CN206461544U - Full-automatic AC electric motor electricity-saving device - Google Patents
Full-automatic AC electric motor electricity-saving device Download PDFInfo
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- CN206461544U CN206461544U CN201620818666.2U CN201620818666U CN206461544U CN 206461544 U CN206461544 U CN 206461544U CN 201620818666 U CN201620818666 U CN 201620818666U CN 206461544 U CN206461544 U CN 206461544U
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- 238000004134 energy conservation Methods 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
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- 230000000052 comparative effect Effects 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000008054 signal transmission Effects 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model discloses a kind of full-automatic AC electric motor electricity-saving device, mainly it is made up of main circuit and control circuit, its main circuit mainly includes：Bypass/energy-conservation change-over switch, sub-connecting switch of transformer and multi-tap transformer, it is characterised in that：Bypass/energy-conservation change-over switch has two, it is separately mounted to the primary side input side and secondary outlet side of transformer, shunting switch is connected with each tap of transformer respectively, and the action of shunting switch is controlled by control circuit output signal, and the signal transmission between control circuit and main circuit is connected by signal wire.The utility model is by gathering the power factor in electric motor operation come real-time regulation motor supply voltage.Voltage-regulation uses auto-transformer multi-tap form, ac motor actual power factor is compared with the multiple reference values set, the corresponding tap of comparative result control gating transformer, change the transformation ratio of transformer, change the output voltage of transformer, the actual power demand for making it meet load.
Description
Technical field
The utility model is related to a kind of electric motor electricity-saving device, more particularly to a kind of full-automatic AC motor electricity saving dress
The energy-saving technical scheme put, belongs to power-saving technology and electronic circuit design field.
Background technology
Economy Development, electric power is leading.In recent years, developing rapidly with China's economy, many developed areas go out
Show the electric power nervous situation that supply falls short of demand, this directly constrains these regional economic developments, also, in face of non-renewable
Primary energy, such as coal, oil, the exhaustion of natural gas resource, we will more be directed to the energy saving research of electrical equipment.And motor
It is a kind of highly energy-consuming power-equipment of application amount greatly, using scope extensively again, is counted according to related data, China's motor power consumption
The 60%~70% of commercial power total amount is accounted for, this is mainly due in practical application, and many motor are too greatly considered
Safe clearance, makes it be chronically at light running state so that the operating efficiency of motor is very low, so causes serious
Energy waste.Therefore, to motor carry out Energy Saving Control, the operating efficiency of lifting motor, save electricity for the energy increasingly
Rare today's society has very important practical significance, is also very urgent crucial behave.
It is well known that the operational efficiency of motor is relevant with load, when motor is run near nominal load,
Efficiency and power factor are all very high, but when load factor is relatively low, its power factor and efficiency all drastically decline, and according to exchange
Asynchronous motor working characteristics, operational efficiency highest of its power factor 0.8 or so, and running speed is by the size shadow of voltage
Ring little, thus the utility model uses the control mode of pressure regulating energy-saving, i.e., joined by the electricity gathered in motor running
Amount, obtains power factor actual value, is then compared with setting value, and the tap of comparative result control multi-tap transformer is opened
Close, change the output voltage values of transformer, the supply voltage of motor is followed the change of load and is changed, so just can be reasonable
Realize the purpose of pressure regulating energy-saving.
Utility model content
The utility model be for solve motor practical application in operational efficiency it is very low, the problem of power consumption is very big
And invent design.Full-automatic AC electric motor electricity-saving device is main to be made up of main circuit and control circuit.Wherein main circuit bag
Include：Bypass/energy-conservation change-over switch, sub-connecting switch of transformer (electric switch or electronic switch), transformer etc.；Control circuit bag
Include：Electric parameter of electric motor Acquisition Circuit, power factor obtain circuit, window comparator circuit, switch driving circuit, zero passage detection and
Failure detector circuit etc..
The bypass start-up and section of battery saving arrangement can be achieved by the orderly switching of three switches in the utility model main circuit
The bumpless transfer that can be run；High voltage side of transformer is designed using multi-tap, and the selection of each transformation ratio is by dividing for being connected with tap
Switch control is connect, and the control signal of shunting switch comes from control circuit.
Voltage, the collection of current signal in utility model control circuit realiration motor running, actual power factor
Calculate, the comparison of power factor actual value and setting value, comparative result passes through associated driver circuitry driving transformer shunting switch,
Realize and real-time pressure regulating energy-saving is changed according to load, zero cross detection circuit makes sub-connecting switch of transformer be acted in zero crossing, it is ensured that open
The security reliability of pass action, reduction even avoids the impact of overvoltage from endangering.Failure detector circuit real-time inspection and control signal,
Bypass power supply can be automatically switched to when exception occurs for control signal or switch motion, prevents incorrect switching from causing the event such as short circuit
Barrier, while being also convenient for timely, the security maintenance of battery saving arrangement under conditions of not influenceing to load normally operation.
The beneficial effects of the utility model：
1. motor can be made to realize the seamless switching that bypass mains-supplied operation is run with pressure regulating energy-saving；
2. being changed according to load, the multistage for realizing motor supply voltage using auto-transformer multi-tap form is effectively adjusted
Section, so as to improve the operational efficiency of motor, greatlys save electric energy；
3. main circuit, which bypasses/saved change-over switch and sub-connecting switch of transformer, has multiple choices, the work longevity can select
Life length, the electric switch or small volume, reaction speed of the high reliability such as contactor, relay for being swift in motion are fast
The contactless electronic beam switch such as controllable silicon, IGBT, Darlington transistor；
4. transformer multi-tap is designed, each voltage gear for exporting transformer is relative with each power factor setting value
Should；
5. switch motion is had more safety and stability using zero cross detection circuit；
6. using failure detector circuit ensure that bypass power supply can be switched to during battery saving arrangement failure in time, without influenceing load
Safe operation, while can also facilitate maintenance personal's quick lock in trouble point, carry out working service.
Brief description of the drawings
Fig. 1 is the main circuit schematic diagram of full-automatic AC electric motor electricity-saving device.
Wherein：KM1, KM2, KM3 are bypass/energy-conservation change-over switch；C1, C2 are multi-tap transformer；K11、K12、K13、
K14 is transformer C1 shunting switch；K21, K22, K23, K24 are transformer C2 shunting switch.
Fig. 2 is the theory diagram of power factor comparison circuit.
Wherein：1- logic circuits；2- drive circuits；3- sub-connecting switch of transformer.
Fig. 3 is silicon control zero-cross triggers circuit schematic diagram.
Wherein：T11, T12 are controllable silicon both end voltage signal；QD1 is transformer gear selection signal；G11, G12 are can
Control silicon control pole signal；Q1 is NPN type triode；Uxx is integrated circuit；Cxx is electric capacity；Rxx is resistance.
Embodiment
Below accompanying drawing will be coordinated to elaborate the utility model.The present embodiment using technical solutions of the utility model as
Under the premise of implemented, provide detailed embodiment, but protection domain of the present utility model is not limited to following embodiments.
The utility model is to be chronically at asking for the electric energy serious waste that underloading or Light Condition are caused to solve motor
Inscribe and invent design.By gathering the electric parameter of motor operation, actual power factor is obtained, power factor can reflect negative conscientiously
The situation of change of load, then by power factor actual value and setting value comparison, output comparative result control transformer point
Switch motion is connect, suitable motor voltage gear is selected, motor voltage follow is loaded real-time change, all the time
In energy-efficient running status.
The utility model is main to be made up of main circuit and control circuit.Main circuit part mainly includes bypass/energy-conservation conversion
Switch, sub-connecting switch of transformer (electric switch or electronic switch) and transformer etc., as shown in Figure 1.KM1, KM2, KM3 are in figure
Bypass and energy-conservation switching switch, rationally control its switching sequence to ensure that handoff procedure does not influence the normal operation of motor.
In bypass operation, KM2 closures, KM1 and KM3 disconnect；Bypass is when switching to energy-saving run, i.e., when battery saving arrangement starts, switch it is dynamic
Work order be：KM3 closures, KM2 disconnect, KM1 closures；When energy-conservation is switched to bypass operation：KM1 disconnects, KM2 closures, KM3 break
Open.Transformer C1, C2 primary side are multi-tap form, and K11~K14, K21~K24 are sub-connecting switch of transformer, switch control letter
Number come from control circuit, and the long conducting of B phases in three-phase electricity.
Control circuit includes：Electric parameter Acquisition Circuit, power factor are obtained and change-over circuit, comparison circuit and drive circuit
Deng.The electric parameter Acquisition Circuit is to gather the voltage and current signal in electric motor operation；Power factor is obtained by counting
Circuit, logic gates, storage circuit and D/A change-over circuits are realized；Comparison circuit is power factor actual value and setting value
Compare, as shown in Fig. 2 comparative result passes through logic circuit 1 and drive circuit 2, obtain the control signal of sub-connecting switch of transformer,
Sub-connecting switch of transformer 3 can select a variety of switches, such as relay, contactor, IGBT, Darlington transistor, controllable silicon.
It is different according to the shunting switch of selection in practical application, different drivings or triggers circuit should be used.Focus on below
Introduce thyristor gating circuit.Controllable silicon (can select bidirectional triode thyristor or by one-way SCR reverse parallel connection, this, which is sentenced, unidirectionally may be used
Exemplified by control silicon.) be a kind of large power semiconductor device, with small volume, fast, contactless reaction speed, no-spark, it is noiseless,
High efficiency, the switch advantage such as low cost.It is illustrated in figure 3 the circuit theory diagrams of silicon control zero-cross triggering.Reverse-blocking tetrode thyristor characteristic：
When controllable silicon anode potential be higher than cathode potential, and control pole added with positive trigger pulse when, controlled silicon conducting；When controllable silicon is cloudy
When electrode potential is less than maintenance electric current higher than anode potential or anode current, controllable silicon shut-off.T11, T12 are controllable silicon two in Fig. 3
Terminal voltage signal, G11, G12 are the control pole signal of two inverse parallel one-way SCRs, and U1, U2 constitute voltage follower circuit,
U3 is Zero-cross comparator circuit, and QD1 is transformer tapping gating signal, and U6 is trigger, and U7, U8, U9 are optocoupler, and the circuit is reality
It is existing, when at voltage over zero and when QD1 is high level, SCR control pole just has positive trigger signal, turns it on.Such as
This just can make the battery saving arrangement realize that dynamic response time is short, quick and the change of safe follow load, it is to avoid non-zero crossing occur
Switch the phenomenon that powerful interference will be caused to power network and enormous impact is caused to loading.
It is last it should be noted that：Embodiment of the present utility model is above are only, is implemented to of the present utility model
Mode is defined, every utilization the utility model specification and accompanying drawing content, and the utility model is applied into other related skills
Art field, it all should cover among protection domain of the present utility model.
Claims (4)
1. a kind of full-automatic AC electric motor electricity-saving device, is mainly made up of, its main circuit is mainly wrapped main circuit and control circuit
Include：Bypass/energy-conservation change-over switch, sub-connecting switch of transformer and multi-tap transformer, it is characterised in that：Bypass/energy-conservation conversion is opened
Pass has two, is separately mounted to the primary side input side and secondary outlet side of transformer, shunting switch respectively with each tap of transformer
Connect, and the action of shunting switch is controlled by control circuit output signal, the signal between control circuit and main circuit is transmitted
Connected by signal wire.
2. a kind of full-automatic AC electric motor electricity-saving device according to claim 1, it is characterised in that：The transformer is
Auto-transformer multi-tap form, i.e., according to the multiple voltage gears of electric motor operation characteristic point.
3. a kind of full-automatic AC electric motor electricity-saving device according to claim 1, it is characterised in that：The transformer point
Switch is connect to be arranged in each tap of transformer primary side.
4. a kind of full-automatic AC electric motor electricity-saving device according to claim 1, it is characterised in that：Bypass/the section
Energy change-over switch and sub-connecting switch of transformer have multiple choices, can select mechanical switch or electronic non-contact
Switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620818666.2U CN206461544U (en) | 2016-07-21 | 2016-07-21 | Full-automatic AC electric motor electricity-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620818666.2U CN206461544U (en) | 2016-07-21 | 2016-07-21 | Full-automatic AC electric motor electricity-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206461544U true CN206461544U (en) | 2017-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620818666.2U Expired - Fee Related CN206461544U (en) | 2016-07-21 | 2016-07-21 | Full-automatic AC electric motor electricity-saving device |
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| Country | Link |
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| CN (1) | CN206461544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756173A (en) * | 2017-11-01 | 2019-05-14 | 中国石油天然气股份有限公司 | Loss analysis method for pumping well motor |
-
2016
- 2016-07-21 CN CN201620818666.2U patent/CN206461544U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756173A (en) * | 2017-11-01 | 2019-05-14 | 中国石油天然气股份有限公司 | Loss analysis method for pumping well motor |
| CN109756173B (en) * | 2017-11-01 | 2021-01-29 | 中国石油天然气股份有限公司 | Loss analysis method for pumping well motor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 |