CN203445815U - Asynchronous motor compound loading device - Google Patents
Asynchronous motor compound loading device Download PDFInfo
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- CN203445815U CN203445815U CN201320498996.4U CN201320498996U CN203445815U CN 203445815 U CN203445815 U CN 203445815U CN 201320498996 U CN201320498996 U CN 201320498996U CN 203445815 U CN203445815 U CN 203445815U
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- switch
- asynchronous motor
- inverter
- asynchronous machine
- loading device
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Abstract
The utility model discloses an asynchronous motor compound loading device, relating to an excitation loading device. The asynchronous motor compound loading device comprises a main inverter, a main controller, a secondary inverter, a first asynchronous motor and a second asynchronous motor. The main controller is respectively connected with the main inverter and the secondary inverter. The main inverter is respectively connected with the first asynchronous motor, an AC power supply, one end of a resistor, and one end of a second switch. The secondary inverter is respectively connected with one end of a first switch, the other end of the second switch, an end of a third switch and the second asynchronous motor. The second asynchronous motor is connected with the first asynchronous motor. The other end of the third switch is connected with the other end of the resistor R. The other end of the first switch is connected with the main controller. According to the asynchronous motor compound loading device, small voltage is used to carry out loading at the beginning stage in the loading of the asynchronous motor, and full voltage is used to carry out loading after a load speed reaches a rated speed.
Description
Technical field
The utility model relates to a kind of excitation charger, be specifically related to a kind of asynchronous machine Combined Loading device.
Background technology
Asynchronous motor claims again induction motor, is to be interacted and produced electromagnetic torque by air-gap rotating magnetic field and rotor winding induced current, thereby realizes a kind of alternating current machine that energy converting between mechanical is mechanical energy.Current asynchronous machine on the market can not be stablized progressively and load when realizing excitation loading, to its test, uses and has brought very large inconvenience.
Summary of the invention
For the deficiency existing in prior art, the utility model object is to be to provide a kind of asynchronous machine Combined Loading device, can make the incipient stage that is carried in of asynchronous machine use less voltage to load, at loading velocity, reach specified rear employing full voltage and load.
To achieve these goals, the utility model is to realize by the following technical solutions: asynchronous machine Combined Loading device, comprise main inverter, master controller, from inverter, the first asynchronous machine and the second asynchronous machine, master controller respectively with main inverter with from inverter, be connected, main inverter respectively with the first asynchronous machine, AC power, resistance one end, second switch one end is connected, from inverter respectively with first switch one end, the second switch other end, the 3rd switch one end, the second asynchronous machine is connected, the second asynchronous machine is connected with the first asynchronous machine, the 3rd switch other end is connected with the resistance other end, the first switch other end is connected with master controller.
The utility model can make the incipient stage that is carried in of asynchronous machine use less voltage to load, and reaches specified rear employing full voltage load at loading velocity.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the utility model in detail;
Fig. 1 is structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
With reference to Fig. 1, this embodiment is by the following technical solutions: asynchronous machine Combined Loading device, comprise main inverter 1, master controller 2, from inverter 3, the first asynchronous machine M1 and the second asynchronous machine M2, master controller 2 respectively with main inverter 1 with from inverter 3, be connected, main inverter 1 respectively with the first asynchronous machine M1, AC power, resistance R one end, second switch K2 one end is connected, from inverter 3 respectively with first K switch 1 one end, the second switch K2 other end, the 3rd K switch 3 one end, the second asynchronous machine M2 is connected, the second asynchronous machine M2 is connected with the first asynchronous machine M1, the 3rd K switch 3 other ends are connected with the resistance R other end, first K switch 1 other end is connected with master controller 2.
The course of work of this embodiment is as follows: under the control of master control borad, main inverter 1 full speed running drives the first asynchronous machine M1, the first asynchronous machine M1 drives the second asynchronous machine M2 running, after velocity-stabilization, busbar voltage from inverter 3 is connected on to low-voltage direct side first K switch 1 of closing, from inverter, bring into operation, because voltage is lower, from inverter, be carried in very little load, when speed reaches with the first asynchronous machine M1 when synchronized, heap(ed) capacity is zero, now the 3rd K switch 3 is closed DC bus-bar voltage is full of, after being full of, second switch K2 is closed, now, frequency trim from inverter 3 can be declined, load and normally carry out.All control is all carried out in master controller 2.
This embodiment can make the incipient stage that is carried in of asynchronous machine use less voltage to load, and reaches specified rear employing full voltage load at loading velocity.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. asynchronous machine Combined Loading device, it is characterized in that, comprise main inverter (1), master controller (2), from inverter (3), the first asynchronous machine (M1) and the second asynchronous machine (M2), master controller (2) respectively with main inverter (1) with from inverter (3), be connected, main inverter (1) respectively with the first asynchronous machine (M1), AC power, resistance (R) one end, second switch (K2) one end is connected, from inverter (3) respectively with the first switch (K1) one end, second switch (K2) other end, the 3rd switch (K3) one end, the second asynchronous machine (M2) is connected, the second asynchronous machine (M2) is connected with the first asynchronous machine (M1), the 3rd switch (K3) other end is connected with resistance (R) other end, the first switch (K1) other end is connected with master controller (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498996.4U CN203445815U (en) | 2013-08-15 | 2013-08-15 | Asynchronous motor compound loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498996.4U CN203445815U (en) | 2013-08-15 | 2013-08-15 | Asynchronous motor compound loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445815U true CN203445815U (en) | 2014-02-19 |
Family
ID=50096830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498996.4U Expired - Fee Related CN203445815U (en) | 2013-08-15 | 2013-08-15 | Asynchronous motor compound loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203445815U (en) |
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2013
- 2013-08-15 CN CN201320498996.4U patent/CN203445815U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20200815 |