CN2073193U - Lacour speed governor of multiple motors shunt - Google Patents
Lacour speed governor of multiple motors shunt Download PDFInfo
- Publication number
- CN2073193U CN2073193U CN 90209384 CN90209384U CN2073193U CN 2073193 U CN2073193 U CN 2073193U CN 90209384 CN90209384 CN 90209384 CN 90209384 U CN90209384 U CN 90209384U CN 2073193 U CN2073193 U CN 2073193U
- Authority
- CN
- China
- Prior art keywords
- speed
- contactor
- motor
- starting
- motors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a serial speed regulating device of paralleled multiple-motor, belonging to the technical field of motor dragging. The utility model achieves the purpose that multiple winding type or asynchronous motors share a control device by adding a state transition link and a feeding comparison link. The utility model has the advantages that the utility model utilizes one series speed regulating device to control the speed regulating operation of multiple motors, and the number of the used motors can be freely selected; or one partial of the motors conduct isochronous speed regulating, and the other partial of the motors run at full speed or stop.
Description
The utility model belongs to motor drive technology field.
At present, all be wire wound asynchronous motor of a cover speed-regulating control device control, if there are several machine operation just to need a few cover speed-regulating control devices, like this, not only investment is big, and floor space is big.
The purpose of this utility model is to have solved the work operation of adopting a cover speed regulating device control multiple electric motors.
The utility model is to realize like this.
By many rotor winding formula asynchronous machines, these motor stator winding and power supply join, rotor winding and state exchange link (1) are joined, state exchange link (1) is by speed governing, at full speed, start trigger and shared frequency sensitive trheostat pB constitute, wherein the rotor winding of every motor is connected to the starting bus by starting contactor separately, the starting bus other end connects frequency sensitive trheostat pB, contactor is used to realize short circuit at full speed, the rotor winding is connected with rectifier by speed governing contactor separately, rectification separately is identical with the unit serial regulator device with the afterflow link, each rotor is the shared inverter NL of access in parallel behind rectifier Z and afterflow reactor L, take back feedback transformer B, rotating speed of motor feedback signal u separately by automatic switch DZ after the inverter NL inversion
FsWith current feedback signal u
FiIntroduce common control system by feedback comparing element (2), feedback comparing element (2) is made of speed governing contactor auxiliary contact and diode serial connection.
Below in conjunction with Fig. 1 the operation principle of this device is described in detail:
After the energized, contactor C
31Closure, by frequency sensitive trheostat pB starting, starting process finishes, contactor C
21Closure, contactor C
31Disconnect, with rotor three-phase winding short circuit, motor carries out the transition to the full-speed operation state, reach at full speed after, if need speed governing, fly-back transformer B energized, switch DZ closure, contactor C
11Closure, contactor C
21Disconnect, motor carries out the transition to the speed governing operation state; Each electric motor starting running is identical with said process later on.Motor of each starting such as needs to finish at a last motor starting process during next electric motor starting.Feedback comparing element (2) is that each motor feedback signals is input to adjuster synchronously after relatively, this input mode, make its select with control system parameter and the motor platform number adjusting and put into operation what are irrelevant, only relevant with every the parameter of electric machine.
The utility model advantage is: uses the shared cascade speed regulator of a cover, can control the multiple electric motors speed governing operation, the platform number what drop into, can freely select, also can part motor synchronous step speed, and part motor full speed running or stop.
Fig. 1 is a multiple electric motors cascade speed regulator theory diagram in parallel.
Wherein: M
1, M
2, M
3Be wire-wound asynchronous motor, C
11, C
12, C
13Be the speed governing contactor, C
21, C
22, C
23Be the full speed contactor, C
31, C
32, C
33Be starting contactor, Z
1, Z
2, Z
3Be bridge rectifier, L
1, L
2, L
3Be the afterflow reactor, LH
1, LH
2, LH
3Be current measuring element, pB is a frequency sensitive trheostat, D
1～D
6Be diode, NL is an inverter, and DZ is an automatic switch, and B is a fly-back transformer, u
Fs1～3Be feedback speed signal, u
Fi1～3Be current feedback signal, (1) is the state exchange link, and (2) are the feedback comparing elements.
Claims (1)
1, a kind of multiple electric motors cascade speed regulator in parallel, by wire-wound asynchronous motor, bridge rectifier, reactor, current measuring element, adjuster, follower, trigger, distributor, fly-back transformer, automatic switch is formed, and it is characterized in that:
Rotor winding and state exchange link (1) are joined, the state exchange link is by speed governing, at full speed, starting contactor and shared frequency sensitive trheostat pB constitute, wherein the rotor winding of every motor is connected to the starting bus by starting contactor separately, the starting bus other end connects frequency sensitive trheostat pB, contactor is used to realize short circuit at full speed, the rotor winding is connected with rectifier by speed governing contactor separately, each rotor is through rectifier and the shared inverter NL of afterflow reactor access in parallel, take back feedback transformer B after the inverter NL inversion, each rotating speed of motor feedback signal u
FsWith current feedback signal u
FiIntroduce common control system by feedback comparing element (2), feedback comparing element (2) is made of speed governing contactor auxiliary contact and diode serial connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209384 CN2073193U (en) | 1990-06-25 | 1990-06-25 | Lacour speed governor of multiple motors shunt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209384 CN2073193U (en) | 1990-06-25 | 1990-06-25 | Lacour speed governor of multiple motors shunt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2073193U true CN2073193U (en) | 1991-03-13 |
Family
ID=4889465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90209384 Withdrawn CN2073193U (en) | 1990-06-25 | 1990-06-25 | Lacour speed governor of multiple motors shunt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2073193U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710184A (en) * | 2012-06-13 | 2012-10-03 | 鞍钢股份有限公司 | Device and method for controlling four motors with few cables and in double remote control mode |
| CN102820849A (en) * | 2011-06-10 | 2012-12-12 | 中国石油天然气股份有限公司 | Variable frequency speed regulating method for multiple water injection pumps in oilfield water injection station |
| CN113054808A (en) * | 2020-06-16 | 2021-06-29 | 美的威灵电机技术（上海）有限公司 | Motor controller of electrical equipment, motor device of electrical equipment and electrical equipment |
-
1990
- 1990-06-25 CN CN 90209384 patent/CN2073193U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820849A (en) * | 2011-06-10 | 2012-12-12 | 中国石油天然气股份有限公司 | Variable frequency speed regulating method for multiple water injection pumps in oilfield water injection station |
| CN102710184A (en) * | 2012-06-13 | 2012-10-03 | 鞍钢股份有限公司 | Device and method for controlling four motors with few cables and in double remote control mode |
| CN102710184B (en) * | 2012-06-13 | 2014-07-30 | 鞍钢股份有限公司 | Device and method for controlling four motors with few cables and in double remote control mode |
| CN113054808A (en) * | 2020-06-16 | 2021-06-29 | 美的威灵电机技术（上海）有限公司 | Motor controller of electrical equipment, motor device of electrical equipment and electrical equipment |
| CN113054808B (en) * | 2020-06-16 | 2022-03-25 | 美的威灵电机技术（上海）有限公司 | Motor controller of electrical equipment, motor device of electrical equipment and electrical equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |