CN201126997Y - High power rate motor - Google Patents
High power rate motor Download PDFInfo
- Publication number
- CN201126997Y CN201126997Y CNU2007200330064U CN200720033006U CN201126997Y CN 201126997 Y CN201126997 Y CN 201126997Y CN U2007200330064 U CNU2007200330064 U CN U2007200330064U CN 200720033006 U CN200720033006 U CN 200720033006U CN 201126997 Y CN201126997 Y CN 201126997Y
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- motor
- high power
- power rate
- electric capacity
- capacitor
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Abstract
The utility model relates to a high power motor, comprising an inductive coil of the motor; the inductive coil is connected with a capacitor. The utility model provides a high power motor with high power factor, good starting characteristic, low over-voltage level and free of maintenance, for solving the technical problem of high energy consumption and complicated device in current motor.
Description
Technical field
The utility model relates to a kind of motor, especially a kind of high power rate motor.
Background technology
0.22KV, 0.38KV, 0.66KV, 3KV, 6KV, 10KV asynchronous motor be widely used in the every field of industry, national economy such as civilian.These power of electric motor factor great majority are between 0.75 to 0.88.They will draw a considerable amount of reactive powers in the running from electrical network.These reactive powers will reduce generating efficiency, take the power transmission and transformation capacity, increase the electric energy loss in the transmission of electricity, reduce the voltage of receiving end etc., also can influence the stable of electric power system when serious.Therefore, national grid requires the user to take measures, and the power factor that comprehensively improves enterprise is more than 0.9.And its performance assessment criteria as the quality of power supply.
In order to improve the power factor of motor, mainly contain two kinds of methods at present:
1, improves natural power factor.Natural power factor is under without any the compensation situation, the power factor of power consumption equipment.The method that improves natural power factor has: 1. choose reasonable asynchronous machine; 2. avoid the power transformer light running; 3. rationally arrange and the adjusting process flow process, improve the operation conditions of electromechanical equipment; 4. under the situation that manufacturing condition allows, adopt synchronous motor to replace asynchronous motor, the power factor that the method for this raising natural power factor improves is very limited, and power factor still can't reach the requirement of power supply department.
2, adopt reactive power compensating apparatus to carry out the artificial compensation.The reactive power compensating apparatus that power consumer is commonly used is a power capacitor, claims shunt capacitor, phase shifting capacitor, electrostatic condenser again.Its capacitance current is opposite with the inductive current direction, to reach the purpose of reactive power compensation.According to the installation position of power capacitor in factory power supply system, commonly used have centralized compensation and a dispersion compensation dual mode.
Centralized compensation is capacitor to be concentrated be installed on the bus of transformer and distribution station.This compensation way is regulated the voltage of power supply buses simultaneously based on the reactive power consumption of compensator transformer.But can not the actual power factor that improves motor.And the general grouping of this compensation way is carried out, and can not follow the tracks of compensation with load change in good time.The problem that the centralized compensation mode exists is: device is complicated, and investment is big, and occupation of land is many, the operation maintenance workload is big, compensates not in placely, and the electric energy loss of duplexure transmission is inevitable, the switching of motor is from motion tracking between can't Following Car, and device itself can't carry out classification to be regulated.Install self frequent operation and can produce overvoltage, also be unfavorable for safe operation.
Dispersion compensation claims indivedual compensation again, and capacitor is installed near each workshop or the power consumption equipment dispersedly, can compensate the reactive power of all motor before the installation position.But this compensation way need dispose automatic regulating equipment, the switching with motor ruuning situation automaticallyes switch, and total equipment investment is bigger.
The utility model content
The utility model is for solving the technical problem that exists in the background technology, and power factor height, starting characteristic is good, overvoltage level is low, non-maintaining high power rate motor are provided.
Technical solution of the present utility model is: the utility model is a kind of high power rate motor, comprises the inductance coil of motor itself, and its special character is: described inductance coil is connected to electric capacity.
Above-mentioned electric capacity is in parallel with inductance coil.
Above-mentioned electric capacity is connected with inductance coil.
Above-mentioned motor is single-phase DC motor or three phase alternating current motor.
The current limiting reactor of connecting on the above-mentioned electric capacity.
Be in series with fuse on the loop of above-mentioned electric capacity and current limiting reactor.
Be parallel with impedance unit on the above-mentioned electric capacity.
When above-mentioned motor is three phase alternating current motor, all be connected to electric capacity on every phase inductance coil.
The utlity model has following advantage:
1, energy-conservation.The utility model self just is provided with building-out capacitor, adopts dispersion compensation principle on the spot, makes the power factor of motor itself can reach 0.9 to 0.98, and energy-saving effect is obvious.
2, be convenient to electric motor starting, the utility model is in motor starting process, and the capacitance current that electric capacity produces just can constitute the part of electric motor starting electric current, is convenient to the starting of motor.
3, help reducing switching overvoltage.Existing motor can produce the switching overvoltage of the higher-order of oscillation under the situation of starting, disconnection and sudden power, and electric capacity of the present utility model can play the effect that suppresses and reduce switching overvoltage.
4, help the probability that the reduction system produces resonance.After the utility model is provided with electric capacity, make the motor capacitance to earth reduce greatly, avoid resonance point.
5, capacitance compensation has been the part of motor, with the motor switching, so do not need to establish in addition a cover automatic regulating equipment.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model embodiment one;
Fig. 2 is the circuit theory diagrams of the utility model embodiment two;
Fig. 3 is the circuit theory diagrams of the utility model preferred embodiment.
Embodiment
Referring to Fig. 1, the utility model comprises motor inductance coil L, and inductance coil L is connected to capacitor C, and capacitor C is in parallel with inductance coil L, and this capacitor C specifically can be formed in parallel by one or more electric capacity respectively.
Referring to Fig. 2, capacitor C of the present utility model also can be connected with inductance coil L, and this capacitor C specifically can be formed by one or more capacitances in series respectively.
Referring to Fig. 3, a kind of middle motor in the utility model preferred embodiment is a three phase alternating current motor.When motor is three phase alternating current motor, all be connected to capacitor C on every phase inductance coil.The current limiting reactor Z1 that can connect respectively on the capacitor C to reduce the shove multiple and the frequency of shoving of capacitor C, also can be parallel with impedance unit Z2 on capacitor C, C provides discharge path for capacitor, capacitor for voltage protection C.Series connection fuse FU plays the short-circuit protection in this loop and the effect of unusual overtemperature protection on the loop of capacitor C, current limiting reactor Z1.
Other all devices can be considered attachment device, can be integrated into the set-top box form separately, are fixed on the shell of motor, also can be contained in the casing, combine together with motor.
Claims (8)
1, a kind of high power rate motor comprises the inductance coil of motor, and it is characterized in that: described inductance coil is connected to electric capacity.
2, high power rate motor according to claim 1, it is characterized in that: described electric capacity is in parallel with inductance coil.
3, high power rate motor according to claim 1, it is characterized in that: described electric capacity is connected with inductance coil.
4, according to claim 1 or 2 or 3 described high power rate motors, it is characterized in that: described motor is single-phase DC motor or three phase alternating current motor.
5, high power rate motor according to claim 4 is characterized in that: the current limiting reactor of connecting on the described electric capacity.
6, high power rate motor according to claim 5 is characterized in that: be in series with fuse on the loop of described electric capacity and current limiting reactor.
7, high power rate motor according to claim 4 is characterized in that: be parallel with impedance unit on the described electric capacity.
8, high power rate motor according to claim 4 is characterized in that: when described motor is three phase alternating current motor, all be connected to electric capacity on every phase inductance coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200330064U CN201126997Y (en) | 2007-11-30 | 2007-11-30 | High power rate motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200330064U CN201126997Y (en) | 2007-11-30 | 2007-11-30 | High power rate motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126997Y true CN201126997Y (en) | 2008-10-01 |
Family
ID=40000461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200330064U Expired - Fee Related CN201126997Y (en) | 2007-11-30 | 2007-11-30 | High power rate motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126997Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584398A (en) * | 2012-09-03 | 2015-04-29 | 罗伯特·博世有限公司 | Surge arrester for an electric machine |
-
2007
- 2007-11-30 CN CNU2007200330064U patent/CN201126997Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584398A (en) * | 2012-09-03 | 2015-04-29 | 罗伯特·博世有限公司 | Surge arrester for an electric machine |
| CN104584398B (en) * | 2012-09-03 | 2017-10-17 | 罗伯特·博世有限公司 | Overvoltage protection for motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20131130 |