CN110048445A - Energy-saving device of elevator - Google Patents
Energy-saving device of elevator Download PDFInfo
- Publication number
- CN110048445A CN110048445A CN201810043104.9A CN201810043104A CN110048445A CN 110048445 A CN110048445 A CN 110048445A CN 201810043104 A CN201810043104 A CN 201810043104A CN 110048445 A CN110048445 A CN 110048445A
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- bus
- energy
- inverter
- electrical equipment
- general supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a kind of energy-saving device of elevator, two direct-flow input ends of each inverter connect DC bus respectively, and ac output end connects different motors respectively；The output power of inverter is positive when motoring condition, and the output power of inverter is negative when reproduced state；Electrical equipment general supply is DC/DC uni-directional converter and/or uni-directional converter DC/AC uni-directional converter；DC bus electric energy is provided to electrical equipment by electrical equipment general supply；When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is negative, and DC bus-bar voltage is higher, then direct current bus bar can be delivered to energy storage equipment；When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is positive, and DC bus-bar voltage is lower, then electric energy on energy storage equipment is delivered to DC bus.Energy-saving efficiency of the present invention is high, small to energy storage equipment device stress and at low cost.
Description
Technical field
The present invention relates to elevator control technology, in particular to a kind of energy-saving device of elevator.
Background technique
As energy conservation and environmental protection is rooted in the hearts of the people, there are many energy savers in elevators field, and improves energy-saving efficiency, reduces section
The requirement of energy device, becomes the target that each producer chases.
These energy savers generally comprise the energy storage equipment with electric power management device.In order to improve the energy storage equipment
Frequency of use has producer to propose the DC bus for connecting multiple elevator inverter to improve the energy-saving efficiency of elevator entirety
It is in parallel.
And after DC bus is in parallel, when inverter carries out regeneration operation simultaneously, be fed back to the power of DC bus compared with
Greatly, this just proposes the devices such as reactor, insulated gate bipolar transistor, freewheeling diode, super capacitor in energy storage equipment
Requirements at the higher level.Each producer may weigh the above-mentioned device specification of raising and bring increased costs and inverter parallel connection direct are female
Pros and cons after line between bring whole energy improved efficiency are chosen suitable intermediate point and are designed.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of energy-saving device of elevator, and energy-saving efficiency is high, reduce and fill to accumulation of energy
Device stress is set, and does not increase overall cost additionally.
In order to solve the above technical problems, energy-saving device of elevator provided by the invention comprising DC bus, energy storage equipment,
Power detection device, at least one inverter and at least one electrical equipment general supply；
Two direct-flow input ends of each inverter connect the positive and negative busbar of DC bus respectively, and ac output end connects not respectively
Same motor；
Inverter has motoring condition and reproduced state two states, and the output power of inverter is when motoring condition
Just, DC bus electric energy is provided to motor；The output power of inverter is negative when reproduced state, and motor feedback electric energy is defeated
It send to DC bus；
Electrical equipment general supply is DC/DC uni-directional converter and/or uni-directional converter DC/AC uni-directional converter；
Two direct-flow input ends of each electrical equipment general supply connect the positive and negative busbar of DC bus respectively, and output connects electricity consumption and sets
It is standby；The output power of electrical equipment general supply, which is greater than, is equal to 0, and DC bus electric energy is provided to electrical equipment；
The power detection device is for detecting the output for connecing each inverter and electrical equipment general supply on bus
The summation of power；
The energy storage equipment connects between positive and negative busbar；
The energy storage equipment includes electric power management device and super capacitor；
The electric power management device is used for the power flow deployed between DC bus and super capacitor；
When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is negative, and
And DC bus-bar voltage is higher than the first setting voltage X, then direct current bus bar can be delivered to by the electric power management device control
Super capacitor；
When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is positive, and
And DC bus-bar voltage lower than the second setting voltage Y, then electric energy on super capacitor is delivered to by the electric power management device control
DC bus；
First setting voltage X is greater than the second setting voltage Y.
Preferably, energy-saving device of elevator further includes rectifier bridge stack；
The rectifier bridge stack is provided to DC bus after electric main is converted to direct current；
The output voltage of the rectifier bridge stack is greater than the second setting voltage Y, and less than the first setting voltage X.
Preferably, energy-saving device of elevator further includes regeneration energy-consuming device；
The regeneration energy-consuming device includes the regeneration resistance and brake switch being connected between positive and negative busbar.
Preferably, the electric power management device include the first insulated gate bipolar transistor, the second insulated gate bipolar transistor,
First inductance, third diode and the 4th diode；
The emitter of first insulated gate bipolar transistor connects the collector of the second insulated gate bipolar transistor；
The emitter of the collector of first insulated gate bipolar transistor and the second insulated gate bipolar transistor connects positive and negative respectively
Bus；
First inductance one terminates the emitter of the first insulated gate bipolar transistor, and another termination super capacitor is just
Pole；
The cathode of the super capacitor connects negative busbar；
Third diode negative terminal connects positive bus-bar, is just terminating the anode of the super capacitor；
4th diode negative terminal connects the anode of the super capacitor, just terminates negative busbar.
Preferably, the capacity of the super capacitor is 250Wh.
Preferably, the output voltage of the rectifier bridge stack is 540V；
First sets voltage X as 630V；
Second sets voltage Y as 530V.
Energy-saving device of elevator of the invention, when inverter gross output in parallel on DC bus is negative, motor
Regenerative electric energy sent via DC bus to electrical equipment general supply by inverter, which electrically sets compared to being not configured
It when standby general supply, is first sent via DC bus by inverter to energy storage equipment, when use is sent to direct current by energy storage equipment again
The path of bus, conversion links are few, therefore energy-saving efficiency is high.Since electrical equipment general supply consumes always electricity when elevator is powered
Can, so the electric energy power requirement for needing to be fed back to energy storage equipment can be reduced suitably, reduce to energy storage equipment device stress, then
The resistance power consumption of raw energy-consuming device requires to reduce, and not extra band carrys out the increase of overall cost.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, the required attached drawing of the present invention is made below simple
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is one example structure schematic diagram of energy-saving device of elevator of the invention；
Fig. 2 is the energy storage equipment circuit diagram of one embodiment of energy-saving device of elevator of the invention.
Description of symbols:
1: rectifier bridge stack；2: DC bus；3: inverter；4: energy storage equipment；41: electric power management device；42: super electricity
Hold；5: electrical equipment general supply；6: regeneration energy-consuming device
Specific embodiment
Below in conjunction with attached drawing, clear, complete description is carried out to the technical solution in the present invention, it is clear that described
Embodiment is a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Embodiment one
As shown in Figure 1, energy-saving device of elevator includes DC bus 2, energy storage equipment 4, power detection device, at least one is inverse
Become device 3 and at least one electrical equipment general supply 5；
Two direct-flow input ends of each inverter 3 connect the positive and negative busbar of DC bus 2 respectively, and ac output end connects respectively
Different motor M；
Inverter 3 has motoring condition and reproduced state two states, the output power of inverter when motoring condition
It is positive, DC bus electric energy is provided to motor；The output power of inverter is negative when reproduced state, by motor feedback electric energy
It is delivered to DC bus；
Two direct-flow input ends of each electrical equipment general supply connect the positive and negative busbar of DC bus respectively, and output connects electricity consumption and sets
It is standby；The output power of electrical equipment general supply, which is greater than, is equal to 0, and DC bus electric energy is provided to electrical equipment；
The power detection device is for detecting the output for connecing each inverter and electrical equipment general supply on bus
The summation of power；
Electrical equipment general supply is DC/DC uni-directional converter and/or uni-directional converter DC/AC uni-directional converter；Electrically set
Standby general supply, the electrical electricity consumption that DC bus electric energy is converted to the direct current of different voltages grade or exchange is supplied to elevator is set
Standby, generally DC/DC uni-directional converter is also possible to DC/AC uni-directional converter；
The energy storage equipment connects between positive and negative busbar；
The energy storage equipment includes electric power management device 41 and super capacitor 42；
The electric power management device 41 is used for the power flow deployed between DC bus 2 and super capacitor 42, super electricity
Hold the electric energy that can store certain capacity；
When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is negative, and
And DC bus-bar voltage is higher than the first setting voltage X, then direct current bus bar can be delivered to by the electric power management device control
Super capacitor；
When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is positive, and
And DC bus-bar voltage lower than the second setting voltage Y, then electric energy on super capacitor is delivered to by the electric power management device control
DC bus；
First setting voltage X is greater than the second setting voltage Y.
Preferably, energy-saving device of elevator further includes rectifier bridge stack 1；
The rectifier bridge stack 1 is provided to DC bus 2 after electric main is converted to direct current；
The output voltage of the rectifier bridge stack 1 is greater than the second setting voltage Y, and less than the first setting voltage X.
Preferably, energy-saving device of elevator further includes regeneration energy-consuming device；
The regeneration energy-consuming device 6 includes regeneration resistance and the brake switch being connected between positive and negative busbar.
The energy-saving device of elevator of embodiment one, electrical equipment general supply provide elevator normal operation and all special operation conditions
All electric energy needed for operation, no matter which kind of operating status inverter in parallel on DC bus is in, and electrical equipment is always electric
Source obtains electric energy from DC bus.When inverter gross output in parallel on DC bus is negative, busbar voltage liter
High (higher than the output voltage of rectifier bridge stack), the electric energy of DC bus is mainly provided by inverter；When in parallel on DC bus
Inverter gross output be timing, the electric energy of DC bus is provided by external power supply and/or energy storage equipment.As direct current mother
When inverter gross output in parallel is negative on line, the regenerative electric energy of motor is sent via DC bus to electricity by inverter
Gas equipment general supply, the economized path are first sent by inverter via DC bus compared to when electrical equipment general supply is not configured
To energy storage equipment, when use, is sent to the path of DC bus by energy storage equipment again, and conversion links are few, therefore the high (section of energy-saving efficiency
Energy efficiency refers to the ratio of the electric energy and the electric energy consumed when not configuring energy saver saved when configuration energy saver).Due to electricity
Gas equipment general supply consumes always electric energy when elevator is powered, so the electric energy power requirement for needing to be fed back to energy storage equipment can fit
Work as reduction, reduces and regenerate the resistance power consumption of energy-consuming device to energy storage equipment device stress and require to reduce, and not volume
The increase of overall cost is brought outside.
Embodiment two
Based on the energy-saving device of elevator of embodiment one, as shown in Fig. 2, the electric power management device includes that the first insulated gate is double
Gated transistors IGBT1, the second insulated gate bipolar transistor IGBT 2, the first inductance L1, first diode D1, the second diode D2,
Third diode D3 and the 4th diode D4；
The emitter of first insulated gate bipolar transistor connects the collector of the second insulated gate bipolar transistor；
The emitter of the collector of first insulated gate bipolar transistor and the second insulated gate bipolar transistor connects positive and negative respectively
Bus；
First inductance one terminates the emitter of the first insulated gate bipolar transistor, and another termination super capacitor is just
Pole；
The cathode of the super capacitor connects negative busbar；
Third diode negative terminal connects positive bus-bar, is just terminating the anode of the super capacitor；
4th diode negative terminal connects the anode of the super capacitor, just terminates negative busbar.
The both ends first diode D1 connect the emitter and collector of the first insulated gate bipolar transistor IGBT 1 respectively；
Second both ends diode D2 connect the emitter and collector of the second insulated gate bipolar transistor IGBT 2 respectively.
The energy-saving device of elevator of embodiment two, reactor, insulated gate bipolar transistor, two pole of afterflow in energy storage equipment
The rated current specification of the devices such as pipe, super capacitor can be reduced accordingly,
Embodiment three
Based on embodiment one, energy-saving device of elevator has three elevator group controllings, and three elevator specifications are payload ratings
1050kg, normal speed 1.75m/s, the capacity 250Wh of energy storage equipment.The inverter of this three elevators is connected in parallel on direct current mother
Line, while the electrical equipment general supply of three elevators is also connected in parallel on DC bus.
Averagely there is the regenerating power of 6KW when the elevator regenerated operation of above-mentioned specification, it is assumed that the electrical equipment of the elevator is always electric
Mean power when source operates normally is 600W, and mean power when standby mode is 100W, DC bus-bar voltage 540V, if
Determine DC bus and absorb DC bus electric energy greater than 630V starting energy storage equipment, setting DC bus is less than 530V starting accumulation of energy dress
Release electric energy is set to DC bus.The super-capacitor voltage range of energy storage equipment is 100V to 200V.
Assuming that a certain moment, there is an elevator inverter to be in reproduced state, another two elevators stop, then direct current at this time
Inverter gross output in parallel is -6KW on bus, and all electrical equipment general supply power in parallel are 1.8KW, the two
The sum of be -4.2KW, consider general energy-saving device of elevator, feedback current range is 30A to 60A, considers to utilize spy of the invention
Sign, then feedback current range is 21A to 42A, and feedback power requires to be substantially reduced.
When being just initially located in above-mentioned state, busbar voltage is in 540V or so, since inverter electric energy is persistently fed back to directly
Bus is flowed, DC bus-bar voltage is gradually lifted, and after reaching 630V, starting energy storage equipment absorbs DC bus electric energy, super capacitor
Voltage is gradually lifted.
After the elevator that this is in reproduced state stops, being in standby, then it is in parallel inverse on DC bus at this time
Become device general power as 0KW, all electrical equipment general supply power in parallel are 300W, sum of the two 300W, with electrical
Equipment general supply consumes the electric energy of DC bus, and the voltage of DC bus gradually decreases, and lower than after 530V, starts energy storage equipment
Electric energy is discharged to DC bus.
The above is only preferred embodiment of the present application, it is not used to limit the application.Come for those skilled in the art
It says, various changes and changes are possible in this application.Within the spirit and principles of this application, made any modification, equivalent
Replacement, improvement etc., should be included within the scope of protection of this application.
Claims (6)
1. a kind of energy-saving device of elevator, which is characterized in that including DC bus, energy storage equipment, power detection device, at least one
Inverter and at least one electrical equipment general supply；
Two direct-flow input ends of each inverter connect the positive and negative busbar of DC bus respectively, and ac output end connects different electricity respectively
Machine；
Inverter has motoring condition and reproduced state two states, and the output power of inverter is positive when motoring condition,
DC bus electric energy is provided to motor；The output power of inverter is negative when reproduced state, and motor feedback electric energy is conveyed
To DC bus；
Electrical equipment general supply is DC/DC uni-directional converter and/or uni-directional converter DC/AC uni-directional converter；
Two direct-flow input ends of each electrical equipment general supply connect the positive and negative busbar of DC bus respectively, and output connects electrical equipment；
The output power of electrical equipment general supply, which is greater than, is equal to 0, and DC bus electric energy is provided to electrical equipment；
The power detection device is for detecting the output power for connecing each inverter and electrical equipment general supply on bus
Summation；
The energy storage equipment connects between positive and negative busbar；
The energy storage equipment includes electric power management device and super capacitor；
The electric power management device is used for the power flow deployed between DC bus and super capacitor；
When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is negative, and it is straight
It flows busbar voltage and is higher than the first setting voltage X, then direct current bus bar can be delivered to super by the electric power management device control
Capacitor；
When the summation of the output power of each inverter and each electrical equipment general supply in parallel on DC bus is positive, and it is straight
Busbar voltage is flowed lower than the second setting voltage Y, then electric energy on super capacitor is delivered to direct current by the electric power management device control
Bus；
First setting voltage X is greater than the second setting voltage Y.
2. energy-saving device of elevator according to claim 1, which is characterized in that
Energy-saving device of elevator further includes rectifier bridge stack；
The rectifier bridge stack is provided to DC bus after electric main is converted to direct current；
The output voltage of the rectifier bridge stack is greater than the second setting voltage Y, and less than the first setting voltage X.
3. energy-saving device of elevator according to claim 1, which is characterized in that
Energy-saving device of elevator further includes regeneration energy-consuming device；
The regeneration energy-consuming device includes the regeneration resistance and brake switch being connected between positive and negative busbar.
4. energy-saving device of elevator according to claim 1, which is characterized in that
The electric power management device includes the first insulated gate bipolar transistor, the second insulated gate bipolar transistor, the first inductance, the
Three diodes and the 4th diode；
The emitter of first insulated gate bipolar transistor connects the collector of the second insulated gate bipolar transistor；
The emitter of the collector of first insulated gate bipolar transistor and the second insulated gate bipolar transistor connects positive and negative busbar respectively；
First inductance one terminates the emitter of the first insulated gate bipolar transistor, the anode of another termination super capacitor；
The cathode of the super capacitor connects negative busbar；
Third diode negative terminal connects positive bus-bar, is just terminating the anode of the super capacitor；
4th diode negative terminal connects the anode of the super capacitor, just terminates negative busbar.
5. energy-saving device of elevator according to claim 1, which is characterized in that
The capacity of the super capacitor is 250Wh.
6. energy-saving device of elevator according to claim 2, which is characterized in that
The output voltage of the rectifier bridge stack is 540V；
First sets voltage X as 630V；
Second sets voltage Y as 530V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810043104.9A CN110048445B (en) | 2018-01-17 | 2018-01-17 | Elevator energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810043104.9A CN110048445B (en) | 2018-01-17 | 2018-01-17 | Elevator energy-saving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110048445A true CN110048445A (en) | 2019-07-23 |
| CN110048445B CN110048445B (en) | 2021-05-25 |
Family
ID=67273029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810043104.9A Active CN110048445B (en) | 2018-01-17 | 2018-01-17 | Elevator energy-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110048445B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5712456A (en) * | 1996-04-10 | 1998-01-27 | Otis Elevator Company | Flywheel energy storage for operating elevators |
| CN102180390A (en) * | 2011-03-08 | 2011-09-14 | 苏州圣元电器有限公司 | Frequency-conversion traction equipment energy-saving system for elevator |
| CN102372198A (en) * | 2010-08-12 | 2012-03-14 | 上海三菱电梯有限公司 | Control device for elevator |
| CN103001238A (en) * | 2011-09-19 | 2013-03-27 | 上海三菱电梯有限公司 | Elevator energy saving system |
| CN106385095A (en) * | 2016-08-30 | 2017-02-08 | 成都英格瑞德电气有限公司 | Module applicable to energy storage power generation scheme of elevator |
-
2018
- 2018-01-17 CN CN201810043104.9A patent/CN110048445B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5712456A (en) * | 1996-04-10 | 1998-01-27 | Otis Elevator Company | Flywheel energy storage for operating elevators |
| CN102372198A (en) * | 2010-08-12 | 2012-03-14 | 上海三菱电梯有限公司 | Control device for elevator |
| CN102180390A (en) * | 2011-03-08 | 2011-09-14 | 苏州圣元电器有限公司 | Frequency-conversion traction equipment energy-saving system for elevator |
| CN103001238A (en) * | 2011-09-19 | 2013-03-27 | 上海三菱电梯有限公司 | Elevator energy saving system |
| CN106385095A (en) * | 2016-08-30 | 2017-02-08 | 成都英格瑞德电气有限公司 | Module applicable to energy storage power generation scheme of elevator |
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| Publication number | Publication date |
|---|---|
| CN110048445B (en) | 2021-05-25 |
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