CN1945950A - Switch step switchover type AC voltage regulator - Google Patents
Switch step switchover type AC voltage regulator Download PDFInfo
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- CN1945950A CN1945950A CN 200610138376 CN200610138376A CN1945950A CN 1945950 A CN1945950 A CN 1945950A CN 200610138376 CN200610138376 CN 200610138376 CN 200610138376 A CN200610138376 A CN 200610138376A CN 1945950 A CN1945950 A CN 1945950A
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Abstract
This invention relates to a switch step switch AC voltage regulator, in which, a linear reactance winding is serial to the switch to constitute a connection loop and realize the step switch to eliminate hidden troubles of over voltage and over current so as to protect electronic switches naturally. An absorption loop combines with two kinds of windings to constitute an AC filter to chop and absorb the peak of outside conductive peak voltages and carries out double-way purification between the supply and the load at the same time when protecting the switch.
Description
Technical field the present invention relates to a kind of switch step switchover type AC voltage regulator, belongs to the Electrical Control Technology field.
Technical background carries out in the prior art of pressure regulation with the switch switching that is connected in the Transformer Winding tap, in order to prevent because of the overvoltage that switch switching error causes, the problem that overcurrent is damaged switch, winding, guarantee reliability, usually adopt such technical scheme: a kind of is to be connected in series current limiting reactor respectively in each tap of Transformer Winding, this scheme need be used the reactor identical with the tap number, the tap number more for a long time, reactor quantity increases, volume increases, and cost raises; Another kind is to be connected in series current-limiting resistance respectively in each tap of Transformer Winding, and this has not only increased power consumption, has reduced efficient, and produces unnecessary heat.The technical solution [number of patent application is respectively: 97118804.1,02104004.4 recalled] that I propose before this is not though exist similar deficiency, but because a switch only produces a voltage quantities, and be provided with switching transition loop, not only the switch consumption is more, also is not easy to control.The design is after last application [031065236], another scheme of proposition.
The objective of the invention is to provide that a kind of circuit is simple, cost is low, efficient is high; switch neither produces overvoltage when switching and does not also produce overcurrent; both made two adjacent switches connect also not short circuit simultaneously, thereby made switch, winding be effectively protected, have concurrently again the AC voltage regulator of purification function.
Summary of the invention 1, switch step switchover type AC voltage regulator of the present invention partly are made up of tapped transformer, linear reactor, switch, AC filter capacitor and piezo-resistance etc.Be connected to switch respectively in each tap of Transformer Winding, the one end is the common port of voltage regulator input, output, and the other end is an input.It is characterized in that: be connected to the winding that is around on the same linear reactor iron core on the switch, wherein the head end of a part of winding is connected with each odd number switch that tap connects of Transformer Winding respectively, the end of another part winding is connected with Transformer Winding switch that each even tap connects respectively, the other end of each winding is connected to each other, become the public end and the output voltage regulator of reactor, form the switching contact loop of switch.The cross-over connection absorption circuit that is in parallel and forms by AC filter capacitor and piezo-resistance respectively between the phase line of voltage regulator input, output and the zero line.When a switch connection; output produces voltage; at this moment being serially connected with reactor winding between input, the output has formed towering type jointly with absorption circuit and has exchanged low pass filter; suppress, absorb inputing or outputing next high order harmonic components such as the spike voltage interference of end conduction; both split to close and protected, between power supply and load, implemented two-way purification again.When switch switches, the cut-through switch that does not turn-off, is adjacent except that switch to be cut of former connection is promptly connected, output voltage produces a variable Δ U, this moment two on-states that exist together adjacent switch between cross-over connection be two with the reactor windings that are in series, in the design load scope and not short circuit, this winding has been formed alternating current filter with absorption circuit again to the induction reactance of this winding [ω L] simultaneously the return rings current limit that forms between two switches.Turn-off the switch that removes to be cut of former connection, output voltage produces a variable Δ U again, and reactor inserts winding and still formed with absorption circuit and exchange low pass filter.Each switch is so proceeded stepping and is switched, and repeats and reproduction process and state as above.Holding circuit was not interrupted when switching contact loop made switch realize the stepping switching; thereby the moment that the moment of switch connection does not produce impulse current, shutoff does not produce back-emf; when switch, particularly electronic switch and winding obtain conservation of nature, increased level-on variable again behind the output electricity.
2, switch step switchover type AC voltage regulator of the present invention partly is made up of compensator transformer, linear tap reactor, switch, AC filter capacitor and piezo-resistance etc.The elementary winding of compensator transformer is provided with tap, its head end is connected with phase-change switch on being connected across power supply, be connected to tap changer respectively in terminal and each tap, the other end of each switch is connected with another phase-change switch on being connected across power supply, becomes the compensation winding of voltage regulator.It is characterized in that: compensator transformer is secondary to be compound double winding, the head end of one of them winding and the end of another winding are that the voltage regulator input connects phase line of power, zero line respectively, the other end of two windings is that output connects the load two ends respectively, becomes the load winding.Be connected to linear tap reactor winding between the tap changer that the compensation winding is terminal and each tap is connect and another phase-change switch, a centre tap of this winding is that the public end of reactor is connected with phase-change switch, other taps of public end one side winding respectively with compensation each odd number switch that tap connects of winding corresponding connection, other taps of public end opposite side winding are terminal with the compensation winding respectively and switch that each even tap connects is corresponding is connected, and becomes the switching contact loop of tap changer.Cross-over connection is by commutation interconnection switch and another winding of reactor contact loop that the phase-change switch commentaries on classics formed cuts that is in series on the compensation tapping.The cross-over connection absorption circuit that is in parallel and formed by A C filter capacitor and piezo-resistance respectively between the phase line and zero line of voltage regulator input, output, on the compensation winding, two kinds of windings of this loop and compensator transformer have been formed alternating current filter jointly.Connect with phase line, zero line respectively when two phase-change switches, when making the compensation winding be in the state identical with load winding phase place, after a tap changer was connected, the load winding produced the bucking voltage identical with power phase.When tap changer switches, the cut-through switch that does not turn-off, is adjacent except that switch to be cut of former connection is promptly connected, output voltage produces a variable Δ U, this moment two on-states that exist together adjacent switch between cross-over connection be the access winding of the public end of reactor both sides, the induction reactance of this winding [ω L] the return rings current limit that forms between two switches within the design load scope.Turn-off the switch that removes to be cut of former connection, output voltage produces a variable Δ U again.Each tap changer stepping like this is switched, and repeats and reproduction process and state as above, and output voltage is being higher than stepped on the input voltage basis.When switching contact loop makes switch realize that stepping is switched; keep the compensation winding not interrupt and do not produce not short circuit between mutual inductance overvoltage, the switch and do not produce overcurrent, output voltage has increased level-on variable when making switch, particularly electronic switch and winding obtain conservation of nature.When the terminal institute of compensation winding connects that switch is connected separately, one of them phase-change switch desire is changeed when cutting, commutation contact circuit switching is at first connected, output voltage produces a variable Δ U, the phase-change switch of former connection closes has no progeny, inserting switch connects again, output voltage produces a variable Δ U again, and this moment, output voltage equaled input voltage.After another phase-change switch is cut with the same manner commentaries on classics, 180 ° of compensation winding phase change, output voltage produces a variable Δ U, turn-offs commutation contact circuit switching, and output voltage produces a variable Δ U again.Phase-change switch changes when cutting, and commutation contact loop keeps the compensation winding not open a way and do not produce mutual inductance overvoltage, not short circuit of phase-change switch and do not produce overcurrent, makes switch, output voltage increased level-on variable when winding obtained conservation of nature.When tap changer was proceeded the stepping switching, output voltage had been lower than stepped on the input voltage basis.When inputing or outputing end when importing high order harmonic component such as peak voltage into and disturbing, cut cutting edge of a knife or a sword, absorption by alternating current filter, both switch is implemented further protection, between power supply and load, carry out two-way purification again.
3, switch step switchover type AC voltage regulator of the present invention partly is made up of compensator transformer, linear reactor, switch, AC filter capacitor and piezo-resistance etc.The elementary winding of compensator transformer is provided with tap, its head end is connected with phase-change switch on being connected across power supply, be connected to tap changer respectively in terminal and each tap, the other end of each switch is connected with another phase-change switch on being connected across power supply, becomes the compensation winding of voltage regulator.It is characterized in that: compensator transformer is secondary to be compound double winding, the head end of one of them winding and the end of another winding are that the voltage regulator input connects phase line of power, zero line respectively, the other end of two windings is that output connects the load two ends respectively, becomes the load winding.Be connected to the winding that is around on the same linear reactor iron core between tap changer that the compensation winding is terminal and each tap is connect and the phase-change switch, wherein the head end of a part of winding is connected with each odd number switch that tap connects of compensation winding, the end of another part winding is connected with compensation winding end and switch that each even tap connects, the other end of each winding is connected with phase-change switch, becomes the switching contact loop of tap changer.The phase-change switch that cross-over connection is made up of commutation interconnection switch and another windings in series of reactor on the compensation tapping changes the contact loop of cutting.The cross-over connection absorption circuit that is in parallel and formed by AC filter capacitor and piezo-resistance respectively between the phase line and zero line of voltage regulator input, output, on the compensation winding, two kinds of windings of this loop and compensator transformer have been formed alternating current filter jointly.Connect with phase line, zero line respectively when two phase-change switches, when making the compensation winding be in the state identical with load winding phase place, after a tap changer was connected, the load winding produced the bucking voltage identical with power phase.When tap changer switches, the cut-through switch that does not turn-off, is adjacent except that switch to be cut of former connection is promptly connected, output voltage produces a variable Δ U, this moment two on-states that exist together adjacent switch between cross-over connection be two with the reactor windings that are in series, the induction reactance of this winding [ω L] the return rings current limit that forms between two switches within the design load scope.Turn-off the former connection switch that removes to be cut, output voltage produces a variable Δ U again.Each tap changer stepping like this is switched, and repeats and reproduction process and state as above, and output voltage is being higher than stepped on the input voltage basis.Switch the contact loop and make switch realize keeping when stepping is switched the compensation winding not interrupt and do not produce not short circuit between mutual inductance overvoltage, the switch and do not produce overcurrent, output voltage has increased level-on variable when making switch, particularly electronic switch and winding obtain conservation of nature.When the terminal institute of compensation winding connects that switch is connected separately, one of them phase-change switch desire is changeed when cutting, commutation contact circuit switching is at first connected, output voltage produces a variable Δ U, the phase-change switch of former connection closes has no progeny, inserting switch connects again, output voltage produces a variable Δ U again, and this moment, output voltage equaled input voltage.After another phase-change switch is cut with the same manner commentaries on classics, 180 ° of compensation winding phase change, output voltage produces a variable Δ U, turn-offs commutation contact circuit switching, and output voltage produces a variable Δ U again.Phase-change switch changes when cutting, and commutation contact loop keeps the compensation winding not open a way and do not produce mutual inductance overvoltage, not short circuit of phase-change switch and do not produce overcurrent, makes switch, output voltage increased level-on variable when winding obtained conservation of nature.When tap changer was proceeded the stepping switching, output voltage had been lower than stepped on the input voltage basis.When inputing or outputing end when importing high order harmonic component such as peak voltage into and disturbing, cut cutting edge of a knife or a sword, absorption by alternating current filter, both switch is implemented further protection, between power supply and load, carry out two-way purification again.
Because the switching that the present invention adopts linear reactor winding and switch to be in series has formed switch contact loop; thereby the stepping that has realized switch is switched; therefore when switch switches circuit do not interrupt, not short circuit when two adjacent switches are connected jointly; neither produce overvoltage, also do not produce overcurrent, make switch, particularly electronic switch obtain conservation of nature.The common cheap filter of forming of absorption circuit and winding; the high order harmonic components such as peak voltage that the outside is imported into are cut cutting edge of a knife or a sword, absorption; between power supply and load, implement two-way purification when switch is further protected again, be more suitable for requirement of engineering aspect reliability and the electromagnetic compatibility, meeting related standards.Because only with a reactor, switch employing stepping switching mode has not only reduced reactor, switch usage quantity, also reduce the requirement of absolute ratings such as voltage to switch, electric current, thereby both reduced cost, improved efficient again.
Description of drawings is described further several voltage regulators of the present invention below in conjunction with accompanying drawing:
Fig. 1 is a single-phase [or phase in the three-phase (down with) line map of switch step switchover type voltage regulator of the present invention.
Fig. 2 is that switch of voltage regulator shown in Figure 1 is connected separately, two equivalent circuit diagrams that adjacent switch is connected simultaneously.
Fig. 3 is voltage regulator shown in Figure 1 and elementary winding [N
1] the single phase circuit figure of the bidirectional pressure regulating device that has tapped compensator transformer [TA] to combine to form.
Fig. 4 is combine with another kind of compensator transformer [TA] the single phase circuit figure of the bidirectional pressure regulating device formed of voltage regulator shown in Figure 1.
Fig. 5 is to serve as the single phase circuit figure of the switch step switchover type bidirectional compensating voltage regulator of switching contact loop formation with tapped reactor winding.
Fig. 6 is to set up the single phase circuit figure that the winding reactor is the switch step switchover type bidirectional pressure regulating device of switching contact loop formation separately.
Fig. 7 is the equivalent circuit diagram of the interchange low pass filter of voltage regulator formation shown in Figure 1.
Fig. 8 is the equivalent circuit diagram of the alternating current filter that compensation voltage regulator forms shown in Fig. 3,4,5,6.
Fig. 9 is that a tap changer of compensation-type bidirectional voltage regulator shown in Fig. 5,6 [K] is connected separately, winding end switch [K is connected, compensated to two adjacent switches [K] simultaneously
4] get in touch with circuit switching [K with commutation
0] equivalent circuit diagram of three kinds of different circuit states connecting simultaneously.
Switch step switchover type voltage regulator shown in Figure 1 is made up of tapped transformer [T], switch [K], linear reactor [L] and AC filter capacity [C] and piezo-resistance parts such as [R].Each tap of transformer [T] winding is connected to switch [K] respectively, the one end is the common port [N] of input, output, the other end is input [A], be around in the head end and the transformer odd number [1,3,5 of a part of winding on the same linear reactor iron core ... ] institute's switch that connects [K] is connected in the tap, the end of another part winding and transformer even number [2,4,6 ... ] institute's switch that connects [K] is connected in the tap, the other end of each winding is connected to each other, become public end of reactor and output voltage regulator [a], form the switching contact loop of switch.Input, output are distinguished cross-over connection, and [this electric capacity is a kind of novel electron device by the AC filter capacitor, has double grading, when both having applied voltage and being lower than its design voltage, be rendered as the electrodeless electric capacity characteristic, when the peak value that applies voltage is higher than its design voltage, characteristic with piezo-resistance, particularly high frequency characteristics better (down together)] [C
1, C
2] and piezo-resistance [R
1, R
2] absorption circuit that is associated and forms, become the autocoupling type voltage regulator.
This voltage regulator is work like this: input [A], [N] are connected to power supply, after switch [K] in an odd number (or even number) tap is connected, output [a] had both produced respective output voltages, be connected in series winding of linear reactor [L] this moment between input, output, this winding has been formed towering type jointly with absorption circuit and exchanged low pass filter.When switch switches, the switch that removes to be cut of on does not turn-off, the even number that is adjacent (or odd number) cut-through switch is promptly connected, cross-over connection is two reactor [L] windings that are connected with the identical series system of phase place between odd number switch this moment even number switch adjacent with it, because square being directly proportional of reactor L value and the number of turn, its induction reactance [ω L] increases four times, and the voltage between two adjacent switches is relatively low, therefore loop circulation is limited at and does not produce short circuit circulation in the design load scope, its current value is by formula: I=V/ ω L decision, I is a loop circulation in the formula, V is two voltages between the adjacent switch, ω L is the induction reactance of two series connection windings, and load current is born by two switch shuntings.Simultaneously output voltage produces a variable Δ U, and its magnitude of voltage [is ignored the pressure drop (down together) of winding] by the L value decision of two windings when the L value of two windings is identical, and Δ U=V/2 had both equaled 50% of voltage between two switches.At this moment two windings that are serially connected with input, output continue to form alternating current filter with absorption circuit.The odd number switch that shutoff is to be excised, output voltage produce a variable Δ U again.Be again a switch connection this moment, and become the switch that removes to be cut that switches next time.Being serially connected in winding of reactor between input, the output has still formed with absorption circuit and has exchanged low pass filter.Switch so continues to switch, and is again that two adjacent switches are connected jointly, repeats and reproduction process and state as above, and the voltage regulator output voltage switches the generation stepped with switch.The switch handoff procedure is switched to two separately from one and connects simultaneously as walking, is switched to one simultaneously from two again and connects separately.At any time, have at least a switch to be in on-state, holding circuit is not interrupted, not short circuit between the switch, and the moment of switch connection does not produce impulse current, and the moment of shutoff does not produce anti-gesture.Both made switch, particularly electronic switch and winding obtain conservation of nature, and made output voltage increase level-on variable again, also reduced the switch usage quantity simultaneously, reduced switching voltage, the isoparametric requirement of electric current.
When inputing or outputing end when importing high order harmonic component such as peak voltage into and disturbing, the crest voltage that is higher than the absorption circuit design voltage is cut cutting edge of a knife or a sword, and voltage is positioned within the design voltage value scope of absorption circuit by mandarin orange.Wherein piezo-resistance [R] mainly absorbs sporadic low frequency broad pulse, and AC filter capacitor [C] mainly absorbs the continuity high-frequency narrow-pulse, and the high order harmonic component that is lower than the absorption circuit design voltage is then by the bypass of AC filter capacitor.When the too fast higher harmonic current of current changing rate (di/dt), then the reactor winding that is doubled by induction reactance suppresses.Both switch is implemented protection, carry out two-way purification again between power supply and load, reliability is improved and when guaranteeing, more meet the requirement of electromagnetic compatibility aspect.
Fig. 3 is Fig. 1 and elementary winding [N
1] centre tap, secondary winding [N arranged
2] be the bidirectional pressure regulating device that compound doublewound compensator transformer [TA] combines and forms.A secondary winding [N
21] head end and another winding [N
22] end be that bidirectional pressure regulating device input connects phase line of power, zero line respectively, the other end of two windings is that output voltage regulator connects the load two ends respectively, becomes the load winding.The input of automatic coupling voltage regulator [A], [N] cross-over connection are in power supply, and the elementary winding centre tap of compensator transformer [TA] is connected with the input [A] of automatic coupling voltage regulator, and its two ends are connected to the phase-change switch [K that can connect with automatic coupling voltage regulator output [a] respectively
H1, N
H2], become the compensation winding.The input of bidirectional pressure regulating device, output and compensation winding [N
1] go up cross-over connection respectively by AC filter capacitor [C
1] and piezo-resistance [R
1] and [C
2With R
2], [C
3With R
3], the absorption circuit that is in parallel and forms, this loop and load winding [N
21, N
22], compensation winding [N
1] formed alternating current filter jointly.
Voltage regulator is work like this: after input inserts power supply, as voltage regulator switch [K
1] and two phase-change switch [K
H1, N
H2] when connecting simultaneously, output voltage equals input voltage; When with load winding [N
2] compensation winding [N that phase place is identical
11] phase-change switch [K that connects
H1] connect separately, when tap changer [K] carried out the stepping switching, the voltage quantities Δ U that output produces equaled two load winding [N
21, N
22] the voltage quantities sum that produces separately, output voltage is being higher than stepped on the input voltage basis; When with load winding [N
2] compensation winding [N that phase place is opposite
12] phase-change switch [K that connects
H2] connect separately, when tap changer [K] carried out the stepping switching, output voltage had been lower than stepped on the input voltage basis.
When inputing or outputing end when importing high order harmonic component into and disturbing, the crest voltage that is higher than the absorption circuit design voltage is cut cutting edge of a knife or a sword, and its value is positioned within the design load scope of absorption circuit by mandarin orange.Wherein piezo-resistance [R] mainly absorbs sporadic low frequency broad pulse, and AC filter capacitor [C] mainly absorbs continuity high-frequency narrow-pulse voltage.The high order harmonic component that is lower than the absorption circuit design voltage is then by AC filter capacitor [C] bypass.When the too fast higher harmonic current of the rate that changes in the load current (di/dt), at compensation winding [N
1] instantaneous pressure that go up to produce is absorbed the loop short circuit and absorbs.Because load winding [N
2] adopt compound winding to be serially connected with respectively between phase line of power, zero line and the load two ends, differential mode, common mode disturbances are had same absorption, filter effect.Make outside conductibility overvoltage not constitute harm to switch, particularly electronic switch, when it is further protected, carry out two-way purification again between power supply and load, not only reliability is improved, and also more meets the requirement of electromagnetic compatibility aspect.
Fig. 4 is Fig. 1 and secondary winding [N
2] be the bidirectional pressure regulating device that compound doublewound another kind of compensation transformation [TA] combines and forms, connected mode between compound double winding, automatic coupling voltage regulator, AC filter capacitor [C], the piezo-resistance [R] is identical with Fig. 3, and that different is the elementary winding [N of compensator transformer [TA]
1] an end be connected with the centre tap of automatic coupling voltage regulator winding, the other end is connected with automatic coupling voltage regulator output [a], becomes the compensation winding.
This voltage regulator is work like this: after input inserts power supply, as the tap changer [K that is connected on the automatic coupling voltage regulator centre tap
3] when connecting, output voltage equals input voltage; When switch at [K
3] to [K
1] when interval stepping was switched, output voltage had been higher than stepped on the input voltage basis; When switch at [K
3] to [K
5] when interval stepping was switched, output voltage had been lower than stepped on the input voltage basis.Its filter action is described identical with effect and Fig. 3, needn't repeat.
Switch step switchover type compensated regulator shown in Figure 5 is by compensator transformer [TA], linear tap reactor [L], tap changer [K], phase-change switch [K
H] and part compositions such as AC filter capacitor [C] and piezo-resistance [R].Secondary winding [the N of compensator transformer [TA] wherein
21] head end and another winding [N
22] end be input, the other end of two windings is an output, becomes the load winding [N that is serially connected with between power supply and the load
2].Elementary winding [the N of compensator transformer [TA]
1] be provided with tap, its head end and the phase-change switch [K that is connected across on the power supply
H1] be connected, be connected to tap changer [K] respectively in end and each tap, become the compensation winding of voltage regulator.The other end of each tap changer [K] and another phase-change switch [K that is connected across on the power supply
H2] between be connected to linear tap reactor [L] winding, centre tap of this winding is the public end and the phase-change switch [K of reactor [L]
H2] be connected, other taps of public end one side winding respectively with compensation winding [N
1] each odd number [1,3,5 ... ] institute's tap changer that connects [K] is corresponding in the tap connects, other taps of public end opposite side winding respectively with compensation winding [N
1] each even number [2,4,6 ... ] institute's tap changer that connects [K] is corresponding in the tap connects, and becomes the switching contact loop of tap changer [K].Compensation winding [N
1] go up also cross-over connection by commutation interconnection switch [K
0] and another winding of reactor [L
0] phase-change switch [K that is in series and forms
H] change the contact loop cut.Between the phase line and zero line of voltage regulator input, output, compensation winding [N
1] go up cross-over connection respectively by AC filter capacitor [C
1] and piezo-resistance [R
1] and [C
2With R
2], [C
3With R
3], the absorption circuit that is in parallel and forms, this loop and load winding [N
2] and compensation winding [N
1] formed alternating current filter jointly.
Voltage regulator is work like this: after input inserts power supply, as two phase-change switch [K
H1, K
H2] connect with phase line of power, zero line respectively, compensation winding [N
1] be adjusted to and load winding [N
2] during the phase place equal state, after the tap changer [K] in an odd number (or even number) tap is connected, compensation winding [N
1] head end to the winding of connecting switch segments and the public end of linear reactor [L] be in series to the winding of connecting switch segments and be connected to power supply, by compensation winding [N
1] and load winding [N
2] transformation ratio [N
1/ N
2] decision, load winding [N
21, N
22] two ends produce the bucking voltage identical with power phase respectively, because N
21With N
22With being in series, the compensation of two windings is that closing of pressing equals U
2, its magnitude of voltage is by formula: U
2=U/ (N
1/ N
2) decision, U in the formula
2Be load winding [N
2] bucking voltage at two ends, U is compensation winding [N
1] supply voltage at two ends, N
1/ N
2Be the transformation ratio of two kinds of windings, the voltage regulator output voltage equals input voltage and U
2Close.When tap changer [K] switches, odd number to be excised (or even number) switch of on does not turn-off, the even number that is adjacent (or odd number) switch is promptly connected, this moment odd number switch and the adjacent even number switch on-state that exists together, cross-over connection is the access winding of the public end of linear reactor [L] both sides between two switches, because square being directly proportional of reactor L value and the number of turn, so its induction reactance [ω L] is four times of one-sided winding, and the voltage between two adjacent switches is relatively low, therefore loop circulation is limited at and does not produce short circuit circulation in the permissible value scope, its current value is by formula: I=V/ ω L decision, I is a loop circulation in the formula, V is two voltages between the adjacent switch, and ω L is the induction reactance that winding is inserted in the public end of reactor both sides.Cut-through switch has been in on-state at connection precompensation winding, so the moment that cut-through switch is connected does not produce impulse current.Because compensation winding [N
1] number of turn of two adjacent taps is unequal.After cut-through switch is connected, compensation winding [N
1] equivalence insert the number of turn and produce a variable Δ N
1, its value is by the turn ratio decision of the public end of linear reactor [L] both sides winding, Δ N when the number of turn is identical
1Equal 50% of two adjacent taps number of turn differences.By two kinds of winding transformation ratio decisions, load winding [N
2] bucking voltage produce a variable Δ U
2, it is worth by formula: Δ U
2=U/ (N
1± Δ N
1)/N
2Decision, Δ U in the formula
2Be the variable of cut-through switch connection back loading winding bucking voltage, U is compensation winding [N
1] supply voltage at two ends, N
1Be the access number of turn of cut-through switch connection precompensation winding, Δ N
1Be compensation umber of turn equivalent variable, N
2The number of turn for the load winding.By formula as seen, Δ N
1Be "+" number Δ U when both having inserted the number of turn and increasing
2Value reduces, otherwise then opposite.The voltage regulator output voltage is by formula: U
SC=Usr ± Δ U
2Decision, and be higher than stepped on the input voltage basis.Turn-off the switch that removes to be cut, compensation winding [N
1] equivalence insert the number of turn and produce a variable Δ N again
1, load winding [N
2] bucking voltage produce a variable Δ U again simultaneously
2Be again that a tap changer is connected separately this moment, and become the switch that removes to be cut that switches next time.When the excision switch turn-offed, the compensation winding still had switch to be in on-state, so it does not produce anti-gesture when disconnecting.At this moment the access winding of reactor [L] is transformed into opposite side from public end one side.Adopt to switch the contact loop and match, make process that switch switches, connect separately from one and carry out the transition to two common connections, carry out the transition to a connection separately from two common connections again as walking with tap changer.Any time; have at least a switch to be in on-state, keep the compensation winding not occur interrupting, the proof load current waveform does not distort and does not produce the mutual inductance overvoltage; not short circuit when two adjacent switches are connected simultaneously and do not produce overcurrent, thereby switch obtains conservation of nature.And output voltage respectively produces a voltage quantities when making same switch connection, shutoff, has both reduced the switch usage quantity, has reduced the requirement to switch voltage withstand class, rated current, current changing rate aspect again.
As compensation winding [N
1] the terminal tap changer [K that connects
4] connect separately, phase-change switch [K
H] when the desire commentaries on classics is cut, commutation contact circuit switching [K
0] at first connect, this loop promptly produces the loop circulation opposite with the offset current phase place, load winding [N
2] bucking voltage promptly produce the variable Δ U of a decline
2, output voltage produces the decline variable of an equivalence simultaneously.One of them phase-change switch [K
H] change when cutting, the former switch that is in on-state closes has no progeny, and the former switch that is in off state is connected again, guarantees that phase-change switch changes two not short circuits of switch when cutting, and commutation contact loop keeps the compensation winding not open a way and does not produce the mutual inductance overvoltage in the meantime.At this moment compensate winding [N
1] two ends are connected to each other and form the loop, the generation mutual inductance electric current opposite loop in the load current phase place, the bucking voltage of load winding and output voltage produce the voltage quantities Δ U of a decline simultaneously
2, two kinds of winding both end voltage reduce to zero simultaneously, and output voltage equals input voltage.Another phase-change switch [K
H] change when cutting, be that the switch that is in on-state closes and has no progeny equally, the former switch connection that is in off state still keeps the compensation winding not open a way by commutation contact loop during this and does not produce the mutual inductance overvoltage, and guarantees phase-change switch [K
H] not short circuit when commentaries on classics is cut.At this moment compensate winding [N
1] two ends connect with phase line of power, zero line respectively again, but its phse conversion 180 °, load winding [N
2] a two ends generation bucking voltage variable Δ U rising, opposite with power phase
2, output voltage produces the decline variable of an equivalence simultaneously.Turn-off commutation contact circuit switching [K
0], load winding [N
2] produce the voltage quantities Δ U of a rising again
2, output voltage produces the decline variable of an equivalence again simultaneously, and commutation so far finishes.When tap changer [K] was proceeded the stepping switching, output voltage had been lower than stepped on the input voltage basis.Its filter action is described identical with effect and Fig. 3, needn't repeat.
Switch step switchover type compensated regulator shown in Figure 6 is by compensator transformer [TA], linear reactor [L], tap changer [K], phase-change switch [K
H], parts such as AC filter capacitor [C] and piezo-resistance [R] form.Secondary winding [the N of compensator transformer [TA] wherein
21] head end and another winding [N
22] end be that the voltage regulator input connects phase line of power, zero line respectively, the other end of two windings is an output, becomes the load winding [N that is serially connected with between power supply and the load
2].Elementary winding [the N of compensator transformer [TA]
1] be provided with tap, its head end and the phase-change switch [K that is connected across on the power supply
H1] be connected, be connected to tap changer [K] respectively in end and each tap, become the compensation winding.The other end of each tap changer [K] and another phase-change switch [K that is connected across on the power supply
H2] between be connected to the winding that is around on same reactor [L] iron core, the wherein head end of a part of winding and each odd number tap [1,3,5 of compensation winding ... ] switch that connects is connected, the end of another part winding and each even tap [2,4,6 ... ] switch that connects is connected the other end of each winding and phase-change switch [K
H2] be connected, become the switching contact loop of tap changer [K], compensation winding [N
1] go up also cross-over connection by commutation interconnection switch [K
0] and another winding of reactor [L
0] phase-change switch [K that is in series and forms
H] change the contact loop cut.Between the phase line and zero line of voltage regulator input, output, compensation winding [N
1] go up cross-over connection respectively by AC filter capacitor [C
1] and piezo-resistance [R
1] and [C
2With R
2], [C
3With R
3], the absorption circuit that is in parallel and forms, this loop and load winding [N
2] and compensation winding [N
1] formed alternating current filter jointly.
Voltage regulator is work like this: as seen from Figure 6, constitute the load winding [N of this voltage regulator fundamental
2], compensation winding [N
1], phase-change switch [K
H], tap changer [K], AC filter capacitor [C] and piezo-resistance [R] and the connected mode between them be identical with Fig. 5, switching contact loop has been formed in different just being in series by many windings reactor [L] and tap changer [K], at two adjacent switches [K] when connecting jointly, cross-over connection is two reactor windings that are connected with the identical series system of phase place between two switches, its effect, effect and tap changer [K], phase-change switch [K
H], commutation interconnection switch [K
0], switching mode, opportunity, process also identical with Fig. 5, so the variation of the operating state of this voltage regulator, output voltage and filter action and Fig. 5 are identical, this part needn't repeat (can consult the relevant portion of Fig. 5 in case of necessity) for this reason.
Embodiment one, Fig. 1 tapped transformer parameter: 1KwEI type transformer core is wound with the 240V winding, is provided with 5 centre taps, and voltage is all 40V between the tap; Linear reactor [L] parameter: the equivalent capacity iron core of 380WEI type transformer is wound with the winding that 7 L values are all 10mH, L value 40mH in loop when two adjacent switches are connected jointly; Switch [K] parameter: be respectively contactless electronic switch BTA16/600V and contact relay DF4128; AC filter capacitor [C]: 5 μ F/250V; Piezo-resistance [R]: 20/K471; Connect by line map shown in Figure 1, input [A], [N] are connected to the 250V power supply, bearing power 1KW (resistive), and switch is from K
7Stepping switches to K
1, obtain the parameter of table one:
Table one
| Connect switch | Output voltage (V) | Loop circulation (A) | ||
| Connect separately | The common connection | Connect separately | The common connection | Annotate: parameter when unloaded |
| K 1 | 246 | |||
| K 1-K 2 | 229 | 3.1 | ||
| K 2 | 206 | |||
| K 2-K 3 | 188 | 3.1 | ||
| K 3 | 165 | |||
| K 3-K 4 | 147 | 3.1 | ||
| K 4 | 125 | |||
| K 4-K 5 | 106 | 3.1 | ||
| K 5 | 84 | |||
| K 5-K 6 | 64 | 3.1 | ||
| K 6 | 41 | |||
| K 6-K 7 | 20 | 3.1 | ||
| K 7 | 0 | |||
Two, Fig. 5 compensator transformer [TA] parameter: 1KwEI type transformer is wound with the benefit level winding [N of 562V respectively
1] and two secondary winding [N that are all 22V
2], elementary winding is provided with 3 centre taps, and its head end is to tap 1 voltage 212V, and tap 1 is to tap 2 voltage 64V, and tap 2 is to tap 3 voltage 114V, and tap 3 is to terminal voltage 172V; Linear reactor [L] parameter: the equivalent capacity iron core of 200WEI type transformer is wound with the tap winding, centre tap (public end) to the L value of each tap is respectively: tap 1 is 20mH, and tap 2 is 25mH, and tap 3 is 30mH, tap 4 is 35mH, commutation contact loop winding [L
0] be 40mH.Loop [L] value when two adjacent switches are connected jointly is respectively: K
1With K
2Be 80mH, K
2With K
3Be 100mH, K
3With K
4Be 120mH; Switch [K] parameter; Contactless electronic beam switch BTA16A/600V has the relay DF4128 of contact; AC filter capacitor [C] and piezo-resistance [R] parameter: 5 μ F/250V, 20K471; Be connected by line map shown in Figure 5, commutation contact loop cross-over connection in tap 2 between the end, supply voltage 210V ± 1%; Bearing power 1.5KW (resistive), switch carry out stepping by switching mode in the description of drawings and order and switch, change and cut, and obtain the parameter of table two:
Table two
| Connect switch | Output voltage (V) | Loop circulation (A) | ||
| Connect separately | The common connection | N1 is identical with the N2 phase place | N1 is identical with the N2 phase place | Annotate: parameter when unloaded |
| K 1 | 246 | 165 | ||
| K 1-K 2 | 242 | 170 | 2.2 | |
| K 2 | 238 | 175 | ||
| K 2-K 3 | 234 | 180 | 2.5 | |
| K 3 | 230 | 185 | ||
| K 3-K 4 | 226 | 189 | 3.2 | |
| K 4 | 223 | 192 | ||
| K 0-K 4 | 217 | 197 | 3.0 | |
| KH 1Or KH 2After commentaries on classics is cut | 208 | |||
Three, Fig. 6 compensator transformer [TA] parameter, switch [K], AC filter capacitor [C], piezo-resistance [R] are identical with Fig. 5; Linear reactor parameter: K
1The loop is 20mH, K
2The loop is 25mH, K
3The loop is 30mH, K
4The loop is 35mH, L
0The loop is 40mH, and the common loop L value of connecting of two adjacent switches [K] is identical with Fig. 5.Be connected by line map shown in Figure 6, other conditions are identical with Fig. 5 with switching mode, and the parameter that obtains is identical with table two.
Claims (10)
1, a kind of switch step switchover type AC voltage regulator, form by tapped transformer [T], linear reactor [L], switch [K], AC filter capacitor [C] and piezo-resistance parts such as [R], be connected to switch [K] in each tap of Transformer Winding respectively, one end of its winding is the common port [N] of voltage regulator input, output, and the other end is input [A]; It is characterized in that: be connected to the winding that is around on same linear reactor [L] iron core on the switch [K] respectively, wherein the head end of a part of winding is connected with each odd number switch that tap connects [K] of transformer [T] winding, the end of another part winding is connected with transformer [T] winding switch that each even tap connects [K], the other end of each winding is connected to each other, become the public end and the output voltage regulator [a] of reactor [L], form the switching contact loop of switch [K]; The absorption circuit that the difference cross-over connection is in parallel and is formed by AC filtering electrical equipment [C] and piezo-resistance [R] between voltage regulator input, output phase line and the zero line; When a switch [K] was connected, output [a] produced voltage, was serially connected with reactor [L] winding and the absorption circuit [C between input, the output this moment
1, R
1], [C
2, R
2] formed towering type interchange low pass filter jointly, suppress, absorb inputing or outputing next high order harmonic components such as the peak voltage interference of end conduction, both switch [K] was protected, carry out two-way purification at power supply and load again; When switch [K] switched, former connection to be cut removed that switch [K] does not turn-off, its adjacent cut-through switch [K] is promptly connected, variable Δ U of output voltage generation; At this moment between the adjacent switch of two on-states that exist together cross-over connection be two with reactor [L] windings that are in series, in the design load scope and not short circuit, this winding has been formed alternating current filter with absorption circuit again to the induction reactance of this winding [ω L] simultaneously the return rings current limit that forms between two switches; Turn-off the switch [K] that removes to be cut of former connection, output voltage produces a variable Δ U again, and reactor inserts winding and still formed with absorption circuit and exchange low pass filter; Switch [K] is so proceeded stepping and is switched; repeat and reproduction process and state as above; holding circuit was not interrupted when switching contact loop made switch realize the stepping switching; thereby the moment of switch connection does not produce impulse current; the moment of turn-offing does not produce back-emf; when switch, particularly electronic switch and winding obtained conservation of nature, output voltage had increased level-on variable again.
2, a kind of switch step switchover type AC voltage regulator is formed the elementary winding [N of compensator transformer [TA] by compensator transformer [TA], linear tap reactor [L], switch [K], AC filter capacitor [C] and piezo-resistance parts such as [R]
1] be provided with tap, its head end and the phase-change switch [K that is connected across on the power supply
H1] be connected, be connected to tap changer [K] respectively in end and each tap, the other end of each switch [K] and another phase-change switch [K that is connected across on the power supply
H2] be connected, become voltage regulator compensation winding; It is characterized in that: the secondary [N of compensator transformer [TA]
2] be compound double winding, one of them winding [N
21] head end and another winding [N
22] end be that the voltage regulator input connects phase line of power, zero line respectively, the other end of two windings is that output connects the load two ends respectively, becomes voltage regulator load winding; Compensation winding [N
1] terminal and tap changer that each tap connects [K] and phase-change switch [K
H2] between be connected to linear tap reactor [L] winding, a centre tap of this winding is public end of reactor and phase-change switch [K
H2] be connected, other taps of public end one side winding respectively with compensation winding [N
1] the corresponding connection of each odd number switch that tap connects [K], other taps of public end opposite side winding divide and compensation winding [N
1] terminal and switch that each even tap connects [K] is corresponding is connected, the loop is got in touch with in the switching that becomes tap changer [K], compensates winding [N
1] in the tap cross-over connection by commutation interconnection switch [K
0] and another winding of reactor [L
0] phase-change switch [K that is in series and forms
H] the contact loop of switching; Between the phase line and zero line of voltage regulator input, output, compensation winding [N
1] go up cross-over connection respectively by AC filter capacitor [C
1] and piezo-resistance [R
1], [C
2With R
2], [C
3With R
3] absorption circuit that is in parallel and forms, two kinds of winding [N of this loop and compensator transformer [TA]
1, N
2] formed alternating current filter jointly; As two phase-change switch [K
H1, K
H2] connect with phase line, zero line respectively, make compensation winding [N
1] be in and load winding [N
2] during the phase place equal state, after a tap changer [K] is connected, load winding [N
2] the generation bucking voltage identical with power phase; When tap changer [K] switches, the cut-through switch [K] that does not turn-off, is adjacent except that switch [K] to be cut of former connection is promptly connected, output voltage produces a variable Δ U, this moment two on-states that exist together adjacent switch [K] between cross-over connection be the access winding of the public end of reactor [L] both sides, the induction reactance of this winding [ω L] the return rings current limit that forms between two switches [K] within the design load scope; Turn-off the former connection switch [K] that removes to be cut, output voltage produces a variable Δ U again; Each tap changer [K] so stepping switches, and repeats, reproduces as above process and state, and output voltage is being higher than stepped on the input voltage basis; Switching the contact loop makes switch realize keeping when stepping is switched compensation winding [N
1] do not interrupt and do not produce not short circuit between mutual inductance overvoltage, the switch and do not produce overcurrent, output voltage has increased level-on variable again when making switch, particularly electronic switch and winding obtain conservation of nature; As the terminal switch [K that connects of compensation winding
4] connect separately, one of them phase-change switch [K
H] when the desire commentaries on classics is cut, commutation contact circuit switching [K
0] at first connect, output voltage produces a variable Δ U, and the phase-change switch of former connection closes has no progeny, and inserts switch and connects, and output voltage produces a variable Δ U again, and this moment, output voltage equaled input voltage; Another phase-change switch [K
H] with the same manner change cut after, compensation winding [N
1] phase change 180
0, output voltage produces a variable Δ U, turn-offs commutation contact circuit switching [K
0], output voltage produces a variable Δ U again; Phase-change switch [K
H] change when cutting, commutation contact loop keeps compensation winding [N
1] do not open a way and do not produce mutual inductance overvoltage, phase-change switch [K
H] not short circuit and do not produce overcurrent, make switch, output voltage had increased level-on variable again when winding obtained conservation of nature; When tap changer [K] was proceeded the stepping switching, output voltage had been lower than stepped on the input voltage basis; When inputing or outputing end when importing high order harmonic component such as peak voltage into and disturbing, cut cutting edge of a knife or a sword, absorption by alternating current filter, both switch [K] is implemented further protection, between power supply and load, carry out two-way purification again.
3, a kind of switch step switchover type AC voltage regulator is formed the elementary winding [N of compensator transformer [TA] by compensator transformer [TA], linear reactor [L], switch [K], AC filter capacitor [C] and piezo-resistance parts such as [R]
1] be provided with tap, its head end and the phase-change switch [K that is connected across on the power supply
H1] be connected, be connected to tap changer [K] respectively in end and each tap, the other end of each switch and another phase-change switch [K that is connected across on the power supply
H2] be connected, become the compensation winding of voltage regulator; It is characterized in that: the secondary [N of being of compensator transformer [TA]
2] compound double winding, one of them winding [N
21] head end and another winding [N
22] end be that the voltage regulator input connects phase line of power, zero line respectively, the other end of two windings is the two ends that output connects load respectively, becomes the load winding of voltage regulator; Compensation winding [N
1] tap changer [K] and phase-change switch [K that are connect in terminal and each tap
H2] between be connected to the winding that is around on same linear reactor [L] iron core, the wherein head end of a part of winding and compensation winding [N
1] each odd number switch that tap connects [K] is connected, the end of another part winding and compensation winding [N
1] terminal be connected the other end of each winding and phase-change switch [K with switch that each even tap connects [K]
H2] be connected, become the switching contact loop of tap changer [K], compensation winding [N
1] in the tap cross-over connection by commutation interconnection switch [K
0] and another winding of reactor [L
0] phase-change switch [K that is in series and forms
H] change the contact loop cut; Between the phase line and zero line of voltage regulator input, output, compensation winding [N
1] go up cross-over connection respectively by AC filter capacitor [C
1] and piezo-resistance [R
1], [C
2With R
2], [C
3With R
3] absorption circuit that is in parallel and forms, two kinds of winding [N of this loop and compensator transformer [TA]
1, N
2] formed alternating current filter jointly; As two phase-change switch [K
H] connect with phase line, zero line respectively, make compensation winding [N
1] be in and load winding [N
2] during the phase place equal state, after a tap changer [K] is connected, load winding [N
2] the generation bucking voltage identical with power phase; When tap changer [K] switches, the cut-through switch [K] that does not turn-off, is adjacent except that switch [K] to be cut of former connection is promptly connected, output voltage produces a variable Δ U, this moment two on-states that exist together adjacent switch between cross-over connection be two with reactor [L] windings that are in series, the induction reactance of this winding [ω L] the return rings current limit that forms between two switches within the design load scope, turn-off the switch [K] that removes to be cut of former connection, output voltage produces a variable Δ U again; Each tap changer [K] so stepping switches, and repeats and reproduction process and state as above, and output voltage is being higher than stepped on the input voltage basis; Switching the contact loop makes switch realize keeping when stepping is switched compensation winding [N
1] do not interrupt and do not produce not short circuit between mutual inductance overvoltage, the switch [K] and do not produce overcurrent, output voltage has increased level-on variable when making switch and winding obtain conservation of nature; As compensation winding [N
1] the terminal switch [K that connects
4] connect one of them phase-change switch [K separately
H] when the desire commentaries on classics is cut, commutation interconnection switch [K
0] at first connect, output voltage produces a variable Δ U, and the phase-change switch of former connection closes has no progeny, and inserts switch and connects, and output voltage produces a variable Δ U again, and this moment, output voltage equaled input voltage; Another phase-change switch [K
H] with the same manner change cut after, compensation winding [N
1] phase change 180
0, output voltage produces a variable Δ U, turn-offs commutation interconnection switch [K
0], output voltage produces a variable Δ U again; Phase-change switch [K
H] change when cutting, commutation contact loop keeps compensation winding [N
1] do not open a way and do not produce mutual inductance overvoltage, phase-change switch [K
H] not short circuit and do not produce overcurrent; make switch, output voltage had increased level-on variable when particularly electronic switch obtained conservation of nature: when tap changer [K] is proceeded stepping and is switched; output voltage is being lower than stepped on the input voltage basis: when inputing or outputing end when importing high order harmonic component such as peak voltage into and disturbing; cut cutting edge of a knife or a sword, absorption by alternating current filter; both switch is implemented further protection, carry out two-way purification at power supply and between bearing again.
4, switch step switchover type AC automatic coupling voltage regulator according to claim 1, it is characterized in that: each winding of linear reactor [L] is made up of the identical winding in parallel of phase place, the corresponding connection of paralleling switch that is connect in one end of winding in parallel and the same tap of transformer [T] winding, the other end is connected to each other, when switch switched, the paralleling switch that is connect in the same tap of transformer was connected simultaneously, is turn-offed simultaneously.
5, according to the described switch step switchover type AC automatic coupling voltage regulator of claim 1.4, it is characterized in that: each winding of linear reactor [L] is serially connected with respectively between Transformer Winding tap and the switch [K], the opposite side of each switch is connected to each other, and becomes the output [a] of automatic coupling voltage regulator.
6, according to the described switch step switchover type AC automatic coupling voltage regulator of claim 1.4.5, it is characterized in that: the winding of autotransformer [T] is respectively equipped with the step-down tap and the tap of boosting, the head end of a part of winding of linear reactor [L] is connected with odd number switch that tap connects in two kinds of taps, the end of another part winding is connected with switch that even tap connects in two kinds of taps, and constitutes autocoupling type bidirectional pressure regulating device.
7, according to the unidirectional automatic coupling voltage regulator of the described switch step switchover type of claim 1.4.5, it is characterized in that: this unidirectional automatic coupling voltage regulator combines with compensator transformer [TA] and forms compensation-type bidirectional voltage regulator, the secondary winding [N of compensator transformer [TA]
2] be compound double winding, one of them winding [N
21] head end and another winding [N
22] end be that the input of compensation-type bidirectional voltage regulator connects phase line of power, zero line respectively, the other end of two windings is that output connects the load two ends respectively, between the phase line and zero line of input, output, elementary winding [N
1] distinguish cross-over connection by AC filter capacitor [C
1, C
2, C
3] and piezo-resistance [R
1, R
2, R
3] absorption circuit that is in parallel and forms, formed alternating current filter jointly with two windings; The input of unidirectional automatic coupling voltage regulator [A] [N] is connected with phase line, zero line respectively, elementary winding [N
1] two ends are connected to can be respectively and the input [A] of unidirectional automatic coupling voltage regulator, the phase-change switch [K that output [a] is connected
H1, K
H2, K
H3, K
H4]; As tap changer [K] and phase-change switch [K
H] match when switching, the output voltage of compensation-type bidirectional purifying pressure regulator is being lower than, is equaling, is being higher than input voltage basis stepped.
8, according to the described switch step switchover type AC voltage regulator of claim 1.4.5.7, it is characterized in that: the elementary winding [N of compensator transformer [TA]
1] an end be connected with a centre tap of unidirectional automatic coupling voltage regulator, the other end is connected with the output [a] of unidirectional automatic coupling voltage regulator; When tap changer [K] switched, the output voltage of compensation-type bidirectional purifying pressure regulator is stepped on the basis that is lower than, equals, is higher than input voltage.
9, according to the described switch step switchover type AC voltage regulator of claim 1.4.5.7, it is characterized in that: the elementary winding [N of compensator transformer [TA]
1] having centre tap, this tap is connected with the input [A] of unidirectional automatic coupling voltage regulator, and its two ends are connected to the phase-change switch [K that can connect with the output [a] of unidirectional automatic coupling voltage regulator respectively
H1, K
H2]; Tap changer [K] and phase-change switch [K
H] match when switching, the output voltage of compensation-type bidirectional purifying pressure regulator is being lower than, is equaling, is being higher than stepped on the input voltage basis.
10, according to the described switch step switchover type AC voltage regulator of claim 1.4.5.6.7, it is characterized in that: two-way automatic coupling voltage regulator combines with compensator transformer [TA] and forms the compensation-type bidirectional purifying pressure regulator, the input of two-way automatic coupling voltage regulator [A], [N] send out and do not connect phase line of power, zero line, the elementary winding [N of compensator transformer
1] end is connected with the input [A] of two-way automatic coupling voltage regulator, the other end is connected with output [a]; When tap changer [K] switched, the output voltage of compensation-type bidirectional purifying pressure regulator had been lower than, is equaling, is being higher than stepped on the input voltage basis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610138376 CN1945950A (en) | 2006-11-10 | 2006-11-10 | Switch step switchover type AC voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610138376 CN1945950A (en) | 2006-11-10 | 2006-11-10 | Switch step switchover type AC voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1945950A true CN1945950A (en) | 2007-04-11 |
Family
ID=38045199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610138376 Pending CN1945950A (en) | 2006-11-10 | 2006-11-10 | Switch step switchover type AC voltage regulator |
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| Country | Link |
|---|---|
| CN (1) | CN1945950A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240923A (en) * | 2013-06-18 | 2014-12-24 | 罗伯特·博世有限公司 | An electrical device and electric device therewith |
| CN105895343A (en) * | 2016-06-08 | 2016-08-24 | 国网青海省电力公司 | Automatic voltage increase and decrease transformer |
| CN108418232A (en) * | 2018-03-28 | 2018-08-17 | 南京新联能源技术有限责任公司 | Phase-change switch short circuit automatic bypass device |
-
2006
- 2006-11-10 CN CN 200610138376 patent/CN1945950A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240923A (en) * | 2013-06-18 | 2014-12-24 | 罗伯特·博世有限公司 | An electrical device and electric device therewith |
| CN104240923B (en) * | 2013-06-18 | 2018-04-24 | 罗伯特·博世有限公司 | Electric components and the electrical equipment with such electric components |
| CN105895343A (en) * | 2016-06-08 | 2016-08-24 | 国网青海省电力公司 | Automatic voltage increase and decrease transformer |
| CN108418232A (en) * | 2018-03-28 | 2018-08-17 | 南京新联能源技术有限责任公司 | Phase-change switch short circuit automatic bypass device |
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Open date: 20070411 |