | A kind of cold start-up circuit and device for UPS host |
| CN110311540A (en) * | 2019-07-22 | 2019-10-08 | 珠海格力电器股份有限公司 | A kind of isolation control circuit, frequency converter and air-conditioning |
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| US5172009A (en) * | 1991-02-25 | 1992-12-15 | Regents Of The University Of Minnesota | Standby power supply with load-current harmonics neutralizer |
| CN1482718A (en) * | 2002-09-11 | 2004-03-17 | 艾默生网络能源有限公司 | Parallel uninterrupted power source system and starting method thereof |
| CN204794705U (en) * | 2015-07-17 | 2015-11-18 | 西安科技大学 | Multiplexed output flyback converter of uninterrupted power supply |
| CN204928349U (en) * | 2015-08-18 | 2015-12-30 | 厦门高瑞特电气自动化有限公司 | Automatic uninterrupted power source device of monocell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5172009A (en) * | 1991-02-25 | 1992-12-15 | Regents Of The University Of Minnesota | Standby power supply with load-current harmonics neutralizer |
| CN1482718A (en) * | 2002-09-11 | 2004-03-17 | 艾默生网络能源有限公司 | Parallel uninterrupted power source system and starting method thereof |
| CN204794705U (en) * | 2015-07-17 | 2015-11-18 | 西安科技大学 | Multiplexed output flyback converter of uninterrupted power supply |
| CN204928349U (en) * | 2015-08-18 | 2015-12-30 | 厦门高瑞特电气自动化有限公司 | Automatic uninterrupted power source device of monocell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193921A (en) * | 2018-09-27 | 2019-01-11 | 深圳市英威腾电源有限公司 | A kind of cold start-up circuit and device for UPS host |
| CN110311540A (en) * | 2019-07-22 | 2019-10-08 | 珠海格力电器股份有限公司 | A kind of isolation control circuit, frequency converter and air-conditioning |
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Inventor after: Wen Yang Inventor after: You Yong Inventor after: Xia Xiaorong Inventor after: Wang Xinghong Inventor after: Li Quandong Inventor before: Wen Yang Inventor before: Xia Xiaorong Inventor before: Wang Xinghong Inventor before: Li Quandong |
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Application publication date: 20170322 |