CN102694477A - High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit - Google Patents
High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit Download PDFInfo
- Publication number
- CN102694477A CN102694477A CN2012101966778A CN201210196677A CN102694477A CN 102694477 A CN102694477 A CN 102694477A CN 2012101966778 A CN2012101966778 A CN 2012101966778A CN 201210196677 A CN201210196677 A CN 201210196677A CN 102694477 A CN102694477 A CN 102694477A
- Authority
- CN
- China
- Prior art keywords
- voltage
- low
- power supply
- power
- current power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 113
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 24
- 230000006837 decompression Effects 0.000 claims description 50
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000002955 isolation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000013332 literature search Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Landscapes
- Rectifiers (AREA)
Abstract
The invention relates to a high-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit which belongs to the technical field of electric appliance control power supplies. The circuit comprises a low-voltage alternating current power supply which is obtained by carrying out step-down on a high-voltage alternating current power supply by a depressurization capacitor, a low-voltage direct current power supply which is obtained by carrying out step-down and bridge rectifier on the high-voltage alternating current power supply by the depressurization capacitor, a voltage stabilizing circuit which is connected with the low-voltage direct current power supply, a high-voltage alternating current load control device and a control circuit of the control device. The high-voltage alternating current power supply is single-phase or three-phase four-wire. A capacitor is parallelly connected between the negative pole of the low-voltage direct current power supply and the alternating current input end of a rectifier bridge, and a voltage stabilizing diode is parallelly connected between the positive pole and the negative pole of the low-voltage direct current power supply. The circuit can meet the following requirements at the same time: low power consumption, small size, low cost and high efficiency; and the low-voltage direct current power supply, the low-voltage alternating current power supply and the high-voltage alternating current power supply can be common-base, or the control devices of the low-voltage direct current power supply, the low-voltage alternating current power supply and the high-voltage alternating current load can be common-base.
Description
Technical field
The invention belongs to the electrical equipment control power technique fields, be specifically related to low-voltage alternating current power supply and low-voltage dc power supply three power supplys circuit altogether that a kind of high-voltage ac power and its produces.
Background technology
In low-voltage electrical apparatus small-power phase control techniques, high-tension AC load often need be carried out control out of service or that put into operation according to various signals.The required low-voltage dc power supply of generation and processing control signals is obtained by all-wave or halfwave rectifier usually.Obtain this control and have four kinds with the method for low-voltage dc power supply: first kind is directly the high voltage AC power to be carried out rectification, through switch power technology high-voltage DC power supply is become low-voltage dc power supply again; Second kind is directly the high voltage AC power to be carried out rectification, obtains low-voltage dc power supply through resistance step-down and voltage stabilizing didoe (perhaps three-terminal voltage-stabilizing module) voltage stabilizing again; The third is first through rectification behind the capacitance decompression, again by resistance step-down and voltage stabilizing didoe (perhaps three-terminal voltage-stabilizing module) voltage stabilizing, obtains low-voltage dc power supply; The 4th kind be through the transformer step-down, after rectification, obtain low-voltage dc power supply.Under the less situation of the load current of the low-voltage dc power supply that control circuit is used,, should select the mode of rectification after the ac capacitor step-down in order to improve the conversion efficiency from the AC power to the low-voltage dc power supply.
Bidirectional thyristor is used as the high-voltage ac power load usually and puts into operation and the phased device of electric semiconductor out of service.The negative pole of the low-voltage dc power supply that the negative electrode of thyristor will be used with control circuit is connected together (or claiming that promptly two or more circuit modules have public tie point altogether).That can accomplish this point has halfwave rectifier and a transformer step-down rectifier.Halfwave rectifier capacitor step-down weak effect can not use, and can only use resistor step-down or the step-down of resistance capacitance parallel branch.Because of the loss of dropping resistor is bigger,, adopt the halfwave rectifier of resistor step-down inapplicable from the requirement that cuts down the consumption of energy.If adopt transformer step-down rectifier mode, because of the loss of transformer is bigger, neither the best-of-breed technology approach.Adopt capacitor step-down, can obtain low-voltage dc power supply through bridge-type or full-wave rectification again, but the negative pole of low-voltage dc power supply can not with the negative electrode of thyristor altogether.A kind of way altogether is, after low-voltage dc power supply, adopts the dc-isolation power supply again, make the low-voltage dc power supply after the isolation negative pole can with the negative electrode of thyristor altogether.But the efficient of insulating power supply is lower, and cost is higher.Thus, make control with the negative electrode of low-voltage dc power supply negative pole and thyristor altogether, have only the way of employing transformer step-down rectifier and low-voltage direct insulating power supply, the efficient of these two kinds of ways and cost are all than higher.
In order to regulate the power of high-voltage ac power load, perhaps make the load input of high-voltage ac power and out of service, adopt phase controlled thyristors usually.To reach the purpose of regulating the high-voltage ac power load through the on-delay angle of regulating thyristor; Just must obtain the frequency of high-voltage ac power and the signal at phase angle, therefore need low-voltage alternating current power supply with high-voltage ac power same frequency same-phase same waveform.Just when high efficiency obtains low-voltage dc power supply, also must obtain low-voltage alternating current power supply expeditiously with high-voltage ac power same frequency same-phase same waveform.
Further, the negative pole of the low-voltage dc power supply that also must use with control circuit from the signal of the low-voltage alternating current power supply of high-voltage ac power altogether so that control circuit obtains phase control signal.
Visible through above-mentioned analysis, and can realize economic and practical high quality control low-voltage electrical apparatus, circuit there is following requirement: the one, that power consumption is little, volume is little, cost is low; The 2nd, can obtain low-voltage dc power supply and low-voltage alternating current power supply expeditiously; The 3rd, low-voltage alternating current power supply and low-voltage dc power supply must can be altogether, so that produce phased signal; The 4th, low-voltage dc power supply, low-voltage alternating current power supply, high-voltage ac power three must be altogether, or the control device of low-voltage dc power supply, low-voltage alternating current power supply, the load of control high-voltage alternating must can be altogether.
Can satisfy the technological approaches of the 3rd and the 4th requirement at present, transformer mode and low-voltage direct insulating power supply mode are arranged, but volume of transformer be big, cost is high, and power consumption is big; The mode of low-voltage direct insulating power supply though can solve the common ground problem of the negative electrode and the low-voltage dc power supply after the isolation of thyristor, is that cost is high, and needs self-oscillation that small signal circuit is had electromagnetic interference equally.
Use has the relay of electrical isolation function, perhaps uses the load of the thyristor control high-voltage ac power of photoelectricity isolated controlling, can make low-voltage dc power supply and high-voltage ac power that the performance of electrical isolation is arranged.Use this two kinds of method control high-voltage ac powers load, though the convenient problem altogether that solves, the cost of relay and photoelectricity coupling thyristor is high, and volume is big.
As long as use the load of thyristor control high-voltage ac power, high-voltage ac power and low-voltage dc power supply are not electrical isolation just, and not all control circuit all must carry out electrical isolation with high-voltage ac power.
The result of literature search shows there is not to satisfy simultaneously the technical scheme of above-mentioned four requirements so far.For example: application number is 90102363.9 Chinese patent file, and name is called " capacitive voltage regulating dc power supply ", this technical scheme circuit more complicated, though solved the efficiency of transformer step-down rectifier, manufacturing cost is high.Application number is 00120735.0 Chinese patent file, and name is called " coil-free ac/dc power source ", and the transformer step-down also of no use of this technical scheme obtains low-voltage dc power supply, but has used the power-type switching tube, is similar to Switching Power Supply.The efficient of switch power technology is usually about 85%.Application number is 03129175.9 Chinese patent file, and name is called " a kind of low-voltage DC source circuit ", and this technology also is to have used the power-type switching tube, and efficient is lower, and manufacturing cost is not low yet.Application number is 200620014628.8 Chinese patent file; Name is called " resistance capacitance voltage-dropping power supply circuit "; This technical scheme adopts the method for halfwave rectifier; Can also can accomplish high-voltage alternating and low-voltage direct altogether without the power-type switching tube, but the low-voltage alternating current power supply that produces phase control signal can not be provided.Application number is 201010234344.0 Chinese patent file; Name is called " energy-saving capacitor depressurization dual-power-supply double-isolation control module "; This technical scheme adopts capacitor step-down; Improve AC power and be rectified into the efficient of DC power supply, but do not solved problem and acquisition low-voltage ac supply signal problem altogether.Application number is 200920148689.7 Chinese patent file; Name is called " the parallel booster circuit of the electric capacity of transducer air conditioning "; The purpose of this technical scheme is to improve the voltage of direct current output through electrolytic capacitor; Do not use decompression capacitor; Wherein the positive ends of the electrolytic capacitor of two serial connections is connected with the positive ends of bridge rectifier VD, and the negative polarity end of the electrolytic capacitor of two serial connections is connected with the negative polarity end of VD, and the positive polarity of the electrolytic capacitor of two serial connections is connected in series the diode anode cathode connection that a little is connected in series with two and is connected together with negative polarity.Application number is 200520001549.9 Chinese patent file; Title: " the transformerless DC power supply that suppresses the electronic circuit conducted interference "; After this technical scheme is concatenated into a resistance capacitance parallel branch through a resistance branch; Be linked into an ac input end of bridge rectifier again, shunt capacitance on the diode of four (or two) brachium pontis of bridge rectifier; The purpose of this technical scheme be through on resistance and the brachium pontis of serial connection and the diode that connects constitute a capacitance-resistance and absorb branch road, the interference signal in the inhibition electronic circuit is transmitted in the DC power supply.What be connected in series between the ac input end of the AC power of this technical scheme mesohigh and rectifier bridge is resistance branch and resistance capacitance parallel branch; The resistance of this technical scheme serial connection is formed these two effects of resistance capaciting absorpting circuit by step-down with the electric capacity on the brachium pontis; The electric capacity that this technical scheme goes up and connects at rectification brachium pontis (diode) is to suppress the required capacitance-resistance of conducted interference to absorb the capacitive part in the branch road; Between the negative pole (the anode tie points of two diodes) of the DC power supply of this technical scheme rectifier bridge output and two ac input ends of rectifier bridge and the capacitor that connects, play the effect that suppresses interference.Application number is 200910126979.6 Chinese patent file; Title: " transforming circuit for capacitor "; In this technology; Between the phase line of ac input end of bridge rectifier and high-tension AC power or zero line, be serially connected with decompression capacitor, between two ac input ends of bridge rectifier and connect a dividing potential drop electric capacity.This technological dividing potential drop electric capacity directly is connected on two ac input ends of rectifier bridge, and this technological voltage-dividing capacitor only plays the effect that exchanges dividing potential drop.Application number is 200710008782.3, title: " capacitance-voltage-distributing type DC power supply " is just the same on the annexation of capacitor and bridge rectifier with above-mentioned " transforming circuit for capacitor ".Application number is the Chinese patent file of 89202917.X, title: " condenser type charger ", this technology and above-mentioned " transforming circuit for capacitor " are that the decompression capacitor capacity is regulated through one group of switch in this technology much at one.Application number is 99248860.5 Chinese patent file; Title: " capacitance decompression driven for emitting lights diode apparatus "; The difference of this technology and above-mentioned " condenser type charger " is, the direct voltage size of bridge rectifier output depends on the ratio of capacitor value of resistance value and the decompression capacitor of DC load.Application number is 201120066640.4 Chinese patent file, and name is called " the adjustable brightness LED driving circuit of capacitively coupled ", and its technical scheme and application number are that 99248860.5 patent document is similar.
Summary of the invention
The object of the present invention is to provide a kind of high-voltage alternating and low-voltage alternating-current and low-voltage direct three power supplys circuit altogether, require below this circuit can satisfy simultaneously: power consumption is little, volume is little, cost is low; Rate ground obtains low-voltage dc power supply and low-voltage alternating current power supply; DC power supply, low-voltage alternating current power supply, the high-voltage ac power three can be altogether, and the person is that the control device three of low-voltage dc power supply, low-voltage alternating current power supply, high-voltage alternating load can be altogether.
Circuit of the present invention contains low-voltage dc power supply, the voltage stabilizing circuit that is connected with low-voltage dc power supply, the control device of high-voltage alternating load and the control circuit of this control device that is obtained behind decompression capacitor step-down and bridge rectifier through the low-voltage alternating current power supply that obtains after the decompression capacitor step-down, by high-voltage ac power by high-voltage ac power
When high-voltage ac power when being single-phase; The phase line of single phase alternating current power supply or zero line are received first end of decompression capacitor; Second of this decompression capacitor terminates to an ac input end in the rectifier bridge; Another ac input end connects the zero line or the phase line of high-voltage ac power; Between two ac input ends in the negative pole of low-voltage DC potential source and the rectifier bridge each and be connected to a capacitor; Second end of decompression capacitor is connected with the signal input part of control circuit, or that end that high-voltage ac power is not connected with decompression capacitor is connected with the signal input part of control circuit, and preferably second end of decompression capacitor is connected with the signal input part of control circuit; The signal output part of control circuit connects the signal input part of control device; The power input of the output connection control circuit of voltage stabilizing circuit is parallel with voltage stabilizing didoe between the both positive and negative polarity of low-voltage DC potential source, between second end that the low-voltage alternating-current load is connected on decompression capacitor and the end that high-voltage ac power is not connected with decompression capacitor;
When high-voltage ac power is three-phase four-wire system; Every phase line of three-phase alternating-current supply received first end of a decompression capacitor; Second end of each decompression capacitor is received in three ac input ends that have in the three-phase four-wire system full bridge rectifier respectively; A remaining ac input end connects the zero line of high-voltage ac power; Respectively be parallel with a capacitor between four ac input ends in the negative pole of low-voltage dc power supply and the rectifier bridge, second end of decompression capacitor is connected with the signal input part of control circuit, and the signal output part of control circuit connects the signal input part of control device; The power input of the output connection control circuit of voltage stabilizing circuit is parallel with voltage stabilizing didoe between the both positive and negative polarity of low-voltage DC potential source.
No matter be to single-phase or the AC power of three-phase four-wire system; No matter be single-phase bridge rectification or three-phase bridge rectification also; The capacitor step-down circuit of the high-voltage ac power that relates to above, rectification circuit, voltage stabilizing circuit; The control circuit of control device is prior art, by those skilled in the art is known.The control device of said high-voltage load can be the power semiconductor device of voltage or Current Control, preferably adopts unidirectional or bidirectional thyristor.
Operation principle: be connected between the negative pole of ac input end and low-voltage DC potential source of full bridge rectifier of decompression capacitor and produce the low pressure sine ac power supply that contains DC component, this sine ac power supply and low-voltage dc power supply be (end of low pressure sinusoidal ac potential source and the negative polarity end of low-voltage dc power supply have points of common connection) altogether.The capacitor between the negative pole of the zero line of high pressure sine ac power supply to low-voltage dc power supply and the parallel branch of rectifier diode can flow through the positive and negative half-wave current of high pressure sine ac power supply load; And the equivalent AC impedance of this branch road to compare the impedance of high pressure simple alternating current load little a lot of times, thereby make the negative pole of zero line and the low-voltage dc power supply of high pressure sine ac power supply possess the electrical characteristic on common ground.So constitute high-voltage alternating sine power supply, low pressure sine ac power supply and low-voltage dc power supply totally three power supplys circuit structure altogether.
The negative electrode of the single-phase or bidirectional thyristor of control high pressure sine ac power supply load can link to each other with the negative pole of low-voltage dc power supply, thereby constitutes the negative electrode circuit altogether of the thyristor of high pressure sine ac power supply, low-voltage dc power supply, low pressure sine ac power supply and control high pressure simple alternating current load.
In this circuit structure; All are connected between the zero line of the paramount positive pressure string of ac input end AC power of full bridge rectifier of decompression capacitor and produce the low pressure sine ac power supply that does not contain DC component, and this low-voltage alternating current power supply can connect the load of sinusoidal low-voltage alternating current power supply.
Under the condition that cost and volume allow, the two ends of all diodes that also can be in bridge rectifier all and capacity such as connect be the capacitor of C, can further improve the electric property of this circuit structure.
The capacitor between the negative polarity end of the zero line of high pressure sine ac power supply to low-voltage dc power supply and the parallel branch of rectifier diode flow through the electric current of high pressure sine ac power supply load when big; The magnitude of voltage of the low-voltage direct output of bridge rectifier is raise; So the low-voltage direct output is connected to voltage stabilizing didoe, with the magnitude of voltage of restriction low-voltage direct.
Further specify the operation principle of circuit of the present invention below in conjunction with accompanying drawing.
See Fig. 1 and Fig. 2.Fig. 1 is the topology diagram between each functional module in the circuit of the present invention.Fig. 1 mesohigh AC power is meant that China's low voltage electric network voltage is 220 volts or 380 volts of AC powers, and American-European countries is 120 volts.Low-voltage alternating current power supply is through producing after the decompression capacitor.Low-voltage dc power supply produces after through decompression capacitor and rectification.The low-voltage alternating-current load comprises the phase control signal that line voltage is provided to control circuit, owes the signal that () pressure was pressed or crossed to (), or is used for the AC load of control circuit compensation usefulness.The load current size that low-voltage alternating current power supply can bear depends on the capacitive reactance size of decompression capacitor.The load of low-voltage dc power supply mainly is a control circuit in the monitoring state.Among Fig. 2, the magnitude of voltage of low-voltage dc power supply is relevant with the ratio of the capacitive reactance (being the equivalence interchange capacitive reactance between the ac input end in the bridge rectifier) of the capacitive reactance of decompression capacitor and dividing potential drop electric capacity.When high-tension AC load is big; The amplitude of the low-voltage ac voltage component on the capacitor parallelly connected with rectifier diode is constant; But the amplitude of DC voltage component can rise; For the voltage of the input that makes voltage stabilizing circuit is unlikely to surpass the upper limit of voltage stabilizing circuit input voltage, need add voltage stabilizing didoe.T among the figure is controlled thyristor.The high-voltage alternating load can be the relay/contactor coil of an actuator, also can be light-emitting apparatus etc., and high-tension in a word AC load can be very not heavy.
The single-phase high voltage AC power obtains low-voltage alternating current power supply after decompression capacitor 1 step-down, the single-phase high voltage AC power is through decompression capacitor 1 step-down and after rectification, obtain low-voltage dc power supply, and voltage stabilizing circuit is connected with low-voltage dc power supply.The phase line L of high-voltage ac power connects first end of decompression capacitor 1, and the low-voltage alternating current power supply that produces on the branch road of rectifier diode and capacitor parallel connection directly is connected with low-voltage dc power supply altogether.Parallel branch and the low-voltage dc power supply of high-voltage ac power through rectifier diode and capacitor altogether.The zero line N of high-voltage ac power is connected with an end of a branch road that is formed in parallel by diode 2 and capacitor 3, and the other end of this branch road is the negative pole of low-voltage dc power supply.Be parallel with the voltage-stabiliser tube 4 that deboost raises between the positive pole of low-voltage dc power supply and the negative pole.Cross-over connection has a branch road that is formed in parallel by diode 6 and capacitor 5 between second end of decompression capacitor 1 and the negative pole of low-voltage dc power supply; Second end of decompression capacitor 1 is connected with the signal input part of control circuit; The signal output part of control circuit connects the gate pole of bidirectional thyristor, the power input of the output connection control circuit of voltage stabilizing circuit.High-voltage ac power is single-phase simple alternating current civil power.Low-voltage alternating-current and low-voltage direct are altogether.7 is rectifier diode among Fig. 2, and 8 is filtering capacitor.The low pressure sine ac power supply that contains DC component that branch road produced that diode 6 and capacitor 5 are formed in parallel is as the phase control signal of control circuit.When the load of bidirectional thyristor T conducting high-voltage alternating; A branch road that is formed in parallel by diode 2 and capacitor 3 provides the alternating current path of the positive and negative half-wave current of high-voltage alternating load, plays high-voltage alternating and low-voltage alternating current power supply and low-tension supply load effect altogether thereof.For the three-phase alternating current high pressure, its operation principle is also identical.
Circuit of the present invention adopts bridge rectifier, can be one single-phase by four rectifier diodes form full-bridge, the perhaps full-bridge formed by eight rectifier diodes of three-phase four-wire system.The anode tie point of rectifier diode in the circuit (the negative polarity node of DC power supply) between the ac input end point (anode of diode and cathode connection) of rectifier bridge, all and connect that capacity equates, its capacity C is greater than the capacitor more than decompression capacitor capacity C 1 several times to hundred times; The cathode connection of rectifier diode in the circuit (the positive polarity node of DC power supply) can and connect capacitor between the ac input end point (anode of diode and cathode connection) of rectifier bridge, also can not and connect capacitor.When the cathode connection of rectifier diode in the circuit between the ac input end point of rectifier bridge and when connecing capacitor, play the effect that the equivalence that changes between the bridge rectifier ac input end exchanges capacitive reactance, do not change the key property of circuit of the present invention.
The points of common connection of all decompression capacitors and bridge rectifier ac input end is between the negative polarity end of low-voltage dc power supply; The voltage of that produce and the negative polarity end low-voltage AC potential source altogether dc low-voltage DC power supply, under the single-phase high voltage Power Supplies Condition with single-phase high voltage power source voltage same-phase; Under the condition of the three-phase high-voltage power supply of three-phase four-wire system, with the phase voltage same-phase in the three-phase.
The capacity of setting decompression capacitor is C1; The condenser capacity parallelly connected with rectifier diode is C; When the electric current of high-voltage alternating load, low-voltage direct load and low-voltage alternating-current load is all zero; Between the ac input end of negative polarity end to the bridge rectifier of DC power supply, the theoretical ratio of the low-voltage alternating current power supply voltage effective value Uc at the branch road two ends that any one diode is parallelly connected with capacitor and high pressure sinusoidal voltage effective value U is: U/Uc=C/ (2C1+1).
When the electric current of high-voltage alternating load, low-voltage direct load and low-voltage alternating-current load is all zero; In the bridge rectifier all diode two ends all and capacity such as be connected to when being the capacitor of C, the theoretical ratio of the low-voltage alternating current power supply voltage effective value Uc at the branch road two ends that any one diode between the ac input end of negative polarity end to the bridge rectifier of DC power supply is parallelly connected with capacitor and high pressure sinusoidal voltage effective value U is: U/Uc=C/ (C1+1).
When the electric current of high-voltage alternating load, low-voltage direct load and low-voltage alternating-current load is all zero; Contain two components in the low-voltage ac voltage at the branch road two ends that any one diode between the ac input end of negative polarity end to the bridge rectifier of DC power supply is parallelly connected with capacitor; Wherein another is an alternating current component to the theoretical D. C. value of DC voltage component for
, and the theoretical amplitude of its sine wave AC also is
After the electric current of high-voltage alternating load flows through one of them diode and capacitor parallel branch through low-voltage dc power supply negative polarity end; The direct voltage of DC voltage component on this branch road and bridge rectifier output can raise; Even the high pressure sinusoidal voltage value of input remains unchanged, the low-voltage dc voltage value of output also can raise.The alternating voltage component that common node is arranged on the parallel branch of other diode that does not flow through the high-voltage alternating load current and capacitor remains unchanged.
The capacitor parallelly connected with diode can be non-polar capacitor, and also can be has electrolytic capacitor polarity, that can bear the half-sinusoid electric current.The volume of capacitor of considering nonpolarity high power capacity low-voltage is bigger, should adopt loss tangent value little, can bear the electrolytic capacitor of 50 or 60 hertz half-sinusoid electric current for a long time.
Because capacitor has the characteristic of constant-current source as voltage drop element, so when the low-voltage alternating-current load current, its load impedance exchanges capacitive reactance and is parallelly connected and concerns that the voltage at rectifier bridge ac input end two ends will reduce with equivalence on being connected in parallel on diode.The load capacity of low-voltage alternating current power supply is relevant with the equivalence interchange capacitor value of rectifier bridge ac input end point-to-point transmission.
Low-voltage dc power supply be common ground by the low-voltage alternating current power supply that produces on the parallelly connected branch road of rectifier diode and capacitor; But high-voltage ac power and low-voltage dc power supply are through the parallel branch of diode and capacitor " altogether "; The positive and negative half-wave current of high-voltage alternating load current all will pass through this branch road, so the high-voltage alternating load capacity also has certain restriction.
Fig. 3 is other a kind of form of expression of Fig. 2, and the difference of the two only is: first of decompression capacitor terminates on the live wire L of high-voltage ac power among Fig. 2, and first of decompression capacitor terminates on the zero line N of high-voltage ac power among Fig. 3.
Fig. 4 is the improvement circuit of Fig. 2, and the difference of Fig. 4 and Fig. 2 is: all rectifier diodes respectively are parallel with a capacitor, are 3,5,9,10 among the figure.Preferably equate with the capacity of the capacitor 3,5,9,10 of four diodes parallel connection respectively among Fig. 4.Two capacitors 9 and 10 the capacity that is connected on the low-voltage dc power supply positive terminal can influence DC voltage component and the amplitude of alternating voltage component on two capacitors 3 and 5 that are connected on the dc power cathode end.When these four condenser capacities equated to be C, the proportionate relationship of low-voltage alternating current power supply voltage effective value Uc and high-voltage ac power voltage effective value U was: U/Uc=(C/C1+1).
The beneficial effect of circuit of the present invention is to require below satisfying simultaneously: power consumption is little, volume is little, cost is low; Can obtain low-voltage dc power supply and low-voltage alternating current power supply expeditiously; Low-voltage dc power supply, low-voltage alternating current power supply, high-voltage ac power three can be altogether, or the control device three of low-voltage dc power supply, low-voltage alternating current power supply, high-voltage alternating load can be altogether.This circuit can be used as household electrical appliance, office electrical equipment, and industrial enterprise is all electrical equipment that need be in standby mode work required low-voltage DC potential source and the low-voltage ac signal source of doing control usefulness under holding state with low-voltage electrical apparatus etc.
The anti-line voltage interference performance intrinsic because of circuit of the present invention is also very strong, can be used for metering, demonstration, the field bus communication system of some electric power systems or other physical systems, occasions such as wireless communication system.
Many control apparatuses in Industry Control, relaying protection, household electrical appliance and the office equipment are in holding state usually.Under holding state, the power consumption of control circuit can be accomplished very little, is not more than 100 milliwatts usually, but in order to obtain the needed low-voltage dc power supply of control circuit, but will consume several watts to tens watts active power.In order to obtain the simple alternating current low voltage signal of line voltage, also need consume very big active power.Although every FU in the time energy consumption very little, they are throughout the year at network operation, and the enormous amount of this type low-voltage electrical, total energy consumption is just very surprising.Circuit of the present invention has very high practical value aspect energy-saving and cost-reducing.
For responding the energy-conservation proposal " 1 watt of plan " that International Energy Agency (IEA) was initiated to the whole world in 2000; On December 17th, 2008; EU Committee has put into effect ecological design rules; With the standby that reduces all household electrical appliance and office equipment or the power consumption of " shut " mode", and in formal enforcement on January 7th, 2009.Laws and regulations requirement: before 2013, the standby of all electric equipment products or the energy consumption of " shut " mode" must be less than 1 watt (for products of no indicating device), or less than 2 watts (for products that indicating device is arranged).From 2013; The standby of all electric equipment products or the energy consumption of " shut " mode" must be less than 0.5 watt (for products of no indicating device); Or less than 1 watt (for product that indicating device is arranged), and before the year two thousand twenty, the power consumption of standby or " shut " mode" reduces 75% again.This is the requirement of whole mankind's sustainable development, is energy-saving and emission-reduction, and the needs of environmental protection are the trade technology barriers that EU Committee is provided with.Reduce household electrical appliance and the standby of office appliances or the power consumption of " shut " mode"; Comprise that reducing industrial enterprise is the problem that keeps the necessary solution of competitiveness institute of China's low-pressure electronic equipment product with the power consumption of the standby mode of low voltage electrical equipment; Also be energy-saving and emission-reduction, the needs of sustainable development.
Along with the development of very large scale integration technology, the power consumption of functional IC chip is more and more littler, and the power consumption of generation low-voltage dc power supply and low-voltage alternating current power supply never can lower.The present invention expeditiously aspect 220 volts/380 volts interchange acquisition low-voltage dc power supplies and low-voltage alternating current power supply the Technological Economy meaning very obvious.
Description of drawings
Fig. 1 is the topology diagram between each functional module in the circuit of the present invention.
A kind of electrical schematic diagram when Fig. 2 is single-phase for high-voltage ac power.
Other a kind of electrical schematic diagram when Fig. 3 is single-phase for high-voltage ac power.
When Fig. 4 is single-phase for high-voltage ac power, the electrical schematic diagram when each rectifier diode all is parallel with capacitor.
Fig. 5 is the electrical schematic diagram of embodiment 1.
Fig. 6 is the electrical schematic diagram of embodiment 2.
Fig. 7 is the electrical schematic diagram of embodiment 3.
Embodiment
Embodiment 1: see Fig. 5.High-voltage ac power load (being to receive phased load among Fig. 5) is the illuminating lamp of an adjustable brightness, or the ohmic load through phased adjusting active power.The gate signal of control circuit output is phased trigger impulse; Thereby the on-delay angle of control thyristor; The active power of high-tension AC power load is changed, reach the purpose of control lighting brightness, perhaps reach the purpose of controlling resistance bearing power.
Embodiment 2: see Fig. 6.High-voltage ac power load (receiving phased load) is a relay or contactor coil; The gate signal of control circuit output is certain signal that requires relay/contactor coil energising or cut off the power supply that receives according to control circuit; Be to cause a kind of state of low-voltage electrical apparatus (like holding state; Power supply state) changes another state (like operating state, off-position) over to.The gate pole trigger impulse of phase controlled thyristors, or be high level (coil electricity), or be low level (coil blackout), thus the energising of control relay coil and outage.In the relaying protection of electric power system or in the low-voltage electrical apparatus of family expenses, office usefulness, this relay coil can be a tripping coil, makes power failure, or the energising pull-in winding, power supply begun; It also can be the relay that produces the protection action.Residual current protecting relay for example, at this moment, the low-voltage alternating-current load among Fig. 6 is resistance, the capacitive compensation circuit of residual current transformer.Include the magnitude amount of high-voltage ac power in the signal that diode that is connected altogether with the dc power cathode end and capacitor parallel branch output to control circuit.When the voltage of high voltage source raise or reduce, the voltage amplitude on this parallel branch can change, thereby realizes the defencive function of under-voltage (voltage is too low) or overvoltage (voltage is too high).For example the present invention can be used as under the holding state of television set again, accepts the required power supply of circuit of remote control command, and the stand-by power consumption that can guarantee television set is less than 0.1 watt.At this moment, the high-voltage alternating load among Fig. 6 is the coil of a small-sized relay, and control circuit receives the instruction that is transformed into operating state by holding state, and high level of control circuit output powers on relay, is transferred to mode of operation to cause television set.
Embodiment 3: see Fig. 7.Every phase line of three-phase four-wire system high-voltage ac power connects first end of corresponding decompression capacitor, and the three-phase low-voltage alternating current power supply directly is connected with high-voltage ac power altogether.The zero line N (n) of high-voltage ac power is connected with the input of a branch road that is formed in parallel by rectifier diode 11 and capacitor 12, and the anode of this rectifier diode is the negative pole of low-voltage dc power supply.Between second end of each decompression capacitor and the negative pole of low-voltage dc power supply respectively cross-over connection a branch road that is formed in parallel by rectifier diode and capacitor is arranged.Second end of each decompression capacitor is connected with the corresponding signal input of control circuit, and the signal output part of control circuit connects the gate pole of thyristor 13, the power input of the output connection control circuit of voltage stabilizing circuit.Three phase line A, B, C are connected respectively to three three tie point a by the parallel branch of diode and capacitor through decompression capacitor, b, c, zero line N directly receive the 4th rectifier diode with by diode 11 tie point n with the parallel branch of capacitor 12.Node a, b, the voltage between c and the low-voltage dc power supply negative pole end is exactly the low-voltage ac voltage signal, and the phase voltage of they and three-phase high-voltage AC supply voltage is homophase and three symmetrical respectively.The value of the voltage signal voltage between node n and the low-voltage dc power supply negative pole reflects the symmetry of three-phase alternating-current supply.When the three-phase voltage symmetry, in theory, the voltage between node n and the low-voltage dc power supply negative pole is zero; When three-phase voltage is asymmetric, in the voltage between node n and the low-voltage dc power supply negative pole, amplitude is arranged greater than zero direct current signal and AC signal.Node a, b, the low-voltage ac voltage signal between c and the low-voltage dc power supply negative pole is also asymmetric.When phase shortage (one or two phase line outage in three phase lines) occurring, node a, b, it is which cuts off the power supply mutually that c can reflect the voltage signal of low-voltage direct negative pole.Therefore present embodiment can be used as residual current protecting circuit breaker or steelyard slepsydra electric protection circuit breaker, open-phase protection relay, phase failure relay, the low-voltage alternating current power supply and the low-voltage dc power supply of three-phase asymmetrical protection relay etc.The coil of relay or contactor can have phase voltage by the phase line power supply of three-phase alternating-current supply on the coil, perhaps supplied power by low-voltage dc power supply.
Above embodiment only is for the present invention is described further, and scope of the present invention does not receive the limitation of the embodiment that lifts.
Claims (5)
1. a high-voltage alternating and low-voltage alternating-current and low-voltage direct three power supplys circuit altogether; Contain by high-voltage ac power through the low-voltage alternating current power supply that obtains after the decompression capacitor step-down, by low-voltage dc power supply, the voltage stabilizing circuit that is connected with low-voltage dc power supply, the control device of high-voltage alternating load and the control circuit of this control device that high-voltage ac power obtains behind decompression capacitor step-down and bridge rectifier, it is characterized in that:
When high-voltage ac power when being single-phase; The phase line of single phase alternating current power supply or zero line are received first end of decompression capacitor; Second of this decompression capacitor terminates to an ac input end in the rectifier bridge; Another ac input end connects the zero line or the phase line of high-voltage ac power; Between two ac input ends in the negative pole of low-voltage DC potential source and the rectifier bridge each and be connected to a capacitor, second end of decompression capacitor is connected with the signal input part of control circuit, or that end that high-voltage ac power is not connected with decompression capacitor is connected with the signal input part of control circuit; The signal output part of control circuit connects the signal input part of control device; The power input of the output connection control circuit of voltage stabilizing circuit is parallel with voltage stabilizing didoe between the both positive and negative polarity of low-voltage DC potential source, between second end that the low-voltage alternating-current load is connected on decompression capacitor and the end that high-voltage ac power is not connected with decompression capacitor;
When high-voltage ac power is three-phase four-wire system; Every phase line of three-phase alternating-current supply received first end of a decompression capacitor; Second end of each decompression capacitor is received in three ac input ends that have in the three-phase four-wire system full bridge rectifier respectively; A remaining ac input end connects the zero line of high-voltage ac power; Respectively be parallel with a capacitor between four ac input ends in the negative pole of low-voltage dc power supply and the rectifier bridge, second end of decompression capacitor is connected with the signal input part of control circuit, and the signal output part of control circuit connects the signal input part of control device; The power input of the output connection control circuit of voltage stabilizing circuit is parallel with voltage stabilizing didoe between the both positive and negative polarity of low-voltage DC potential source.
2. high-voltage alternating as claimed in claim 1 and low-voltage alternating-current and low-voltage direct three power supplys circuit altogether is characterized in that: when high-voltage ac power when being single-phase, second end of decompression capacitor is connected with the signal input part of control circuit.
3. high-voltage alternating as claimed in claim 1 and low-voltage alternating-current and low-voltage direct three power supplys circuit altogether, it is characterized in that: the control device of said high-voltage ac power load is the power semiconductor device of voltage or Current Control.
4. high-voltage alternating as claimed in claim 1 and low-voltage alternating-current and low-voltage direct three power supplys circuit altogether is characterized in that: the two ends of all diodes in bridge rectifier all and the capacitor of capacity such as be connected to.
5. high-voltage alternating as claimed in claim 3 and low-voltage alternating-current and low-voltage direct three power supplys circuit altogether, it is characterized in that: power semiconductor device is unidirectional or bidirectional thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210196677.8A CN102694477B (en) | 2012-06-14 | 2012-06-14 | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210196677.8A CN102694477B (en) | 2012-06-14 | 2012-06-14 | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102694477A true CN102694477A (en) | 2012-09-26 |
| CN102694477B CN102694477B (en) | 2014-10-29 |
Family
ID=46859787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210196677.8A Expired - Fee Related CN102694477B (en) | 2012-06-14 | 2012-06-14 | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102694477B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899200A (en) * | 2015-12-17 | 2017-06-27 | 上海昱章电气成套设备有限公司 | The supply unit of rod control system |
| CN107209221A (en) * | 2015-01-21 | 2017-09-26 | 西门子公司 | Circuit arrangement and high-voltage testing equipment for Hi-pot test |
| CN109872549A (en) * | 2019-03-18 | 2019-06-11 | 深圳市赛诺杰科技有限公司 | A kind of power supply circuit that can continuously power and the traffic-control unit based on it |
| CN112910274A (en) * | 2020-12-14 | 2021-06-04 | 杭州先途电子有限公司 | Controller |
| CN112953469A (en) * | 2021-01-29 | 2021-06-11 | 华中科技大学 | Hydrogen thyratron high-pressure suspension trigger and control system thereof |
| CN113595466A (en) * | 2021-08-26 | 2021-11-02 | 浙江台运汽车科技有限公司 | Electric isolation circuit of motor controller |
| US11223291B2 (en) | 2018-08-21 | 2022-01-11 | Nr Electric Co., Ltd. | Bipolar bidirectional DC converter, and control method and control device therefor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2904467Y (en) * | 2006-05-26 | 2007-05-23 | 潍坊华光通讯有限公司 | Safety coupler circuit for mine |
| US20080170423A1 (en) * | 2007-01-12 | 2008-07-17 | Tsai Chin Cheng | AC/DC transformation and voltage stabilizing circuit |
| CN201585169U (en) * | 2009-12-28 | 2010-09-15 | 袁仕杰 | Capacitance step-down LED drive circuit |
| CN201717794U (en) * | 2010-03-04 | 2011-01-19 | 汤征宁 | Capacitor voltage reducing circuit using impedance input filter |
| CN201898451U (en) * | 2010-11-22 | 2011-07-13 | 亚星健康科技有限公司 | Multi-stage capacitor step-down power supply circuit |
| CN201904733U (en) * | 2010-12-17 | 2011-07-20 | 美的集团有限公司 | Capacitor voltage reduction power supply circuit |
| CN102183980A (en) * | 2011-04-28 | 2011-09-14 | 刘家发 | Temperature control timer prepared from time-base circuit |
| CN202014194U (en) * | 2011-05-20 | 2011-10-19 | 深圳市阳邦电子有限公司 | Relay drive circuit |
| CN202663316U (en) * | 2012-06-14 | 2013-01-09 | 邹溪 | Circuit with three common-grounded power supplies of high voltage alternating current, low voltage alternating current and low voltage direct current |
-
2012
- 2012-06-14 CN CN201210196677.8A patent/CN102694477B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2904467Y (en) * | 2006-05-26 | 2007-05-23 | 潍坊华光通讯有限公司 | Safety coupler circuit for mine |
| US20080170423A1 (en) * | 2007-01-12 | 2008-07-17 | Tsai Chin Cheng | AC/DC transformation and voltage stabilizing circuit |
| CN201585169U (en) * | 2009-12-28 | 2010-09-15 | 袁仕杰 | Capacitance step-down LED drive circuit |
| CN201717794U (en) * | 2010-03-04 | 2011-01-19 | 汤征宁 | Capacitor voltage reducing circuit using impedance input filter |
| CN201898451U (en) * | 2010-11-22 | 2011-07-13 | 亚星健康科技有限公司 | Multi-stage capacitor step-down power supply circuit |
| CN201904733U (en) * | 2010-12-17 | 2011-07-20 | 美的集团有限公司 | Capacitor voltage reduction power supply circuit |
| CN102183980A (en) * | 2011-04-28 | 2011-09-14 | 刘家发 | Temperature control timer prepared from time-base circuit |
| CN202014194U (en) * | 2011-05-20 | 2011-10-19 | 深圳市阳邦电子有限公司 | Relay drive circuit |
| CN202663316U (en) * | 2012-06-14 | 2013-01-09 | 邹溪 | Circuit with three common-grounded power supplies of high voltage alternating current, low voltage alternating current and low voltage direct current |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107209221A (en) * | 2015-01-21 | 2017-09-26 | 西门子公司 | Circuit arrangement and high-voltage testing equipment for Hi-pot test |
| CN106899200A (en) * | 2015-12-17 | 2017-06-27 | 上海昱章电气成套设备有限公司 | The supply unit of rod control system |
| US11223291B2 (en) | 2018-08-21 | 2022-01-11 | Nr Electric Co., Ltd. | Bipolar bidirectional DC converter, and control method and control device therefor |
| CN109872549A (en) * | 2019-03-18 | 2019-06-11 | 深圳市赛诺杰科技有限公司 | A kind of power supply circuit that can continuously power and the traffic-control unit based on it |
| CN112910274A (en) * | 2020-12-14 | 2021-06-04 | 杭州先途电子有限公司 | Controller |
| CN112953469A (en) * | 2021-01-29 | 2021-06-11 | 华中科技大学 | Hydrogen thyratron high-pressure suspension trigger and control system thereof |
| CN113595466A (en) * | 2021-08-26 | 2021-11-02 | 浙江台运汽车科技有限公司 | Electric isolation circuit of motor controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102694477B (en) | 2014-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102694477B (en) | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit | |
| CN201467002U (en) | Power supply energy-saving circuit for household appliances and office equipment | |
| CN109525132A (en) | A kind of interleaved PFC constant voltage drive circuit, driving power and television set | |
| CN101262556B (en) | A STB with low-power consumption standby | |
| WO2014099875A2 (en) | Distribution transformer power flow controller | |
| CN202663316U (en) | Circuit with three common-grounded power supplies of high voltage alternating current, low voltage alternating current and low voltage direct current | |
| CN203377777U (en) | A soft start circuit of an auxiliary power supply | |
| CN110535139A (en) | A kind of wide cut regulator | |
| CN202068337U (en) | Auxiliary power supply for three-phase intelligent ammeter | |
| CN201097176Y (en) | Power supply controller | |
| RU2637516C2 (en) | Circuit and rectification method for unbalanced two-phase dc network | |
| CN102810986B (en) | A kind of series topology LED switch power circuit | |
| CN204030975U (en) | Single-phase and automatic three-phase switching high voltage source | |
| CN103384119A (en) | Alternating current side energy-taking device and method for static var generator unit module | |
| CN204118734U (en) | Photovoltaic air conditioner power supply circuit and photovoltaic air conditioner | |
| CN107612348A (en) | Isolation type switching power supply and its electronic installation | |
| CN208063038U (en) | A kind of power circuit | |
| CN202930939U (en) | Intelligent type three phase electricity-saving appliance | |
| CN202750315U (en) | Magnetron filament power supply circuit | |
| CN111969611A (en) | Transformer on-load automatic voltage regulation driving and controlling system | |
| CN103280992B (en) | Three-phase six-port L-C constant-current source high-voltage power source | |
| CN111865102A (en) | An electronic analog load system | |
| CN103840483A (en) | Power supply system used for low-voltage ride through | |
| US20120300509A1 (en) | Power supply system and method with electronic high-voltage transformer | |
| CN104269843B (en) | Photovoltaic air conditioner power supply circuit and photovoltaic air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20150614 |
|
| EXPY | Termination of patent right or utility model |