CN204068805U - A kind of motor voltage regulating energy saver - Google Patents
A kind of motor voltage regulating energy saver Download PDFInfo
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- CN204068805U CN204068805U CN201420368397.5U CN201420368397U CN204068805U CN 204068805 U CN204068805 U CN 204068805U CN 201420368397 U CN201420368397 U CN 201420368397U CN 204068805 U CN204068805 U CN 204068805U
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model embodiment discloses a kind of motor voltage regulating energy saver, comprise be arranged on a transformer core body by 1: 2 first point of transformer of capacity setting and second point of transformer, the armature winding of first point of transformer and second point of transformer is controlled by the first switches set and second switch group respectively, voltage detection unit input connects motor power input terminal voltage, the first input end of the output connection control device of voltage detection unit, current detecting unit connects the mutual inductor coil being used for induction machine electric current, second input of the output connection control device of current detecting unit, first output of controller connects the control input end of the first switches set, second output of controller connects the control input end of second switch group.The utility model is used for access point transformer in the current supply circuit of motor, by controlling the height switching on and off the three-phase mains voltage regulating motor of point transformer.
Description
Technical field
The utility model belongs to technical field of electric power, particularly a kind of motor voltage regulating energy saver.
Background technology
Motor take electric power as the power-equipment of the energy, various 380V low-tension motor, 6kV high-tension motor, 10kV high-tension motor, especially for those pump and fan general machinery equipments, its load factor is low, underload, underloading or some often need start stopping, and starting torque is large, and load torque more manufacturing machine less of nominal torque, the problem of ubiquitous low load with strong power.
For high-voltage fence, below 35kv mains supply voltage standard scope is: ve ± 7% is acceptability limit, and the critical field that the supply power voltage of motor allows is: ve ± 5%.Therefore, for 10kv electrical network, mains supply pressure scope is: 10kv ± 7%, namely 9.3kv ~ 10.7kv be qualified, and the voltage allowed band of motor is 10kv ± 5%, i.e. 9.5kv ~ 10.5kv, namely when line voltage 9.5kv, motor should be able to export rated power, and the rising of electric moter voltage, its direct result is the heating loss increasing motor, especially as motor load rate β hour, the power factor of motor is low, reactive current is large, the idle active loss caused is also large, when supplying the voltage height of motor, exciting current is in saturation condition, iron loss can be increased, at this moment suitable reduction motor terminal voltage, reduce exciting current, motor is made to move back saturation operation, not only can reduce motor fixed loss, also can improve power factor (PF) and the motor operational efficiency of motor operation, so in motor underloading or the suitable step-down of underload lower motor, motor slip ratio is made to operate near rated value, it is a kind of running status of economical and energy saving.
For most of power plant, general 6KV line voltage is all between 6.2KV ~ 6.5KV, especially night electrical network low-valley interval, may at more than 6.7KV, and 10KV electrical network big city is between 10.3 ~ 10.6KV, this voltage condition, for those underloadings and underload large-size machine, the waste of electric energy and the harm of causing to motor itself all can not be ignored, for solving this ubiquitous motor operation problem, be necessary to study in fact, to provide a kind of reliable, the solution of high-efficiency and economic.
Utility model content
For solving the problem, the purpose of this utility model is to provide a kind of motor voltage regulating energy saver, for access point transformer in the current supply circuit of motor, by controlling the height switching on and off the three-phase mains voltage regulating motor of point transformer.
For achieving the above object, the technical solution of the utility model is:
A kind of motor voltage regulating energy saver, comprise be arranged on a transformer core body by 1: 2 first point of transformer TB1 and second point of transformer TB2 of capacity setting, voltage detection unit, current detecting unit and controller, first point of transformer TB1 of low capacity is arranged on top, jumbo second point of transformer TB2 is arranged on bottom, the armature winding of first point of transformer and second point of transformer is controlled by the first switches set and second switch group respectively, armature winding is connected into star connection, asterism to be enclosed in transformer not leading-out terminal, secondary winding is connected along polarity, after series connection, tail tag knowledge leads to binding post separately, secondary winding after series connection is by reversed polarity, connect in the corresponding phase voltage loop of motor, and it is closed to form asterism by motor winding, described voltage detection unit input connects motor power input terminal voltage, the first input end of the output connection control device of voltage detection unit, current detecting unit connects the mutual inductor coil being used for induction machine electric current, second input of the output connection control device of current detecting unit, first output of controller connects the control input end of the first switches set, second output of controller connects the control input end of second switch group.
Preferably, the motor that connects is the load of underloading rate class, and the voltage change ratio of the secondary winding of first point of transformer is 8% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 16% of motor rated voltage.
Preferably, the motor that connects carries the load of rate class in being, the voltage change ratio of the secondary winding of first point of transformer is 6% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 12% of motor rated voltage.
Preferably, the motor that connects is the load of heavily loaded rate class, and the voltage change ratio of the secondary winding of first point of transformer is 4% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 8% of motor rated voltage.
Preferably, first point of transformer is identical with motor load current value with the rated current of the secondary winding of second point of transformer.
Compared with prior art, the beneficial effects of the utility model are as follows: the height change of automatically pressing motor load or line voltage, the voltage levels that break-make controls just can regulate the three-phase mains voltage of motor is carried out to the switch of a transformer winding power, thus change current of electric and motor slip ratio, make it ensure to run in the best condition, improve power factor, improve motor operational efficiency, the motor feels hot in minimizing, reduces the wastage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the motor voltage regulating energy saver of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
On the contrary, the utility model is contained any by the substituting of making on marrow of the present utility model and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the utility model, in hereafter details of the present utility model being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the utility model completely for a person skilled in the art yet.
Shown in Figure 1 is the structural representation of the motor voltage regulating energy saver of the utility model embodiment, it comprise be arranged on a transformer core body by 1: 2 first point of transformer TB1 and second point of transformer TB2 of capacity setting, voltage detection unit 101, current detecting unit 102 and controller 103, first point of transformer TB1 of low capacity is arranged on top, jumbo second point of transformer TB2 is arranged on bottom, the armature winding of first point of transformer TB1 and second point of transformer TB2 is controlled by the first switches set ZK1 and second switch group ZK2 respectively, armature winding is connected into star connection, asterism to be enclosed in transformer not leading-out terminal, secondary winding is connected along polarity, after series connection, tail tag knowledge leads to binding post separately, secondary winding after series connection enters in the corresponding phase voltage loop of motor by opposite polarities in series, and it is closed to form asterism by motor winding, described voltage detection unit 101 input connects motor power input terminal voltage, the first input end of the output connection control device 102 of voltage detection unit 101, current detecting unit 103 connects the mutual inductor coil being used for induction machine electric current, second input of the output connection control device 102 of current detecting unit 103, first output of controller 102 connects the control input end of the first switches set ZK1, second output of controller connects the control input end of second switch group ZK2.By the motor voltage regulating energy saver arranged above, motor slip ratio is calculated by controller by the supply voltage and current of electric that detect input, draw revolutional slip deviate again, and the magnitude of voltage that selected motor should input, then carry out voltage-regulation by controller control switch group.When two switch ZK1 and ZK2 are when entirely disconnecting, transformer secondary winding influence electricity kinetic potential, two winding equivalences be together in series have become a low-impedance iron-core reactor, run under the ceiling voltage that motor provides at electrical network, otherwise selected a certain winding drops into primary voltage when running, just by the voltage from electrical network by voltage ratio that winding falls, motor winding is given after step-down, can at energy-saving run under required voltage.In practical application example, the rated current arranging the secondary winding of first point of transformer and second point of transformer is equal to motor load current value.Bear the ceiling voltage of transformer between armature winding and secondary winding, secondary bears the ceiling voltage of transformer over the ground.
In an embody rule example, the motor that connects is the load of underloading rate class, and the voltage change ratio of the secondary winding of first point of transformer is 8% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 16% of motor rated voltage.By turning on and off of control ZK1 and ZK2, adjustable exports the power of motor to, specific as follows: when ZK1 and ZK2 disconnects entirely, is rated power; ZK1 connects, and when ZK2 disconnects, is 0.92 rated power; ZK1 disconnects, and when ZK2 connects, is 0.84 rated power; When ZK1 and ZK2 connects, be 0.76 rated power.
In an embody rule embodiment, the motor that connects carries the load of rate class in being, the voltage change ratio of the secondary winding of first point of transformer is 6% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 12% of motor rated voltage.By turning on and off of control ZK1 and ZK2, adjustable exports the power of motor to, specific as follows: when ZK1 and ZK2 disconnects entirely, is rated power; ZK1 connects, and when ZK2 disconnects, is 0.94 rated power; ZK1 disconnects, and when ZK2 connects, is 0.88 rated power; When ZK1 and ZK2 connects, be 0.82 rated power.
In an embody rule embodiment, the motor that connects is the load of heavily loaded rate class, and the voltage change ratio of the secondary winding of first point of transformer is 4% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 8% of motor rated voltage.By turning on and off of control ZK1 and ZK2, adjustable exports the power of motor to, specific as follows: when ZK1 and ZK2 disconnects entirely, is rated power; ZK1 connects, and when ZK2 disconnects, is 0.96 rated power; ZK1 disconnects, and when ZK2 connects, is 0.92 rated power; When ZK1 and ZK2 connects, be 0.88 rated power.
In actual implementation process, adjustable range that can be different according to the type selecting of motor.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. a motor voltage regulating energy saver, it is characterized in that, comprise be arranged on a transformer core body by 1: 2 first point of transformer TB1 and second point of transformer TB2 of capacity setting, voltage detection unit, current detecting unit and controller, first point of transformer TB1 of low capacity is arranged on top, jumbo second point of transformer TB2 is arranged on bottom, the armature winding of first point of transformer and second point of transformer is controlled by the first switches set and second switch group respectively, armature winding is connected into star connection, asterism to be enclosed in transformer not leading-out terminal, secondary winding is connected along polarity, after series connection, tail tag knowledge leads to binding post separately, secondary winding after series connection is by reversed polarity, connect in the corresponding phase voltage loop of motor, and it is closed to form asterism by motor winding, described voltage detection unit input connects motor power input terminal voltage, the first input end of the output connection control device of voltage detection unit, current detecting unit connects the mutual inductor coil being used for induction machine electric current, second input of the output connection control device of current detecting unit, first output of controller connects the control input end of the first switches set, second output of controller connects the control input end of second switch group.
2. motor voltage regulating energy saver according to claim 1, it is characterized in that, the motor that connects is the load of underloading rate class, the voltage change ratio of the secondary winding of first point of transformer is 8% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 16% of motor rated voltage.
3. motor voltage regulating energy saver according to claim 1, it is characterized in that, the motor that connects carries the load of rate class in being, the voltage change ratio of the secondary winding of first point of transformer is 6% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 12% of motor rated voltage.
4. motor voltage regulating energy saver according to claim 1, it is characterized in that, the motor that connects is the load of heavily loaded rate class, the voltage change ratio of the secondary winding of first point of transformer is 4% of motor rated voltage, and the voltage change ratio of the secondary winding of second point of transformer is 8% of motor rated voltage.
5., according to the arbitrary described motor voltage regulating energy saver of Claims 1-4, it is characterized in that, first point of transformer is identical with motor load current value with the rated current of the secondary winding of second point of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368397.5U CN204068805U (en) | 2014-07-04 | 2014-07-04 | A kind of motor voltage regulating energy saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368397.5U CN204068805U (en) | 2014-07-04 | 2014-07-04 | A kind of motor voltage regulating energy saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068805U true CN204068805U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420368397.5U Expired - Fee Related CN204068805U (en) | 2014-07-04 | 2014-07-04 | A kind of motor voltage regulating energy saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204068805U (en) |
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2014
- 2014-07-04 CN CN201420368397.5U patent/CN204068805U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Voltage regulating and energy saving device of electromotor Effective date of registration: 20161205 Granted publication date: 20141231 Pledgee: Industrial Bank Limited by Share Ltd Sanming branch Pledgor: FUJIAN AUTO ENERGY SAVING TECHNOLOGY CO., LTD. Registration number: 2016350000139 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20170704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |