CN202513584U - Combined energy feedback type power-saving device of multiple control lift - Google Patents
Combined energy feedback type power-saving device of multiple control lift Download PDFInfo
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- CN202513584U CN202513584U CN2011204505276U CN201120450527U CN202513584U CN 202513584 U CN202513584 U CN 202513584U CN 2011204505276 U CN2011204505276 U CN 2011204505276U CN 201120450527 U CN201120450527 U CN 201120450527U CN 202513584 U CN202513584 U CN 202513584U
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- elevator
- energy
- energy feedback
- multiple control
- variable frequency
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Abstract
The utility model discloses a combined energy feedback type power-saving device of a multiple control lift. The combined energy feedback type power-saving device of the multiple control lift is adopted for making up defects of low power-saving efficiency and large quantity of higher harmonics of a feedback power grid in a single power-saving mode of the lift. The combined energy feedback type power-saving device of the multiple control lift is composed of lift frequency converters, a recovered energy feedback device and an over-voltage resistance damper, wherein the lift frequency converters are composed of DC power sources and frequency conversion inverters. The lift frequency converters connect with the recovered energy feedback device and the over-voltage resistance damper in parallel through a common DC bus. Power feedback of the recovered energy generated in the operation of the lift can be realized through the common DC bus and the recovered energy feedback device, thereby realizing an aim of saving power through recycling the power generated by the lift in a braking power generating state.
Description
Technical field
The present invention relates to a kind of many employing elevator group controlling patterns, common dc bus feedback electric energy, three kinds of electricity saving function energy composite energy feedback multiple control lift battery saving arrangements of Way of Regenerating Energy Feedback electric energy of comprising.
Technical background
Existing elevator economize on electricity is adopted:
The elevator group controlling pattern is to utilize many elevators of same position waiting the occupant with floor, and the service efficiency that improves elevator reaches the purpose of economize on electricity, motor self is not worked do not economize on electricity.
The dc bus feedback electric energy is to utilize the electric energy of the elevator generation that is in on-position to use the purpose that reaches economize on electricity through dc bus is additional altogether to another elevator that is in the state of dragging altogether.This power saving scheme feedback electric energy efficient is high, does not produce the influential high order harmonic component of electrical network, can not feedback electric energy when many elevators are in on-position simultaneously.
Way of Regenerating Energy Feedback is to utilize the electric energy of the elevator generation that is in on-position to become the purpose that reaches economize on electricity with power supply grid with the alternating current feedback grid of frequency homophase through the Way of Regenerating Energy Feedback device.The electric energy that this power saving scheme can produce the elevator that is in on-position at any time feeds back to electrical network, and shortcoming is to produce the influential high order harmonic component of electrical network.
Summary of the invention
The utility model is to the not high shortcoming many with the feedback grid high order harmonic component of the single energy-saving mode electric energy of elevator, and the energy composite energy feedback multiple control lift battery saving arrangement that adopts.Form by elevator variable frequency device, Way of Regenerating Energy Feedback device, overvoltage resistance energy consumer; Wherein: the elevator variable frequency device is made up of DC power supply and variable frequency inverter; Many elevator variable frequency devices are through being total to dc bus and Way of Regenerating Energy Feedback device, overvoltage resistance energy consumer and linking together; The regenerated energy that when elevator moves, produces is through being total to the mode of dc bus and two kinds of feedback electric energy of Way of Regenerating Energy Feedback device, and the electric energy that regeneration brake power generating state elevator produces reaches purpose of energy saving.
In order to reach the purpose of the compound economize on electricity of above-mentioned elevator; The technical scheme of the utility model is following: with DC side branch both positive and negative polarity, Way of Regenerating Energy Feedback device, overvoltage resistance energy consumer in many elevator variable frequency devices together dc bus and be linked together; Wherein: serial connection fuse and D.C. contactor contact on many elevator variable frequency device DC side branch lines; Be connected on the common dc bus; Connecting a Way of Regenerating Energy Feedback device and an overvoltage resistance energy consumer respectively on the dc bus altogether; The D.C. contactor contact is controlled by same Controlling Source simultaneously with each elevator variable frequency device AC side ac contactor contact; When the operation of many elevator group controllings three kinds of running statuses can appear like this: one, brake power generating state elevator with drag power consumption state elevator and when depositing, at this moment the electric energy that produces of brake power generating state elevator replenishes to give elsewhere through dc bus altogether and uses in dragging power consumption state elevator, has reduced the electric energy that electrical network is supplied with elevator.Two, have only brake power generating state elevator operation, the electric energy that produces of brake power generating state elevator at this moment becomes and feeds back to other electrical equipment of electrical network with electrical network with the alternating current of homophase frequently and use through being attached at Way of Regenerating Energy Feedback device on the common dc bus.Three, only drag power consumption state elevator, at this moment elevator is in the maximum energy consumption state and does not economize on electricity.When above-mentioned three kinds of elevator operation apparatus for controlling elevator adopt the team control mode; Brake power generating state elevator and the probability that drags power consumption state elevator and deposit operation are more than having only brake power generating state elevator operation probability; Significantly reduced the action time of Way of Regenerating Energy Feedback device; Also significantly reduced the influence of high order harmonic component, brought into play many multiple control lifts, Way of Regenerating Energy Feedback, be total to three kinds of elevator battery saving modes of dc bus elevator combined electricity-saving of advantage separately electrical network.Direct current bus bar was pressed when being elevated to upper limit setting voltage value altogether when the Way of Regenerating Energy Feedback device loses efficacy; Overvoltage resistance energy consumer is opened the power consumption conductive discharge; Protection elevator variable frequency device is not damaged, and Way of Regenerating Energy Feedback device setting value is less than overvoltage resistance energy consumer setting value 5%.
Description of drawings
Fig. 1 is the circuit principle structure sketch map of the utility model.
Among the figure:
Second elevator of first elevator elevator variable frequency of 1-device 2-elevator variable frequency device
Second elevator contactor of first elevator contactor of 11-Controlling Source 21-Controlling Source
Second elevator contacts of contactor of first elevator contacts of contactor of 12-22-
Second elevator variable frequency device of first elevator variable frequency device of 13-rectifier bridge 23-rectifier bridge
Second elevator fuse of first elevator fuse of 14-24-
Second elevator variable frequency inverter of first elevator variable frequency inverter of 15-25-
Second elevator motor of first elevator motor 26-of 16-
N-n platform elevator variable frequency device 3-Way of Regenerating Energy Feedback device
N1-n platform elevator contactor Controlling Source 4-overvoltage resistance energy consumer
N2-n platform elevator contacts of contactor 41-busbar voltage controller
The n3-n platform elevator variable frequency device rectifier bridge 42-resistance that consumes energy
N4-n platform elevator fuse 5-is dc bus altogether
N5-n platform elevator variable frequency inverter 6-reactor
N6-n platform elevator motor
Embodiment
As shown in Figure 1 the utility model technical scheme is further described.On the both positive and negative polarity of dc bus 5 altogether respectively and connect first elevator elevator variable frequency device 1 DC side branch, second elevator elevator variable frequency device 2 DC side branch ... The electrical equipment of n platform elevator elevator variable frequency device n DC side branch, Way of Regenerating Energy Feedback device 3 input V1,4 three kinds of difference in functionalitys of overvoltage resistance energy consumer; First elevator elevator variable frequency device 1 DC side branch, second elevator elevator variable frequency device 2 DC side branch ... First elevator fuse of serial connection 14 in the n platform elevator elevator variable frequency device n DC side branch, second elevator fuse 24 ... N platform elevator fuse n4 and direct current disconnecting link K1, K2 ... Kn, direct current disconnecting link K1, K2 ... Kn and first elevator contacts of contactor 12, second elevator contacts of contactor 22 ... N platform elevator contacts of contactor n2 be controlled by first elevator contactor Controlling Source 11, second elevator contactor Controlling Source 21 ... N platform elevator contactor Controlling Source n1.
When first elevator is in the brake power generating state; First elevator motor 16 is in generating state; The electric energy that the DC side that this moment, first elevator variable frequency device rectifier bridge 13 linked to each other with first elevator variable frequency inverter 15 produces is in DC side or the n platform elevator variable frequency device rectifier bridge n3 and the DC side electric energy that n platform elevator variable frequency inverter n5 links to each other that second elevator variable frequency device rectifier bridge 23 dragging the power consumption state links to each other with second elevator variable frequency inverter 25 through dc bus 5 feedbacks supply altogether, has reduced the mains supply amount.In like manner, when second elevator or n platform elevator were in the brake power generating state, second elevator motor 26 or n platform elevator motor n6 were in generating state, and the electric energy of generation is supplied with other elevators and used and reach purpose of energy saving.
An above elevator is in the brake power generating state in first elevator, second, n platform elevator; Nowhere when dragging power consumption state elevator; The electric energy that produces on the dc bus 5 altogether is through Way of Regenerating Energy Feedback device 3 input V1, becomes to feed back to electrical network with electrical network with the three-phase alternating current of homophase frequently and reach energy-conservation purpose.
For elimination feeds back to the three-phase alternating current high order harmonic component of electrical network, tandem reactor 6 between Way of Regenerating Energy Feedback device 3 outputs and the electrical network reduces the influence of high order harmonic component to electrical network.
When Way of Regenerating Energy Feedback device 3 lost efficacy; Altogether dc bus 5 power on press be elevated to first elevator elevator variable frequency device 1, second elevator elevator variable frequency device 2 ... During the highest safe voltage of n platform elevator elevator variable frequency device n; Busbar voltage controller 41 in the overvoltage resistance energy consumer 4 starts, and resistance 42 dc bus 5 connections together of will consuming energy consume the electric energy that is total on the dc bus 5; Dc bus 5 powers on drops to below the highest safe voltage altogether; Busbar voltage controller 41 in the overvoltage resistance energy consumer 4 is closed, and power consumption resistance 42 dc bus 5 together breaks off, and has protected frequency converter.
Claims (6)
1. energy composite energy feedback multiple control lift battery saving arrangement; It is characterized in that: form by elevator variable frequency device, Way of Regenerating Energy Feedback device, overvoltage resistance energy consumer; Wherein: the elevator variable frequency device is made up of DC power supply and variable frequency inverter, and many elevator variable frequency devices are through being total to dc bus and Way of Regenerating Energy Feedback device, overvoltage resistance energy consumer and linking together.
2. energy composite energy feedback multiple control lift battery saving arrangement according to claim 1 is characterized in that: serial connection fuse and D.C. contactor contact on many elevator variable frequency device DC side branch lines are connected on the common dc bus.
3. energy composite energy feedback multiple control lift battery saving arrangement according to claim 1 is characterized in that: connect a Way of Regenerating Energy Feedback device on the dc bus altogether.
4. energy composite energy feedback multiple control lift battery saving arrangement according to claim 1 is characterized in that: connect an overvoltage resistance energy consumer on the dc bus altogether.
5. energy composite energy feedback multiple control lift battery saving arrangement according to claim 1 is characterized in that: tandem reactor between Way of Regenerating Energy Feedback device output and the electrical network.
6. energy composite energy feedback multiple control lift battery saving arrangement according to claim 1 is characterized in that: Way of Regenerating Energy Feedback device setting value is less than overvoltage resistance energy consumer setting value 5%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2011204505276U CN202513584U (en) | 2011-10-30 | 2011-10-30 | Combined energy feedback type power-saving device of multiple control lift |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN2011204505276U CN202513584U (en) | 2011-10-30 | 2011-10-30 | Combined energy feedback type power-saving device of multiple control lift |
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CN202513584U true CN202513584U (en) | 2012-10-31 |
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CN2011204505276U Expired - Fee Related CN202513584U (en) | 2011-10-30 | 2011-10-30 | Combined energy feedback type power-saving device of multiple control lift |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102684226A (en) * | 2012-05-30 | 2012-09-19 | 大连美恒电气有限公司 | Energy-saving device and method capable of feeding back electric energy to power grid from parallel connection |
CN109516326A (en) * | 2017-09-18 | 2019-03-26 | 上海三菱电梯有限公司 | More elevator control systems |
WO2019184213A1 (en) * | 2018-03-30 | 2019-10-03 | 北京天诚同创电气有限公司 | Modular converter and control method therefor, and wind turbine |
-
2011
- 2011-10-30 CN CN2011204505276U patent/CN202513584U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102684226A (en) * | 2012-05-30 | 2012-09-19 | 大连美恒电气有限公司 | Energy-saving device and method capable of feeding back electric energy to power grid from parallel connection |
CN109516326A (en) * | 2017-09-18 | 2019-03-26 | 上海三菱电梯有限公司 | More elevator control systems |
CN109516326B (en) * | 2017-09-18 | 2021-05-25 | 上海三菱电梯有限公司 | Multi-elevator control system |
WO2019184213A1 (en) * | 2018-03-30 | 2019-10-03 | 北京天诚同创电气有限公司 | Modular converter and control method therefor, and wind turbine |
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Legal Events
Date | Code | Title | Description |
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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: 20121031 Termination date: 20131030 |