CN205772684U - A kind of power driving circuit of elevator traction machine - Google Patents
A kind of power driving circuit of elevator traction machine Download PDFInfo
- Publication number
- CN205772684U CN205772684U CN201620512179.3U CN201620512179U CN205772684U CN 205772684 U CN205772684 U CN 205772684U CN 201620512179 U CN201620512179 U CN 201620512179U CN 205772684 U CN205772684 U CN 205772684U
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- CN
- China
- Prior art keywords
- elevator
- output contactor
- regenerated energy
- traction machine
- converter
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- 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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Abstract
This utility model provides the power driving circuit of a kind of elevator traction machine, input catalyst, regenerated energy converter, converter output contactor, elevator operation output contactor and three phase electric machine is run including three-phase alternating current variable-frequency power sources, elevator, the input of regenerated energy converter runs input catalyst by elevator and connects three-phase alternating current variable-frequency power sources, the outfan of regenerated energy converter runs output contactor by elevator and connects three phase electric machine, and elevator runs and accesses converter output contactor between output contactor and three phase electric machine.When traction machine of the present utility model needs to disconnect output loop with heavy current low-speed running, the outfan of regenerated energy converter switches to converter output contactor, it is to avoid because rotor is caused damage by arc discharge；Meanwhile, discharge regenerated energy by braking resistor during elevator brake, it is to avoid because busbar voltage increases the impact on traction machine control system, provide a safety without the running environment of hidden danger to elevator.
Description
Technical field
This utility model belongs to elevator technology field, is specifically related to the power driving circuit of a kind of elevator traction machine.
Background technology
The use of elevator is more and more extensive, and traction elevator, as developing more ripe lift product, occupies bigger proportion in elevator market.In existing elevator technology, being likely to result in serious arc discharge when disconnecting converter output circuit during traction machine is with heavy current low-speed running, arc discharge can cause the damage of rotor body to a certain extent；On the other hand, converter braking traction machine makes energy be returned converter by traction machine, converter absorbable maximum regeneration energy is equal to converter power consumption (i.e. loss), when regenerated energy is more than the power consumption of converter, regenerated energy can increase frequency changer direct current bus voltage, the control system of traction machine can be destroyed to a certain extent, hide some dangers for the safe operation of traction machine.
Utility model content
For solving above-mentioned technical problem, this utility model provides the power driving circuit of a kind of elevator traction machine, it is ensured that elevator is without the safe operation of hidden danger.
For reaching above-mentioned purpose, the technical solution of the utility model is as follows: the power driving circuit of a kind of elevator traction machine, it is characterized in that: include three-phase alternating current variable-frequency power sources, elevator runs input catalyst MC1, regenerated energy converter P, converter output contactor KC, elevator runs output contactor MC2 and three phase electric machine M, the input of regenerated energy converter P runs input catalyst MC1 by elevator and connects three-phase alternating current variable-frequency power sources, the outfan of regenerated energy converter P runs output contactor MC2 by elevator and connects three phase electric machine M, elevator runs and accesses described converter output contactor KC between output contactor MC2 and three phase electric machine M, the normally opened contact Guan Bi of converter output contactor KC when the normally-closed contact that elevator runs output contactor MC2 disconnects.
In one preferred embodiment of this utility model, farther include also to be in series with braking resistor BR on described regenerated energy converter.
In one preferred embodiment of this utility model; farther including described three-phase alternating current variable-frequency power sources and elevator runs also to access between input catalyst MC1 and has phase sequence relay, described elevator runs also to access between input catalyst MC1 and regenerated energy converter P power-supply filter.
In one preferred embodiment of this utility model, farther include also to access between described phase sequence relay and three-phase alternating current variable-frequency power sources have three phase mains chopper.
In one preferred embodiment of this utility model, farther including described three phase electric machine M is synchronous motor.
In one preferred embodiment of this utility model, farther including described three phase electric machine M is asynchronous machine.
In one preferred embodiment of this utility model, farther include described regenerated energy converter P and be connected with three phase electric machine also by a rotary encoder.
The beneficial effects of the utility model are: the power driving circuit of a kind of elevator traction machine of the present utility model, when traction machine needs to disconnect output loop with heavy current low-speed running, the outfan of regenerated energy converter switches to converter output contactor, it is to avoid because rotor is caused damage by arc discharge；Meanwhile, discharge regenerated energy by braking resistor during elevator brake, it is to avoid because busbar voltage increases the impact on traction machine control system, provide a safety without the running environment of hidden danger to elevator.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment technology, in describing embodiment technology below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit structure diagram of this utility model preferred embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Embodiment
As shown in Figure 1, the present embodiment discloses the power driving circuit of a kind of elevator traction machine, including three-phase alternating current variable-frequency power sources A, three phase mains circuit breaker Q, phase sequence relay J, elevator runs input catalyst MC1, power-supply filter F, regenerated energy converter P, elevator runs output contactor MC2, converter output contactor KC and three phase electric machine M, three-phase alternating current variable-frequency power sources, three phase mains circuit breaker Q, phase sequence relay J, elevator runs input catalyst MC1, power-supply filter F, regenerated energy converter P, elevator runs output contactor MC2, three phase electric machine M is sequentially connected with, stable power drives is provided to three phase electric machine M.Converter output contactor KC accesses elevator and runs between output contactor MC2 and three phase electric machine M, the normally opened contact Guan Bi of converter output contactor KC when the normally-closed contact that elevator runs output contactor MC2 disconnects.When needing the output circuit disconnecting regenerated energy converter P during traction machine is with heavy current low-speed running; export and switched to converter output contactor KC output by elevator operation output contactor MC2; thus solving arcing problem, protection rotor body is from damage.
As further improvement of the utility model, braking resistor BR also it is in series with on regenerated energy converter P, braking resistor BR can assist absorption motor braking time release regenerated energy, solve the frequency changer direct current bus problem that voltage increases when motor braking, avoid because busbar voltage increases the impact on traction machine control system, provide a safety without the running environment of hidden danger to elevator.
Three phase electric machine M of the present utility model can be synchronous motor, it is also possible to for asynchronous machine, it is preferred to use permanent-magnet synchronous toothless traction machine.
As further improvement of the utility model, described regenerated energy converter P is connected with three phase electric machine M also by a rotary encoder T, whether rotary encoder detection three phase electric machine M rotates, and detection information is fed back to regenerated energy converter P, when detecting that three phase electric machine M rotates, regenerated energy converter P output switching to elevator runs output contactor MC2 output；When detecting that three phase electric machine M does not rotates, regenerated energy converter P output switching exports to converter output contactor KC.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (7)
1. the power driving circuit of an elevator traction machine, it is characterised in that: include three-phase alternating current variable-frequency power sources,
Elevator run input catalyst (MC1), regenerated energy converter (P), converter output contactor (KC),
Elevator runs output contactor (MC2) and three phase electric machine (M), the input of regenerated energy converter (P)
Hold and run input catalyst (MC1) connection three-phase alternating current variable-frequency power sources, regenerated energy converter by elevator
(P) outfan runs output contactor (MC2) by elevator and connects three phase electric machine (M), and elevator is transported
Described converter output contactor (KC) is accessed between row output contactor (MC2) and three phase electric machine (M),
The converter output contactor (KC) when the normally-closed contact that elevator runs output contactor (MC2) disconnects
Normally opened contact closes.
The power driving circuit of a kind of elevator traction machine the most according to claim 1, it is characterised in that:
Braking resistor (BR) also it is in series with on described regenerated energy converter.
The power driving circuit of a kind of elevator traction machine the most according to claim 1 and 2, its feature exists
In: described three-phase alternating current variable-frequency power sources and elevator run also to access between input catalyst (MC1) phase sequence
Protector, described elevator runs and also connects between input catalyst (MC1) and regenerated energy converter (P)
Enter to have power-supply filter.
The power driving circuit of a kind of elevator traction machine the most according to claim 3, it is characterised in that:
Also access between described phase sequence relay and three-phase alternating current variable-frequency power sources and have three phase mains chopper.
The power driving circuit of a kind of elevator traction machine the most according to claim 4, it is characterised in that:
Described three phase electric machine (M) is synchronous motor.
The power driving circuit of a kind of elevator traction machine the most according to claim 4, it is characterised in that:
Described three phase electric machine (M) is asynchronous machine.
7., according to the power driving circuit of a kind of elevator traction machine described in claim 5 or 6, its feature exists
In: described regenerated energy converter (P) is connected with three phase electric machine also by a rotary encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620512179.3U CN205772684U (en) | 2016-05-31 | 2016-05-31 | A kind of power driving circuit of elevator traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620512179.3U CN205772684U (en) | 2016-05-31 | 2016-05-31 | A kind of power driving circuit of elevator traction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205772684U true CN205772684U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620512179.3U Expired - Fee Related CN205772684U (en) | 2016-05-31 | 2016-05-31 | A kind of power driving circuit of elevator traction machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN205772684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697550A (en) * | 2020-04-29 | 2020-09-22 | 宁波宏大电梯有限公司 | Main power supply loop for escalator control system |
-
2016
- 2016-05-31 CN CN201620512179.3U patent/CN205772684U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697550A (en) * | 2020-04-29 | 2020-09-22 | 宁波宏大电梯有限公司 | Main power supply loop for escalator control system |
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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: 20161207 Termination date: 20210531 |