CN201984146U - Load regulating and stabilizing device for motor testing system - Google Patents
Load regulating and stabilizing device for motor testing system Download PDFInfo
- Publication number
- CN201984146U CN201984146U CN2010206660676U CN201020666067U CN201984146U CN 201984146 U CN201984146 U CN 201984146U CN 2010206660676 U CN2010206660676 U CN 2010206660676U CN 201020666067 U CN201020666067 U CN 201020666067U CN 201984146 U CN201984146 U CN 201984146U
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- motor
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- rectifier
- feedback
- testing system
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Abstract
The utility model discloses a load regulating and stabilizing device for a motor testing system, which comprises a motor to be tested and a load motor; input current is supplied for the motor to be tested with a converter through a direct current bus, wherein the motor to be tested and the load motor are permanent magnetic synchronous motors which are coaxially connected; the feedback current of the load motor is boosted by a booster and is connected with a rectifier; and the output end of the rectifier is connected with the direct current bus. In the load regulating and stabilizing device for the motor testing system, because the double permanent magnetic synchronous motors are coaxially connected to form a feedback testing system, so that the electricity feedback of the double permanent magnetic synchronous motor feedback testing system as well as the electrode-less smooth regulation and stabilization of a load are realized, and the device has simple equipment and is convenient to operate.
Description
Technical field
The utility model relates to a kind of electric energy feedback assembly that is used for the motor test system, relates in particular to a kind of load regulation and stabilising arrangement that is used for the motor test system.
Background technology
In the motor test system, in order to reach purpose of energy saving, the mechanical energy that tested motor can be exported is carried out energy back by the generator of tunable load usually.When tested motor is AC induction motor, tend to run into the difficult problem of cost aspect.If do load with Dyn., the cost of Dyn. itself and the cost of feedback are all very high; If do load with alternator, inconsistent because of ac frequency and mains frequency that alternator sends, to use unit or four-quadrant frequency converter feedback usually, cost is also very high.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of load regulation and stabilising arrangement that is used for the motor test system, and is simple in structure, and it is convenient to regulate and control.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of load regulation and stabilising arrangement that is used for the motor test system, comprise tested motor and load motor, described tested motor provides input current by frequency converter by dc bus, wherein, described tested motor is the coaxial permasyn morot that links to each other with load motor, the feedback current of described load motor links to each other with rectifier after boosting by stepup transformer, and the output of described rectifier links to each other with dc bus.
Above-mentioned load regulation that is used for the motor test system and stabilising arrangement, wherein, described rectifier is a silicon controlled rectifier.
The utility model contrast prior art has following beneficial effect: load regulation that is used for the motor test system and stabilising arrangement that the utility model provides, be connected to form mutual feedback pilot system by two permasyn morots are coaxial, realized that two permasyn morots present the electrodeless smooth adjustment of the feedback of pilot system electric energy and load and stable mutually, appliance arrangement is simple, and is easy to operate.
Description of drawings
Fig. 1 is an electrical principle block diagram of the present utility model;
Fig. 2 is the electrical principle block diagram of load feedback rectifier of the present utility model.
Among the figure:
1 frequency converter, 2 tested motor 3 load motors
4 stepup transformers, 5 rectifiers
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is an electrical principle frame of the present utility model.
See also Fig. 1, load regulation that is used for the motor test system that the utility model provides and stabilising arrangement comprise tested motor 2 and load motor 3, described tested motor 2 provides input current by frequency converter 1 by dc bus, wherein, described tested motor 2 is the coaxial permasyn morot that links to each other with load motor 3, the feedback current of described load motor 3 links to each other with rectifier 5 after boosting by stepup transformer 4, and the output of described rectifier 5 links to each other with dc bus.
Load regulation that the utility model provides and stabilising arrangement, tested motor 2 works in motoring condition, load motor 3 is dragged by tested motor and works in generating state, the electric energy that sends boosts through stepup transformer 4, and guarantees voltage and dc bus coupling, makes the adjusting of rectifier have good controllability, to reach the required stable and continuously adjustable effect of test, insert rectifier 5 after the boost in voltage, realize feeding back to the dc bus of frequency converter, form the energy closed-loop system by rectifier 5.
The utility model device in use, electric energy is from frequency converter 1 input, but portion is transported to dc bus through the rectification link of pressure regulation within it, modulation link through adjustable frequency exports tested motor 2 to again, electric energy is converted into mechanical energy, deliver to the electric energy that load motor 3 is converted into form of communication through mechanical connection, through stepup transformer 4 booster tensions, by rectifier 5 rectifications is direct current, feed back to dc bus, the energy that total system absorbs from electrical network seldom is mainly frequency converter 1, tested motor 2, load motor 3, stepup transformer 4, the loss of rectifier 5 grades, energy-saving effect is obvious, is specially adapted to the heavy-duty motor pilot system.
Fig. 2 is the electrical principle block diagram of load feedback rectifier of the present utility model.
With reference to Fig. 2, tested motor 2 and load motor 3 are permasyn morot, two motor coaxles link together, form feedback pilot system mutually, tested motor 2 works in motoring condition, load motor 3 works in generating state, and tested motor 2 works in the speed closed loop state, can guarantee the operating mode Pass Test demand of tested motor 2.Load motor 3 works in torque closed loop state, mainly change the level of torque of load motor 3 by the electric current of control load motor 3, simulate the load condition and the variation of tested motor 2, and realize the load size of the tested motor 2 of electrodeless smooth adjustment, whole test system can realize the free adjustment of speed and torque, finishes the load test of permasyn morot.
The adjusting of the feedback quantity of the utility model device (being test load) realizes that by regulating feedback current feedback current can be realized by regulating stepup transformer 4 or rectifier 5.In general three kinds of combinations can be arranged.Transformer+(the belt current ring) adjustable rectifier; Pressure regulator+common rectifier; Pressure regulator+(the belt current ring) adjustable rectifier.
In sum, the utility model device adopts silicon controlled rectifier that the electric energy that load motor produces is fed back to the dc bus end, avoided a frequency difficult problem, simultaneously with respect to the control system that adopts insulated gate bipolar transistor (IGBT) commutation inversion, this device has cheap equipment cost, floor area is little, and it is convenient to regulate and control, more competitive in engineering is used.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (2)
1. a load regulation and stabilising arrangement that is used for the motor test system, comprise tested motor (2) and load motor (3), described tested motor (2) provides input current by frequency converter (1) by dc bus, it is characterized in that, described tested motor (2) is the coaxial permasyn morot that links to each other with load motor (3), the feedback current of described load motor (3) links to each other with rectifier (5) after boosting by stepup transformer (4), and the output of described rectifier (5) links to each other with dc bus.
2. load regulation and the stabilising arrangement that is used for the motor test system as claimed in claim 1 is characterized in that described rectifier (5) is a silicon controlled rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206660676U CN201984146U (en) | 2010-12-17 | 2010-12-17 | Load regulating and stabilizing device for motor testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206660676U CN201984146U (en) | 2010-12-17 | 2010-12-17 | Load regulating and stabilizing device for motor testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201984146U true CN201984146U (en) | 2011-09-21 |
Family
ID=44611604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206660676U Expired - Lifetime CN201984146U (en) | 2010-12-17 | 2010-12-17 | Load regulating and stabilizing device for motor testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201984146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163460A (en) * | 2013-02-05 | 2013-06-19 | 安徽中家智锐科技有限公司 | Motor twin trawling platform used for motor test |
| CN107817443A (en) * | 2017-10-17 | 2018-03-20 | 株洲长河电力机车科技有限公司 | A kind of range extender of electric vehicle generator test system |
-
2010
- 2010-12-17 CN CN2010206660676U patent/CN201984146U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163460A (en) * | 2013-02-05 | 2013-06-19 | 安徽中家智锐科技有限公司 | Motor twin trawling platform used for motor test |
| CN107817443A (en) * | 2017-10-17 | 2018-03-20 | 株洲长河电力机车科技有限公司 | A kind of range extender of electric vehicle generator test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |