CN106300643A - The seamless switching circuit of three-phase full-automatic AC battery saving arrangement - Google Patents

The seamless switching circuit of three-phase full-automatic AC battery saving arrangement Download PDF

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Publication number
CN106300643A
CN106300643A CN201610833603.9A CN201610833603A CN106300643A CN 106300643 A CN106300643 A CN 106300643A CN 201610833603 A CN201610833603 A CN 201610833603A CN 106300643 A CN106300643 A CN 106300643A
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CN
China
Prior art keywords
switch
circuit
battery saving
saving arrangement
automatic
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Granted
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CN201610833603.9A
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CN106300643B (en
Inventor
王振铎
白熠
范晓姣
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Erdos Tai Kun Electrical Appliance Technology Co.,Ltd.
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王振铎
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/067—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems using multi-primary transformers, e.g. transformer having one primary for each AC energy source and a secondary for the loads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Abstract

The invention discloses the seamless switching circuit of a kind of three-phase full-automatic AC battery saving arrangement, this circuit includes main circuit and control circuit.Described three-phase full-automatic AC battery saving arrangement is to have employed the technological means such as seamless switching, three-phase equilibrium, intelligent pressure regulating, automatic capacity transfer to realize the functions such as energy-conservation, voltage stabilizing, raising power supply quality.Described main circuit is mainly made up of pressure regulator, transformator and switch, by the Guan Bi of conservative control main circuit breaker in middle and disconnection order, it is achieved battery saving arrangement bypasses the seamless switching with power save mode.Described control circuit is made up of switching circuit, clock generating circuit, switch driving circuit, and output drive signal drives the switch of control circuit, closing in order and disconnecting by control circuit on-off control main circuit switch.The present invention can break down at battery saving arrangement, automatically switches to mains-supplied in the case of impact loading electricity consumption or damaging device further, i.e. realizes energy-conservation and non-energy-conservation automatic seamless switching, it is ensured that the safety of power supply and stability.

Description

The seamless switching circuit of three-phase full-automatic AC battery saving arrangement
Technical field
The present invention relates to the bypass switch technology field of battery saving arrangement, be related specifically to a kind of three-phase full-automatic AC economize on electricity The seamless switching circuit of device.
Background technology
Three-phase full-automatic AC battery saving arrangement is by technology such as intelligent pressure regulating, automatic capacity transfer, three-phase equilibrium, efficiency optimizations Realize the functions such as energy-conservation, voltage stabilizing, optimization power supply quality, extension device service life, and then enterprise can be reduced to greatest extent Operation cost.But when battery saving arrangement run occur abnormal, will to self or time load causes damage, for ensure Electrical Safety with And the normal table of electrical equipment runs, need to seamlessly switch to energy-saving mode in time bypass mains-supplied pattern.
The present invention is solution the problems referred to above and invents, can be when battery saving arrangement breaks down, it is achieved supplied by battery saving arrangement Electricity, to the seamless switching of bypass mains-supplied, neither affects the safe and stable operation of load, does not the most hinder the peace to faulty equipment Full maintenance.
Summary of the invention
Three-phase full-automatic AC battery saving arrangement needs to access after civil power smooth starting loads, and enters energy-saving mode；Sending out It is switched to mains-supplied by Bypass Control when raw fault or interruption maintenance, enters non-energy-saving mode.For making two kinds of moulds In the handoff procedure of formula, load can be the most charged properly functioning, need to use the technological means of seamless switching.
The present invention is made up of main circuit and control circuit two parts.By each switch in control circuit output main circuit Control signal, makes the orderly action of switch of main circuit, it is achieved that battery saving arrangement nothing under two kinds of mode of operations of economize on electricity and bypass Seaming and cutting are changed, and enable electrical equipment safe and highly efficient operation, preferably reach the purpose of green energy conservation.
The present invention is to be achieved through the following technical solutions purpose and the requirement of above-mentioned seamless switching:
Described control circuit includes switching circuit, clock generating circuit and switch driving circuit.In switching circuit by Multiple diodes constitute two OR circuits, or the input of door is respectively energy saver mode and selects signal, Electricity-saving button to control letter Number, and bypass button control signal, fault-signal.The most energy-conservation button and bypass button are interlocked relationship, then any instant is only Can have OR circuit output useful signal " 1 ", this useful signal can trigger corresponding counting circuit counting, meter through peaker The output of number circuit is in control circuit the sequential control signal of each switch, and switch used here both can be relay Device, it is also possible to be catalyst, the simply switch in main circuit, the electric current of the switch that its current capacity is greater than in control circuit holds Amount.Clock generating circuit uses time-base integrated circuit and frequency dividing circuit to obtain the clock of above-mentioned counting circuit.Switch drive Circuit uses driving integrated circuit to realize, and improves the security reliability of switch motion.
Described main circuit is made up of pressure regulator, transformator, switch, and wherein the switch of main circuit can be selected for Large Copacity, height The relay of performance or catalyst.Described pressure regulator range of regulation width, precision is high；Described transformer primary side has two taps, Can need to automatically switch according to voltage-regulation, and the switch normally-closed contact that enters through of transformator is connected with output voltage regulator, It is connected with bypass by normally opened contact, so automatically transformator input side can be switched to when pressure regulator generation abnormal conditions Bypass, and do not affect the power-saving running of load；In main circuit, pressure regulator and transformator supplies with the use of can realize load respectively The coarse adjustment of piezoelectric voltage and fine tuning, make supply voltage realize the effect of fine adjustment.
In main circuit, the switch for bypass with energy-conservation seamless switching has 3, is controlled accordingly by control circuit respectively On-off control action processed, its be separately mounted to bypass on, battery saving arrangement pressure regulation input side and the outlet side of battery saving arrangement.In economize on electricity With the transformation process of bypass, control circuit part export orderly switching drive signal, allow control switching sequence occur dynamic Make, and then 3 in conservative control main circuit switch Guan Bi and the disconnection order of switch, it is ensured that load end is stably supplied all the time Electricity, i.e. realizes the seamless switching of economize on electricity and bypass.
The beneficial effects of the present invention is:
1. supply voltage regulation use pressure regulator and transformator with the use of, it is achieved the coarse adjustment of voltage and fine tuning；
2. there is bypass, the function of energy-conservation two state seamless switchings, it can be ensured that load long-term safety is run, and is easy to joint The security maintenance of energy equipment；
3. transformer primary side is a point tap, voltage change range width, and can realize according to actual needs automatically switching；
4. transformator input side is connected by switch normally-closed contact with pressure regulator outlet side, with mains-supplied side by switch Normally opened contact connects, so can be when pressure regulator breaks down, and transformator automatically switches to bypass power supply, and does not affect load Power-saving running；
5. battery saving arrangement bypass both can be realized by hand push button with the switching of energy-conservation two states, it is also possible to by energy-conservation It is automatically obtained with the signal of telecommunication of failure bypass.
Accompanying drawing explanation
Fig. 1 is main circuit schematic diagram.
Wherein AX, BX, CX are three-phase regulator；C1, C2, C3 are three-phase transformer；KM1, KM2, KM3, KM4, KM5 are Switch；1, the 2 difference normally-closed contact of representation switch, normally opened contact；U, V, W represent three-phase electricity, and N is zero line.
Fig. 2 is switching circuit schematic diagram.
Wherein JN0 is energy-saving mode control signal；JN1 is the triggering signal of energy-saving mode；JN-K is Electricity-saving button JN's Normally opened contact；JN-B is the normally-closed contact of Electricity-saving button JN；PL-K is the normally opened contact of bypass button PL；PL-B is bypass button The normally-closed contact of PL；GZS0 is fault-signal；GZS is false trigger signals；B1～B5 is the output signal of enumerator IC4；A1 ～the output signal that A5 is enumerator IC3；CLK is the clock signal of enumerator；JD is the control signal of energy-saving run；FJN is The control signal that bypass runs.
Fig. 3 is clock generating circuit schematic diagram.
Wherein IC10 is time-base integrated circuit；IC11 is frequency divider.
Fig. 4 is switch driving circuit schematic diagram.
Wherein J3, J4, J5 are the control signal of switch JD3, JD4, JD5；J3_OUT, J4_OUT, J5_OUT are switch The driving signal of JD3, JD4, JD5；TJD is pressure regulator motor on off control signal；TJD_OUT is that pressure regulator motor drives letter Number；TGZ is pressure regulator fault-signal；TGZ_OUT drives signal for switch JD1；ABT is transformer voltage ratio switching signal；ABT_ OUT drives signal for switch JD2.
Fig. 5 is the control circuit figure of control circuit switch JD1, JD2, JD3, JD4, JD5.
Fig. 6 is the control principle drawing of main circuit switch KM1, KM2, KM3, KM4, KM5.
Wherein L is live wire；N is zero line.
In above-mentioned accompanying drawing: RXXRepresent resistance；CXXRepresent electric capacity；DXXRepresent diode；ICXXRepresent integrated circuit.And it is each The part that in figure, label is consistent all represents identical signal.
Detailed description of the invention
To coordinate accompanying drawing that main circuit and the control circuit part of the present invention are elaborated below.The present embodiment be with Implement under premised on technical solution of the present invention, provide detailed embodiment, but under protection scope of the present invention is not limited to State embodiment.
1. main circuit
Main circuit part is mainly by pressure regulator AX, BX, CX, transformator C1, C2, C3, and switch KM1～KM5 forms, here Switch KM1～KM5 can be relay can also be catalyst, as shown in Figure 1.Wherein KM1～KM3 in being main circuit energy-conservation with Bypass changeover switchs, and KM4 is pressure regulator outlet side, i.e. transformator primary side input controls switch, under pressure regulator normal condition, Its output voltage supply transformator primary side input, when pressure regulator breaks down, switch KM4 obtains electric, and normally opened contact closes, and makes Transformator disconnects the connection with pressure regulator, and transfers to and continuing by mains-supplied, thus does not affect pressure-transforming energy-saving and run.Switch KM5 Switch is selected for transformer voltage ratio.
During load electrifying startup, being first to be run by mains-supplied, now battery saving arrangement is operated in bypass, and only bypass is opened Close KM2 and be in obtain electric attracting state, and switch KM1, KM3～KM5 the most not electric, be in the normal state, i.e. pressure regulator AX, BX, CX's Input side is opened a way, and its outlet side is connected with the primary side of transformator C1, C2, C3 by the normally-closed contact of switch KM4 respectively, becomes Depressor secondary side exports load through switch KM1, and the most now pressure regulator and transformator all do not have transformation to export supply load, negative Carry by mains-supplied.
After the normal startup of load, can be transformed into, by bypass mains-supplied, the energy-saving mode that battery saving arrangement is powered, now, control After circuit receives power saving signal, the driving signal of exportable main circuit switch so that it is sequence of movement is: KM1 obtain electric Guan Bi- KM2 dead electricity disconnects-KM3 and obtains electric Guan Bi, and in power saving process, if pressure regulator breaks down, can move by controlling switch KM4 Make, make the input side of transformator automatically switch in bypass by the normally opened contact of switch KM4, so do not interfere with load and continue Run in a power saving mode.When battery saving arrangement occurs other faults in running, control circuit is by the switch drive of output main circuit Signal so that it is sequence of movement is: KM3 dead electricity disconnects-KM2 and obtains the disconnection of electric Guan Bi-KM1 dead electricity.
Can be obtained by above-mentioned analysis, battery saving arrangement with the handoff procedure of bypass, switchs KM1 and KM2 alternating movement in economize on electricity, I.e. both any instant one necessarily be in closure state, load end the most just can be made to power uninterruptedly, it is achieved seamless switching, Threephase switch KM3 is for controlling the power supply of pressure regulator, and to switch KM2, KM3 be interlocked relationship, can avoid being closed at causing Short trouble, switch KM4 is for switching the supply input of each transformator, and KM5, for controlling the no-load voltage ratio switching of each transformator, makes Voltage regulation limits is wider, more flexible.
2. control circuit
Control circuit mainly includes switching circuit, clock generating circuit, switch driving circuit, the switch of final output Drive signal can indirectly control the orderly action of switch of main circuit, and then realize the function of seamless switching.Below will be respectively in connection with Physical circuit elaborates:
(1). switching circuit
As in figure 2 it is shown, diode D21～D24, D38, D39 constitute two OR circuits, wherein JN0 is energy-saving mode Select signal；JN-K is the normally opened contact of Electricity-saving button JN, and JN-B is the normally-closed contact of Electricity-saving button JN；PL-K is bypass button PL normally opened contact, PL-B is the normally-closed contact of bypass button PL；GZS0 is the fault-signal of battery saving arrangement, can be that three-phase is uneven The aggregation of the fault-signals such as weighing apparatus, phase shortage, motor rotation blockage.From circuit, economize on electricity and bypass all can self-starting, respectively by joint Signal of telecommunication JN0 and fault-signal GZS0 set realize, it is also possible to realize manually cutting by Electricity-saving button JN and bypass button PL Change.
In actual application, bypass changeover has two ways to energy-conservation: one is can to arrange battery saving arrangement delayed tens seconds After, automatically by bypass changeover to energy saver mode, method is by energy-conservation signal JN0 time delay set, then passes it through RC peaker And not circuit, as in figure 2 it is shown, output as or an input signal of door；Two is by pressing energy-conservation button JN, manually cutting Change power save mode, the normally opened contact JN-K Guan Bi of the most energy-conservation button, connect with the normally-closed contact PL-B of bypass button, output signal As or another road input of door, both modes all can make or door output JD be high pulse signal (corresponding, another or Door output FJN is low level " 0 " signal), it is connected to the clear terminal of trigger IC1 so that it is reset, be simultaneously connected to trigger The set end of IC2 so that it is output high level " 1 ", then enumerator IC3 resets, and enumerator IC4 starts counting up, counting clock CLK Often arrive a rising edge, and enumerator IC4 output adds 1, and i.e. output signal B1～B5 are by set in turn, and B1～B5 is switch Obtaining the control signal of electric Guan Bi, control main circuit switch KM1 closes indirectly, KM2 disconnects, KM3 closes, pressure regulator electric motor starting, Make load power-saving running.
When battery saving arrangement breaks down or maintainer needs maintenance down, battery saving arrangement need to by energy-saving mode automatically or It is manually switched to bypass, and it is properly functioning not affect load-side.Therefore the normally-closed contact JN-B of energy-conservation button and bypass button Series arm and the fault-signal GZS0 of normally opened contact PL-K constitute OR circuit, when fault-signal being detected, i.e. GZS0 is Time " 1 " or artificially press bypass button PL, then or door output FJN obtains high pulse signal, JD is low level " 0 " simultaneously.So FJN is signally attached to trigger IC1 set end so that it is output Q is " 1 ", is reset by enumerator IC4, and the RST of enumerator IC3 Reset terminal obtains a high level pulse so that it is start counting up after clearing, and output signal A1～A5 are the control that switch dead electricity disconnects Signal processed, control pressure regulator motor stops indirectly, main circuit switch KM3 disconnects, KM2 Guan Bi, KM1 disconnect, and makes battery saving arrangement cut Change to bypass, the most both do not interfered with the properly functioning of load, and also will not hinder the safety inspection of battery saving arrangement, if there is event Barrier, after pending fault is got rid of, can make load continue power-saving running, and bypass button PL and energy-conservation button JN by pressing Electricity-saving button For interlocking, any time only one of which be electric closure state.
(2). clock generating circuit
IC10 is time-base integrated circuit, output square-wave signal through IC11 frequency dividing circuit divide after obtain enumerator IC3, The clock signal clk of IC4, as it is shown on figure 3, wherein diode D26, D27, D28 and resistance R76 constitute OR circuit, i.e. when A5, The output Q6 three of B5, IC11 arbitrary for high level " 1 " time, IC11 i.e. resets, and then Fig. 2 Counter IC3, IC4 stop meter Number, in main circuit, all switches keep current state until again receiving bypass or energy-conservation switching signal.
(3). switch driving circuit
As shown in Figure 4, the clearing of trigger IC9, IC8, IC7, IC5 controls R end enumerator IC3 the most as shown in Figure 2 Output signal A4, A3, A2, A1 control, its set control S end enumerator IC4 respectively the most as shown in Figure 2 output signal B1, B2, B3, B4 control, and as the above analysis, during bypass trochanter energy, enumerator IC3 resets, and enumerator IC4 counts, then scheme In 4, each trigger output Q end will be set in bypass turns power save mode successively, i.e. signal J3, J4, J5, TJD will in order It is sequentially output high level " 1 ", is then passed through switch driving circuit IC12, be sequentially output main circuit switch and obtain electric driving signal J3_OUT, J4_OUT, J5_OUT and TJD_OUT, and be that output low level is effective.Wherein J3_OUT, J4_OUT, J5_OUT are respectively For driving the control of main circuit breaker in middle KM1, KM2, KM3 to switch JD3, JD4, JD5；TJD_OUT is used for driving in main circuit The motor start switch of pressure regulator AX, BX, CX.TGZ, ABT are respectively pressure regulator fault-signal and transformer voltage ratio switching signal, It is high level effective.
JD1～JD5 is respectively the control switch of main circuit breaker in middle KM1～KM5 as shown in Figure 5, and it can be relay, Catalyst, switching drive signal J3_OUT～J5_OUT of Fig. 4 output can also be selected to be the driving letter of switch JD3～JD5 Number, when J3_OUT～J5_OUT is sequentially output as " 0 " in bypass turns power save mode, switch JD3～JD5 coil obtains successively Electricity, its normally opened contact adhesive, normally-closed contact disconnects, the most as shown in Figure 6, when in main circuit, bypass seamlessly switches to power save mode, Action sequence is: KM1 adhesive, KM2 disconnection, KM3 adhesive.And switching KM2 Yu KM3 is interlocked relationship, therefore needs KM2 The coils connected in series of normally-closed contact and KM3, by the coils connected in series of the normally-closed contact of KM3 Yu KM2.And when in Fig. 4, TGZ is " 1 ", I.e. pressure regulator breaks down, and switch JD1 coil obtains electric adhesive as shown in Figure 5, then as shown in Fig. 6 and Fig. 1, and main circuit switch KM4 Normally opened contact closes, and transformator turns by bypass power supply；When ABT is " 1 " in Fig. 4, illustrates to need switching transformer no-load voltage ratio, then scheme 5 breaker in middle JD2 coils obtain electric adhesive, main circuit switch KM5 normally opened contact adhesive.
On the contrary, energy-conservation cut bypass during, Fig. 2 Counter IC4 reset, IC3 count, then in Fig. 4 each trigger Device output Q end will be cleared successively, i.e. signal TJD, J5, J4, J3 will be sequentially output low level " 0 " in order, be then passed through out Close drive circuit IC12, output voltage regulator motor start switch and main circuit breaker in middle KM1, KM2, KM3 control switch JD3, Dead electricity signal TJD_OUT=J5_OUT=J4_OUT=J3_OUT=" 1 " of JD4, JD5, then the motor of pressure regulator quits work, Meanwhile, as shown in Figure 5 and Figure 6, being appreciated that the magnet exciting coil dead electricity successively of switch JD5, JD4, JD3, its normally opened contact disconnects, Normally-closed contact adhesive, the most now the sequence of movement of switch KM1～KM3 in main circuit is: KM3 disconnection, KM2 adhesive, KM1 break Open.So, battery saving arrangement just seamlessly switches to bypass operation.
Last it should be understood that above are only embodiments of the invention, it is not that embodiments of the present invention are carried out Limit, every utilize description of the invention and accompanying drawing content, the present invention is applied to other correlative technology fields, all should contain Among protection scope of the present invention.

Claims (3)

1. the seamless switching circuit of three-phase full-automatic AC battery saving arrangement includes main circuit and a control circuit, described main circuit It is made up of pressure regulator, transformator, switch；Described control circuit is by switching circuit, clock generating circuit and switch drive electricity Road is constituted；It is characterized in that: by the driving signal of control circuit output control switch, make control switch and then control main circuit The orderly open and close of switch, it is achieved battery saving arrangement can seamless switching in economize on electricity is changed with non-economize on electricity (bypass).
The seamless switching circuit of a kind of three-phase full-automatic AC battery saving arrangement the most according to claim 1, it is characterised in that: Pressure regulator output in described main circuit is connected with transformer primary side input side by switch normally-closed contact, transformer primary side simultaneously Input is connected with bypass by switch normally opened contact, makes in the normal energy-saving run of equipment, pressure regulator and transformator with the use of Realize coarse adjustment and the fine tuning of voltage, and during pressure regulator fault, transformator input side can switch to bypass power supply.
The seamless switching circuit of a kind of three-phase full-automatic AC battery saving arrangement the most according to claim 1, it is characterised in that: Described transformer primary side is a point tap form, can need by switch switching no-load voltage ratio according to actual pressure regulation, thus expand pressure regulation model Enclose.
CN201610833603.9A 2016-09-06 2016-09-06 The seamless switching circuit of three-phase full-automatic AC battery saving arrangement Active CN106300643B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112977511A (en) * 2019-12-16 2021-06-18 中车唐山机车车辆有限公司 Rail train's air conditioning system control circuit and rail train

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201142593Y (en) * 2007-11-30 2008-10-29 唐云雄 Low-electromagnetic interference power supply circuit
CN202949277U (en) * 2012-11-05 2013-05-22 安徽国科电力设备有限公司 Low-voltage switching circuit
CN206135528U (en) * 2016-09-06 2017-04-26 王振铎 Full -automatic interchange power saving device's of three -phase seamless handover circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201142593Y (en) * 2007-11-30 2008-10-29 唐云雄 Low-electromagnetic interference power supply circuit
CN202949277U (en) * 2012-11-05 2013-05-22 安徽国科电力设备有限公司 Low-voltage switching circuit
CN206135528U (en) * 2016-09-06 2017-04-26 王振铎 Full -automatic interchange power saving device's of three -phase seamless handover circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112977511A (en) * 2019-12-16 2021-06-18 中车唐山机车车辆有限公司 Rail train's air conditioning system control circuit and rail train
CN112977511B (en) * 2019-12-16 2022-07-26 中车唐山机车车辆有限公司 Rail train's air conditioning system control circuit and rail train

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