CN201674235U - Energy feedback elevator system - Google Patents
Energy feedback elevator system Download PDFInfo
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- CN201674235U CN201674235U CN2010201815863U CN201020181586U CN201674235U CN 201674235 U CN201674235 U CN 201674235U CN 2010201815863 U CN2010201815863 U CN 2010201815863U CN 201020181586 U CN201020181586 U CN 201020181586U CN 201674235 U CN201674235 U CN 201674235U
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Abstract
The utility model relates to an energy feedback elevator system which lets a plurality of variable frequency elevators to share an energy feedback device. The system comprises an electric supply installation (1), elevator transducers, a traction motor (2) and an energy feedback device (3), wherein the electric supply installation is used for providing electric power for devices of the system; the traction motor (2) is connected with the elevator transducers; and the energy feedback device (3) is arranged between the elevator transducers and the electric supply installation (1) and is used for converting elevator mechanical energy into the electric power and sending the electric power back to the electric supply installation (1) after sorting power. The utility model is characterized in that the elevator system at least comprises two elevator transducers (4 and 4'), and the output ends of the elevator transducers (4 and 4') are connected with the energy feedback device (3) by a transducer feedback connector (5). After the mechanical energy of a plurality of elevators is converted into the electric power, the elevators are simultaneously connected with the energy feedback device by the transducer feedback connector, so the number of the energy feedback device is reduced, and the cost is saved. The electricity-saving quantity of the feedback device is doubled.
Description
Technical field
The utility model relates to a kind of elevator device that has energy feedback function, especially makes the energy feedback elevator system of the shared energy back feed device of multi-section frequency-changing elevator.
Background technology
Along with the fast development of China's city real estate, skyscraper is on the increase, and the vehicles that elevator vertically transports as skyscraper have obtained using widely, and skyscraper often uses the elevator of many same model.Generally speaking, the elevator electric drive system is made up of electric power system, frequency converter (motor speed control device), speed feedback device, hoisting motor etc.Have maximum mechanical kinetic energy after the elevator startup operation of employing frequency control reaches highest running speed, elevator will progressively slow down till the elevator stop motion before reaching destination layer, and this process is the process that elevator traction machine discharges mechanical kinetic energy.Elevator still is a potential energy load, in order evenly to drag load, elevator is made up of passenger car and counterbalancing piece the load that traction machine drags, have only when the car loading capacity is about 50%, the just mutual balance of car and counterbalancing piece, otherwise car and counterbalancing piece just have of poor quality, produce mechanical potential (the elevator heavy duty is descending and underloading is up) when making the elevator operation.
Elevator unnecessary mechanical energy in service (containing potential energy, kinetic energy) becomes direct current energy to be stored in the electric capacity in the frequency converter DC loop by motor with inverter converts.The electric energy that is transmitted back in the electric capacity is many more, and capacitance voltage is just high more, and the electric energy as untimely releasing capacitor stores will produce the overvoltage fault, and frequency converter is quit work, and elevator can't normally move.Present domestic most frequency control elevators solve the overvoltage method and are: after overvoltage produces, connect an energy consumption resistance between dc bus, energy is discharged.Move up and down if elevator brake frequently or often is in nonequilibrium condition, then energy dissipation is serious.
Therefore generally use elevator energy feedback device, realize energy-conservationly, this device can convert elevator machine to electric energy effectively and send into energy storage in the DC loop electric capacity, is transmitted back in the electrical network.
Chinese invention patent application 200910038493.7 discloses a kind of parallel type energy feedback elevator system, comprise uncontrollable rectifier bridge module, dc-link capacitance, inverted power module is formed the frequency conversion drive major loop of elevator, with the filter that boosts, the PWM rectification module, dc-link capacitance, the energy back feed device that the power diode module is formed, and controller, be provided with two current sensors at three-phase power input end, be provided with two current sensors at motor three-phase input supply terminal, be respectively applied for to described controller current feedback signal is provided, described controller is used to inverted power module and PWM rectification module that pwm control signal is provided, directly control its switch on and off, described power diode module is made up of two power diodes that are connected in series in dc bus side of the positive electrode and negative side.The capacity of energy back feed device of the present invention can reduce by half, and the circulating current between the good restraining loop is realized the purpose that energy-conserving and environment-protective, cost reduce simultaneously.But the feedback device that such scheme adopts can only be supporting for an elevator, so the efficient of elevator energy feedback device is on the low side relatively, and cost is higher, and the investment payback time is longer.
The utility model content
For solving the deficiencies in the prior art, the utility model provides a kind of multi-section same model frequency-changing elevator to use the energy feedback elevator system of an elevator energy feedback device, and its cost is lower and efficient is high.
For achieving the above object, energy feedback elevator system of the present utility model, comprise be used for to each device of system provide electric power electric supply installation, elevator variable frequency device, the traction motor that links to each other with the elevator variable frequency device, be arranged between elevator variable frequency device and the electric supply installation, be recycled to the energy back feed device of electric supply installation after being used for converting elevator machine to electric energy and energy storage, this elevator device comprises two elevator variable frequency devices at least, and the output of described elevator variable frequency device links to each other with energy back feed device by frequency converter feedback connector.
Above-mentioned frequency converter feedback connector is made up of four heavy-duty diode D1, D2, D3, D4, the sub-DC of the direct-flow input end of described energy back feed device (+) links to each other with the negative pole of heavy-duty diode D1, D2, and the sub-DC of direct-flow input end (-) links to each other with the positive pole of heavy-duty diode D3, D4; The anodal P (B1) of elevator variable frequency device dc bus links to each other with heavy-duty diode D1 is anodal, and negative pole N links to each other with heavy-duty diode D3 negative pole; The anodal P (B1) ' of elevator variable frequency device dc bus links to each other with heavy-duty diode D2 is anodal, and negative pole N ' links to each other with heavy-duty diode D4 negative pole.
In addition, between electric supply installation and elevator variable frequency device, be provided with switch.
Adopted technique scheme, because the output of elevator variable frequency device links to each other with energy back feed device by frequency converter feedback connector, after can making the mechanical energy of many elevators be converted to electric energy, link to each other with energy back feed device simultaneously by frequency converter feedback connector, reduced the quantity of energy back feed device, saved cost, and the amount of electricity saving of feedback device doubles.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the present invention is done further to describe in detail:
Fig. 1 is that circuit of the present utility model connects block diagram;
Fig. 2 is a circuit connection diagram of the present utility model.
Embodiment
By Fig. 1, as can be known shown in Figure 2, present embodiment is two elevator variable frequency devices, this energy feedback elevator system, comprise be used for to each device of system provide electric power electric supply installation 1, elevator variable frequency device, the traction motor 2 that links to each other with the elevator variable frequency device, be arranged between elevator variable frequency device and the electric supply installation 1, be recycled to the energy back feed device 3 of electric supply installation 1 after being used for converting elevator machine to electric energy and energy storage, the output of elevator variable frequency device 4,4 ' links to each other with energy back feed device 3 by frequency converter feedback connector 5.At electric supply installation 1 and elevator variable frequency device 4, be provided with switch 6 between 4 ', 6 '.The R of frequency converter 4, S, T link to each other with A, B, the C three-phase of 380V electrical network by switch 6, and the R of frequency converter 4 ', S, T link to each other with A, B, the C three-phase of 380V electrical network by switch 6 '.
Frequency converter feedback connector 5 is made up of four heavy-duty diode D1, D2, D3, D4, the sub-DC of the direct-flow input end of described energy back feed device 3 (+) links to each other with the negative pole of heavy-duty diode D1, D2, and the sub-DC of direct-flow input end (-) links to each other with the positive pole of heavy-duty diode D3, D4; The anodal P (B1) of elevator variable frequency device 4 dc buss links to each other with heavy-duty diode D1 is anodal, and negative pole N links to each other with heavy-duty diode D3 negative pole; The anodal P (B1) ' of elevator variable frequency device 4 ' dc bus links to each other with heavy-duty diode D2 is anodal, and negative pole N ' links to each other with heavy-duty diode D4 negative pole.
Claims (3)
1. energy feedback elevator system, comprise the electric supply installation (1) that is used for providing electric power to each device of system, the elevator variable frequency device, the traction motor (2) that links to each other with the elevator variable frequency device, be arranged between elevator variable frequency device and the electric supply installation (1), be used for to convert elevator machine to be recycled to electric supply installation (1) after electric energy and the energy storage energy back feed device (3), it is characterized in that: this elevator device comprises two elevator variable frequency devices (4 at least, 4 '), the output of described elevator variable frequency device (4,4 ') links to each other with energy back feed device (3) by frequency converter feedback connector (5).
2. energy feedback elevator system according to claim 1, it is characterized in that: described frequency converter feedback connector (5) is made up of four heavy-duty diode D1, D2, D3, D4, the sub-DC of direct-flow input end (+) of described energy back feed device (3) links to each other with the negative pole of heavy-duty diode D1, D2, and the sub-DC of direct-flow input end (-) links to each other with the positive pole of heavy-duty diode D3, D4; The anodal P (B1) of elevator variable frequency device (4) dc bus links to each other with heavy-duty diode D1 is anodal, and negative pole N links to each other with heavy-duty diode D3 negative pole; The anodal P (B1) ' of elevator variable frequency device (4 ') dc bus links to each other with heavy-duty diode D2 is anodal, and negative pole N ' links to each other with heavy-duty diode D4 negative pole.
3. energy feedback elevator system according to claim 1 and 2 is characterized in that: be provided with switch (6,6 ') between electric supply installation (1) and elevator variable frequency device (4,4 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201815863U CN201674235U (en) | 2010-05-07 | 2010-05-07 | Energy feedback elevator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201815863U CN201674235U (en) | 2010-05-07 | 2010-05-07 | Energy feedback elevator system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674235U true CN201674235U (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201815863U Expired - Lifetime CN201674235U (en) | 2010-05-07 | 2010-05-07 | Energy feedback elevator system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437588A (en) * | 2011-10-14 | 2012-05-02 | 上海爱登堡电梯股份有限公司 | Energy feedback system |
| CN103427436A (en) * | 2012-05-22 | 2013-12-04 | 深圳市合兴加能科技有限公司 | System and method using direct current buses of frequency converters to isolate, convert and absorb regenerated electric energy |
-
2010
- 2010-05-07 CN CN2010201815863U patent/CN201674235U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437588A (en) * | 2011-10-14 | 2012-05-02 | 上海爱登堡电梯股份有限公司 | Energy feedback system |
| CN103427436A (en) * | 2012-05-22 | 2013-12-04 | 深圳市合兴加能科技有限公司 | System and method using direct current buses of frequency converters to isolate, convert and absorb regenerated electric energy |
| CN103427436B (en) * | 2012-05-22 | 2016-05-04 | 深圳市合兴加能科技有限公司 | By the system and method for the dc bus isolated variable absorption and regeneration electric energy of frequency converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |