CN106487239A - A kind of auxiliary power circuit of high voltage converter - Google Patents
A kind of auxiliary power circuit of high voltage converter Download PDFInfo
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- CN106487239A CN106487239A CN201510548789.9A CN201510548789A CN106487239A CN 106487239 A CN106487239 A CN 106487239A CN 201510548789 A CN201510548789 A CN 201510548789A CN 106487239 A CN106487239 A CN 106487239A
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Abstract
The present invention provides a kind of auxiliary power circuit of high voltage converter to include two alternating current input power supplyings, two rectification circuits, filtering energy-storage travelling wave tube, two power-switching circuits, wherein：Each alternating current input power supplying is connected with rectification circuit, alternating current input power supplying output AC electricity, and rectified circuit rectifies are unidirectional current and export；The outfan of two rectification circuits is connected in parallel, and this outfan is connected formation the first loop with described filtering energy-storage travelling wave tube, carries out energy storage and filtering by described filtering energy-storage travelling wave tube to the unidirectional current that outfan exports；Described filtering energy-storage travelling wave tube is connected formation loop respectively with described two power-switching circuits, and described power-switching circuit is used for respectively the unidirectional current at filtering energy-storage travelling wave tube two ends being converted to alternating voltage；The outfan of two power-switching circuits is connected with load respectively, simultaneously to load supplying.The present invention it is ensured that do not have the situation of power down to occur when power supply switches, realizes seamless switching on the basis of reducing power supply cost.
Description
Technical field
The present invention relates to Power Management Design technical field, the accessory power supply electricity of more particularly, to a kind of high voltage converter
Road.
Background technology
The auxiliary power circuit of high voltage converter, primarily to power to the master control system of high voltage converter.
In order to ensure the reliability that in existing high voltage converter system, master control system is powered, need two-way power supply to auxiliary
Power circuit is powered, so there is 380V civil power and 6kV/10kV high pressure by assists winding
There is provided 380V power supply to switch mutually, by auxiliary power circuit, master control system is carried out with the problem of joint power supply.
Mainly there is below scheme at present：
Using primary power source, primary power source refer to by 380V be transformed into nominal value be 48V unidirectional current, one
The inlet wire of secondary source adopt high-low pressure cold standby mode, the program need high-low pressure switching contactor, testing circuit,
The coherent signals such as capacitor batteries and device, 380V civil power and 6kV/10kV high pressure are provided by assists winding
380V power supply is connected to primary power source by high-low pressure switching contactor, using testing circuit to this two-way electricity
Source is detected, notice master control system during a certain road power failure is detected, sends out control by master control system
Signal controls high-low pressure switching contactor, is switched to another road power supply and primary power source is powered.
In the program, testing circuit detection relay in parallel specifically in 380V city The electric loop, by inspection
Survey relay whether powered to judge 380V city The electric loop, thus choosing whether to switch power supply, this is just
Exist one from execution is detected again to the time of switching, because this time is longer, in order to ensure master control
System not power down also needs to be supported using accumulator or electric capacity, occupies multiple electrical equipments so that cutting
Change unstable, high cost.
Content of the invention
The present invention provides a kind of auxiliary power circuit of high voltage converter, on the basis reducing power supply cost
Above it is ensured that do not have the situation of power down to occur when power supply switches, realize seamless switching.
A kind of auxiliary power circuit of high voltage converter, including the first alternating current input power supplying, the second exchange input
Power supply, the first rectification circuit, the second rectification circuit, filtering energy-storage travelling wave tube, the first power-switching circuit and the
Two power-switching circuits, wherein：
Described first alternating current input power supplying is connected with described first rectification circuit, described first alternating current input power supplying
Output AC electricity, and exports for unidirectional current through described first rectifier circuit rectifies；
Described second alternating current input power supplying is connected with described second rectification circuit, described second alternating current input power supplying
Output AC electricity, and exports for unidirectional current through described second rectifier circuit rectifies；
The outfan of described first rectification circuit is connected in parallel with the outfan of described second rectification circuit, and should
Outfan is connected formation the first loop with described filtering energy-storage travelling wave tube, by described filtering energy-storage travelling wave tube to outfan
The unidirectional current of output carries out energy storage and filtering；
Described filtering energy-storage travelling wave tube is connected formation second servo loop, respectively with institute with described first power-switching circuit
State second source change-over circuit and connect formation tertiary circuit, described first power-switching circuit and second source turn
Change circuit for respectively the unidirectional current at filtering energy-storage travelling wave tube two ends being converted to alternating voltage；
The outfan of described first power-switching circuit and second source change-over circuit is connected with load respectively, with
Simultaneously to load supplying.
Preferably, the voltage of described first alternating current input power supplying is 220V, described second alternating current input power supplying
Voltage be 220V, described second alternating current input power supplying provides by high-tension transformer assists winding, and first
The voltage-phase of alternating current input power supplying and the second alternating current input power supplying is identical；
Described first alternating current input power supplying is the 380V power supply being provided by civil power, the second alternating current input power supplying
The 380V power supply that provided by assists winding for the high pressure that high voltage converter produces of voltage.
Preferably, described first rectification circuit and/or the second rectification circuit are rectifier bridge；Or
Described first rectification circuit and/or the second rectification circuit are the rectification circuit being made up of four diodes.
Preferably, described filtering energy-storage travelling wave tube is a capacity cell, or the capacity cell for two series connection.
Preferably, when described filtering energy-storage travelling wave tube is the capacity cell of two series connection, this circuit also includes：
It is connected in the equalizing resistance at the two ends of each capacity cell in parallel.
Preferably, described first power-switching circuit or second source change-over circuit include pwm chip,
First switch pipe, second switch pipe and transformator, wherein：
Described transformator includes a former limit and at least one secondary, and the first input end of former limit is through first switch
Pipe is connected with one end of filtering energy-storage travelling wave tube, and the second input of former limit is through second switch pipe and filtering energy storage unit
The other end of part connects；
Described first switch pipe is connected with the two ends of described pwm chip, filtering energy-storage travelling wave tube respectively；
Described second switch pipe is connected with the two ends of described pwm chip, filtering energy-storage travelling wave tube respectively；
Described PWM chip, controls first switch pipe K1 conducting or pass by sending pwm pulse signal
Disconnected, control second switch pipe K2 to turn off or turn on；
The voltage that described transformator is used for inputting former limit is delivered to each secondary and exports.
Preferably, described transformator includes multiple secondary, and the plurality of secondary is mutually isolated mode, or is
Non-isolated multi-tap mode.
Preferably, the outfan of described first power-switching circuit and second source change-over circuit is respectively through one
It is connected with load with the diode of connected in series with the load.
Preferably, the outfan of described first power-switching circuit and second source change-over circuit is all connected with one
The capacity cell in parallel with load.
Preferably, the first lightning protection circuit and the first EMC filter circuit, the second lightning protection circuit and are also included
Two EMC filter circuit, wherein：
After described first lightning protection circuit and the first EMC filter circuit are connected in series, it is connected to the first exchange defeated
Enter between power supply and the first rectification circuit；
After described second lightning protection circuit and the second EMC filter circuit are connected in series, it is connected to the second exchange defeated
Enter between power supply and the second rectification circuit.
The auxiliary power circuit of the high voltage converter being provided using the present invention, specifically following technique effect：
1) compared to original electric power system, significantly simplify on power supply circuits are constituted, eliminate height
The catalyst of low pressure switching, battery or electric capacity for maintaining switching time, save the time of power supply switching
Required electrical equipment；
2) due to employing rectification circuit stepmother's line parallel current source mode, the greatly system power supply of raising
Reliability；
3) due to employing the Redundancy Design of Hot Spare, system can be supplied to load by two-way power sources in parallel simultaneously
Electricity, it is ensured that not having when power supply switches when any one road power failure or power supply are lost
The situation having power down occurs, and realizes seamless switching, improves the reliability of power supply.
Brief description
The circuit diagram of the auxiliary power circuit of the high voltage converter that Fig. 1 provides for the embodiment of the present invention 1；
The circuit diagram of the auxiliary power circuit of the high voltage converter that Fig. 2 provides for the embodiment of the present invention 2；
The circuit diagram of the auxiliary power circuit of the high voltage converter that Fig. 3 provides for the embodiment of the present invention 3.
Specific embodiment
With reference to the accompanying drawings and examples the auxiliary power circuit of the high voltage converter that the present invention provides is carried out
Explain.
The present invention provides a kind of auxiliary power circuit of high voltage converter, including the first alternating current input power supplying, the
Two alternating current input power supplyings, the first rectification circuit, the second rectification circuit, filtering energy-storage travelling wave tube, the first power supply turn
Change circuit and second source change-over circuit, wherein：
Described first alternating current input power supplying is connected with described first rectification circuit, described first alternating current input power supplying
Output AC electricity, and exports for unidirectional current through described first rectifier circuit rectifies；
Described second alternating current input power supplying is connected with described second rectification circuit, described second alternating current input power supplying
Output AC electricity, and exports for unidirectional current through described second rectifier circuit rectifies；
The outfan of described first rectification circuit is connected in parallel with the outfan of described second rectification circuit, and should
Outfan is connected formation the first loop with described filtering energy-storage travelling wave tube, by described filtering energy-storage travelling wave tube to outfan
The unidirectional current of output carries out energy storage and filtering；
Described filtering energy-storage travelling wave tube is connected formation second servo loop, respectively with institute with described first power-switching circuit
State second source change-over circuit and connect formation tertiary circuit, described first power-switching circuit and second source turn
Change circuit for respectively the unidirectional current at filtering energy-storage travelling wave tube two ends being converted to alternating voltage；
The outfan of described first power-switching circuit and second source change-over circuit is connected with load respectively, with
Simultaneously to load supplying.
The power supply circuits of the embodiment of the present invention adopt the new technique of new hot standby seamless switching original to replace
Electric power system, compared to original electric power system, significantly simplifies on power supply circuits are constituted, eliminates
The catalyst of high-low pressure switching, for maintaining battery or the electric capacity of switching time, save power supply switching when
Between required electrical equipment；Simultaneously to load supplying, therefore improve power supply due to using double loop power supply
Reliability；Due to employing rectifier bridge stepmother's line parallel current source mode, the great system power supply improving
Reliability.
Preferably, the voltage of described first alternating current input power supplying is 220V, described second alternating current input power supplying
Voltage be 220V, described second alternating current power supply carries by the assists winding of rectifier transformer in high voltage converter
For, and the voltage-phase of the first alternating current input power supplying and the second alternating current input power supplying is identical, if not connecing phase place
Identical, arise that input voltage be not 220V but line voltage and lead to back device failure；
Described first alternating current input power supplying is the 380V power supply being provided by civil power, the second alternating current input power supplying
The 380V power supply that provided by assists winding for the high pressure that high voltage converter produces of voltage.Using 380V
During power supply, two-way power supply can with phase place identical it is also possible to not phase place identical.
Preferably, described first rectification circuit and/or the second rectification circuit are rectifier bridge；Or
Described first rectification circuit and/or the second rectification circuit are the rectification circuit being made up of four diodes.
Certainly, rectification circuit can also be that other has the rectification circuit of rectified action.
Preferably, described filtering energy-storage travelling wave tube is a capacity cell, or the capacity cell for two series connection.
The outfan of two rectification circuits is in parallel, and that is, the bus of two rectification circuits is in parallel, using filter after parallel connection
Ripple energy-storage travelling wave tube carries out energy storage, when busbar voltage is relatively low, can adopt a capacity cell, in bus electricity
When pressure is higher, in order to prevent bus capacitor of breaking, using the capacity cell of two series connection.
Preferably, when described filtering energy-storage travelling wave tube is the capacity cell of two series connection, in order to prevent two electric capacity
Unbalanced-voltage-division increases equalizing resistance, and this circuit also includes：Be connected in parallel each capacity cell two ends equal
Piezoresistance, its Main Function is that electric capacity is all pressed.
Preferably, described first power-switching circuit or second source change-over circuit include pwm chip,
First switch pipe, second switch pipe and transformator, wherein：
Described transformator includes a former limit and at least one secondary, and the first input end of former limit is through first switch
Pipe is connected with one end of filtering energy-storage travelling wave tube, and the second input of former limit is through second switch pipe and filtering energy storage unit
The other end of part connects；
Described first switch pipe is connected with the two ends of described pwm chip, filtering energy-storage travelling wave tube respectively；
Described second switch pipe is connected with the two ends of described pwm chip, filtering energy-storage travelling wave tube respectively；
Described PWM chip, controls first switch pipe K1 conducting or pass by sending pwm pulse signal
Disconnected, control second switch pipe K2 to turn off or turn on；
The voltage that described transformator is used for inputting former limit is delivered to each secondary and exports.
The effect of the first power-switching circuit and second source change-over circuit is that unidirectional current is converted to square waveform
The alternating current of formula, specific circuit is not limited to adopt said structure.
Preferably, described transformator includes multiple secondary, and the plurality of secondary is mutually isolated mode, that is, many
Individual secondary is mutually isolated, or is non-isolated multi-tap mode, and that is, multiple secondary are to be produced by multiple taps
Give birth to but not mutually isolated.
Preferably, the outfan of described first power-switching circuit and second source change-over circuit is respectively through one
It is connected with load with the diode of connected in series with the load.
Preferably, the outfan of described first power-switching circuit and second source change-over circuit connects one respectively
The individual capacity cell in parallel with load.
Preferably, in order to increase the stability of power supply further, the auxiliary power circuit that the present invention provides also wraps
Include the first lightning protection circuit and the first EMC filter circuit, the second lightning protection circuit and the second EMC filter circuit,
Wherein：
After described first lightning protection circuit and the first EMC filter circuit are connected in series, it is connected to the first exchange defeated
Enter between power supply and the first rectification circuit；
After described second lightning protection circuit and the second EMC filter circuit are connected in series, it is connected to the second exchange defeated
Enter between power supply and the second rectification circuit.
The preferred embodiment of the auxiliary power circuit of high voltage converter of present invention offer is provided.
Embodiment 1
As shown in figure 1, the first alternating current input power supplying is the 380V power supply being provided by civil power, the second exchange
The 380V power supply that the voltage of input power is provided by assists winding for the high pressure that high voltage converter produces, two
Individual 380V power supply can be three-phase four-wire system.
For each road power supply, first it is input to EMC filter circuit again through lightning protection circuit and is filtered, filtering
After be input to rectification circuit and carry out output AC electricity after rectification.
Rectification circuit is specially the rectification circuit that is made up of four diodes, diode D1 in such as Fig. 1,
D2, D3 and D4 constitute the first rectification circuit, and diode D5, D6, D7 and D8 in Fig. 1 constitute the
Two rectification circuits.The effect of the first rectification circuit/the second rectification circuit is that alternating current is converted to unidirectional current,
For 380V power supply, the 583V unidirectional current of output after rectification.
The bus of two rectification circuits is directly in parallel, i.e. the outfan of the first rectification circuit and the second rectification circuit
It is connected in parallel, connect filter capacitor element afterwards and form loop.
Because busbar voltage is higher in the present embodiment, therefore adopt the first electric capacity C1 and the second electric capacity C2 string
Connection, and two capacitance partial pressures are uneven to increase the first equalizing resistance L1, the second equalizing resistance L2 in order to prevent,
First equalizing resistance L1 is connected in parallel with the first electric capacity C1, the second equalizing resistance L2 and the second electric capacity C2
It is connected in parallel.
The two ends filtering energy-storage travelling wave tube in the present embodiment connect the first power-switching circuit and second source respectively
Change-over circuit, DC voltage is converted to the alternating voltage of square, as shown in figure 1, the first power supply turns
Change circuit and include pwm chip, switching tube K1, switching tube K2 and transformator, second source is changed
Circuit PWM control chip, switching tube K3, switching tube K4 and transformator, switching tube K1 is respectively with
Pwm chip in one power-switching circuit, the two ends of filtering energy-storage travelling wave tube connect, switching tube K2
It is connected with the two ends of the pwm chip in the first power-switching circuit, filtering energy-storage travelling wave tube respectively；Open
Close pipe K3 respectively with second source change-over circuit in pwm chip, filtering energy-storage travelling wave tube two ends
Connect, switching tube K4 respectively with the first power-switching circuit in pwm chip, filtering energy storage unit
The two ends of part connect.
Switching tube can be, but not limited to adopt metal-oxide-semiconductor.
Transformator in first power-switching circuit in the present embodiment includes a former limit and a secondary, former limit
First input end through switching tube K1 with filtering energy-storage travelling wave tube one end be connected, the second input warp of former limit
Switching tube K2 is connected with the other end of filtering energy-storage travelling wave tube.
Transformator in second source change-over circuit in the present embodiment includes a former limit and a secondary, former limit
First input end through switching tube K3 with filtering energy-storage travelling wave tube one end be connected, the second input warp of former limit
Switching tube K4 is connected with the other end of filtering energy-storage travelling wave tube.
PWM chip in first power-switching circuit, by sending pwm pulse signal controlling switch pipe K1
On or off, controlling switch pipe K2 turns off or turns on, thus controlling the voltage that former limit is inputted by transformator
It is delivered to secondary and export.
PWM chip in second source change-over circuit, by sending pwm pulse signal controlling switch pipe K3
On or off, controlling switch pipe K4 turns off or turns on, thus controlling the voltage that former limit is inputted by transformator
It is delivered to secondary and export.
As shown in figure 1, in the first power-switching circuit, connecting one end of former limit in switching tube K1, also
Can be connected with one end of filtering energy-storage travelling wave tube by diode d1, connect one end of former limit in switching tube K2,
Can also be connected with one end of filtering energy-storage travelling wave tube by diode d2.In second source change-over circuit,
Connect one end of former limit in switching tube K1, can also be connected by one end of diode d4 and filtering energy-storage travelling wave tube
Connect, connect one end of former limit in switching tube K4, can also be by diode d5 and the one of filtering energy-storage travelling wave tube
End connects.Diode d1, d2 are clamp diodes, when backward voltage is higher work, by switching tube K1,
The backward voltage of K2 is limited under busbar voltage, prevent damage metal-oxide-semiconductor be mode be lost switching tube K1,
K2.Diode d4, d5 are clamp diodes, when backward voltage is higher work, by switching tube K3,
The backward voltage of K4 is limited under busbar voltage, prevent damage metal-oxide-semiconductor be mode be lost switching tube K3,
K4.
In the first power-switching circuit, the secondary of transformator can first connect one with connected in series with the load
Diode d3, reconnects a capacity cell with load parallel connection, in second source change-over circuit,
The secondary of transformator can first connect a diode d6 with connected in series with the load, reconnects one and load
The capacity cell being connected in parallel.
Preferably, the outfan of the first power-switching circuit is through a diode d7 with connected in series with the load
It is connected with load, the outfan of second source change-over circuit is through a diode d8 with connected in series with the load
It is connected with load.
The outfan of the first power-switching circuit and second source change-over circuit, before connecing load, is all connected with one
The individual capacity cell C3 in parallel with load.
Outfan is the voltage of C3 two ends output can be any voltage value, currently without set-point, C3's
Effect is filtering, energy storage.
In the embodiment of the present invention, civil power 380Vac and pair are the separate power supply of two-way around 380Vac, point
Not through two rectification circuits, the bus after rectification is directly in parallel, and the power sources in parallel of two-way independence is after rectification
Bus on, the output of double switch power supply uses diode standby each other, and double loop power supply supplies to load simultaneously
Electricity, can achieve no-harass switch in a certain road power failure it is ensured that controlling stablizing of power supply.
Embodiment 2
The embodiment of the present invention is with the difference of embodiment 1, and in transformator, the quantity of secondary is 2, such as schemes
Shown in 2, wherein K1 is transformer primary side, K2 is transformer secondary circuit, and K3 is the hot redundancy of diode
Output circuit.I.e. when transformator has multiple secondary, one of first power-switching circuit secondary and second
One of power-switching circuit secondary is simultaneously connected with load through diode.For the power supply with multiple secondary
Change-over circuit, it is possible to achieve for multiple load supplyings.
The circuit quantity of K2 can be 1,2,3 etc..
Can be non-isolated multi-tap mode between K2 circuit it is also possible to the mode that is mutually isolated, this reality
Apply example and adopt mutually isolated mode.
Bus capacitor serial number determines, the present embodiment is also using two according to the busbar voltage after rectifier bridge
Capacitances in series.
Essentially identical with embodiment 1 work process in the present embodiment, the quantity simply exporting can be 2,
I will not elaborate for concrete power supply process.
Embodiment 3
As shown in figure 3, the present embodiment is with the difference of embodiment 2, the first alternating current input power supplying is to pass through
The 220V power supply that civil power provides, the voltage of the second alternating current input power supplying leads to for the high pressure that high voltage converter produces
Cross the 220V power supply of assists winding offer, two 220V power supplys must be phase place same power supplies.Filter bank
Can element be a capacity cell, and not need in electric capacity two ends parallel resistance.
Two-way power supply bus after lightning protection circuit and rectification circuit is directly in parallel, and on bus, voltage is 450V,
Because busbar voltage is relatively low, electric capacity is commonly used using below 450V, be originally directly parallel in current source bus
High frequency transformer output export to load after two diodes in parallels.
Wherein K1 is high frequency transformer former limit, K2 is high frequency transformer secondary circuit, and K3 is diode heat
Redundant output circuit.
The circuit quantity of K2 can be 1,2,3 ..., and in the present embodiment, the quantity of K2 is 2.
Preferably, can between two-way power output end analogue detection circuitry in parallel, with split in real time powered-down
The state in source is detected, the malfunction of two Switching Power Supply outputs is passed through and is supplied to high-pressure frequency-conversion behind the door
The master control of device, if certain switchs certain road broken down, measure loop will send fault-signal to master control,
Alarm is provided or protects.
The embodiment that the present invention provides, significantly simplifies on system is constituted.Eliminate high-low pressure switching
Catalyst, battery or electric capacity for maintaining switching time, save the electricity required for the time of power supply switching
Gas element.Due to employing rectifier bridge stepmother's line parallel current source mode, the great system power supply improving
Reliability.Due to employing the Redundancy Design of Hot Spare, system can be supplied to load by two-way power sources in parallel simultaneously
Electricity, it is ensured that not having when power supply switches when any one road power failure or power supply are lost
The situation having power down occurs, and realizes seamless switching.Using this system on the basis of reducing system cost,
Improve the reliability of system simultaneously.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these changes and modification.
Claims (10)
1. a kind of auxiliary power circuit of high voltage converter is it is characterised in that include the first exchange input electricity
Source, the second alternating current input power supplying, the first rectification circuit, the second rectification circuit, filtering energy-storage travelling wave tube, first
Power-switching circuit and second source change-over circuit, wherein：
Described first alternating current input power supplying is connected with described first rectification circuit, described first alternating current input power supplying
Output AC electricity, and exports for unidirectional current through described first rectifier circuit rectifies；
Described second alternating current input power supplying is connected with described second rectification circuit, described second alternating current input power supplying
Output AC electricity, and exports for unidirectional current through described second rectifier circuit rectifies；
The outfan of described first rectification circuit is connected in parallel with the outfan of described second rectification circuit, and should
Outfan is connected formation the first loop with described filtering energy-storage travelling wave tube, by described filtering energy-storage travelling wave tube to outfan
The unidirectional current of output carries out energy storage and filtering；
Described filtering energy-storage travelling wave tube is connected formation second servo loop, respectively with institute with described first power-switching circuit
State second source change-over circuit and connect formation tertiary circuit, described first power-switching circuit and second source turn
Change circuit for respectively the unidirectional current at filtering energy-storage travelling wave tube two ends being converted to alternating voltage；
The outfan of described first power-switching circuit and second source change-over circuit is connected with load respectively, with
When to load supplying.
2. circuit as claimed in claim 1 it is characterised in that
The voltage of described first alternating current input power supplying is 220V, and the voltage of described second alternating current input power supplying is
220V, described second alternating current input power supplying is provided by the assists winding of rectifier transformer in high voltage converter, and
The voltage-phase of the first alternating current input power supplying and the second alternating current input power supplying is identical；
Described first alternating current input power supplying is the 380V power supply being provided by civil power, the second alternating current input power supplying
The 380V power supply that provided by assists winding for the high pressure that high voltage converter produces of voltage.
3. circuit as claimed in claim 1 it is characterised in that
Described first rectification circuit and/or the second rectification circuit are rectifier bridge；Or
Described first rectification circuit and/or the second rectification circuit are the rectification circuit being made up of four diodes.
4. circuit as claimed in claim 1 it is characterised in that
Described filtering energy-storage travelling wave tube is a capacity cell, or the capacity cell for two series connection.
5. circuit as claimed in claim 4 is it is characterised in that described filtering energy-storage travelling wave tube is two strings
During the capacity cell of connection, this circuit also includes：
It is connected in the equalizing resistance at the two ends of each capacity cell in parallel.
6. circuit as claimed in claim 1 is it is characterised in that described first power-switching circuit or
Two power-switching circuits include pwm chip, first switch pipe, second switch pipe and transformator, its
In：
Described transformator includes a former limit and at least one secondary, and the first input end of former limit is through first switch
Pipe is connected with one end of filtering energy-storage travelling wave tube, and the second input of former limit is through second switch pipe and filtering energy storage unit
The other end of part connects；
Described first switch pipe is connected with the two ends of described pwm chip, filtering energy-storage travelling wave tube respectively；
Described second switch pipe is connected with the two ends of described pwm chip, filtering energy-storage travelling wave tube respectively；
Described PWM chip, controls first switch pipe K1 conducting or pass by sending pwm pulse signal
Disconnected, control second switch pipe K2 to turn off or turn on；
The voltage that described transformator is used for inputting former limit is delivered to each secondary and exports.
7. circuit as claimed in claim 6 is it is characterised in that described transformator includes multiple secondary,
The plurality of secondary is mutually isolated mode, or is non-isolated multi-tap mode.
8. circuit as claimed in claim 1 is it is characterised in that described first power-switching circuit and
The outfan of two power-switching circuits is connected with load through a diode with connected in series with the load respectively.
9. circuit as claimed in claim 1 is it is characterised in that described first power-switching circuit and
The outfan of two power-switching circuits is all connected with a capacity cell in parallel with load.
10. circuit as claimed in claim 1 is it is characterised in that also include the first lightning protection circuit and first
EMC filter circuit, the second lightning protection circuit and the second EMC filter circuit, wherein：
After described first lightning protection circuit and the first EMC filter circuit are connected in series, it is connected to the first exchange defeated
Enter between power supply and the first rectification circuit；
After described second lightning protection circuit and the second EMC filter circuit are connected in series, it is connected to the second exchange defeated
Enter between power supply and the second rectification circuit.
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| CN201510548789.9A CN106487239A (en) | 2015-08-31 | 2015-08-31 | A kind of auxiliary power circuit of high voltage converter |
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| CN201510548789.9A CN106487239A (en) | 2015-08-31 | 2015-08-31 | A kind of auxiliary power circuit of high voltage converter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802484A (en) * | 2019-02-01 | 2019-05-24 | 深圳市库马克新技术股份有限公司 | A kind of power circuit of PWM Generator High Voltage Inverter Control System |
| CN111262455A (en) * | 2019-12-30 | 2020-06-09 | 航天信息股份有限公司 | Device and method for double-circuit equal-pressure switch of electronic equipment |
| CN111313398A (en) * | 2020-03-30 | 2020-06-19 | 广东美的暖通设备有限公司 | Power supply circuit and air conditioner |
| CN112737091A (en) * | 2020-12-30 | 2021-04-30 | 大禹电气科技股份有限公司 | High-voltage frequency converter and uninterrupted power supply system of high-voltage frequency converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802484A (en) * | 2019-02-01 | 2019-05-24 | 深圳市库马克新技术股份有限公司 | A kind of power circuit of PWM Generator High Voltage Inverter Control System |
| CN111262455A (en) * | 2019-12-30 | 2020-06-09 | 航天信息股份有限公司 | Device and method for double-circuit equal-pressure switch of electronic equipment |
| CN111313398A (en) * | 2020-03-30 | 2020-06-19 | 广东美的暖通设备有限公司 | Power supply circuit and air conditioner |
| CN112737091A (en) * | 2020-12-30 | 2021-04-30 | 大禹电气科技股份有限公司 | High-voltage frequency converter and uninterrupted power supply system of high-voltage frequency converter |
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Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Applicant after: Vitamin Technology Co., Ltd. Address before: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Applicant before: Aimosheng Network Energy Source Co., Ltd. |
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Application publication date: 20170308 |