CN101527458A - Parallel type energy feedback elevator system - Google Patents
Parallel type energy feedback elevator system Download PDFInfo
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- CN101527458A CN101527458A CN200910038493A CN200910038493A CN101527458A CN 101527458 A CN101527458 A CN 101527458A CN 200910038493 A CN200910038493 A CN 200910038493A CN 200910038493 A CN200910038493 A CN 200910038493A CN 101527458 A CN101527458 A CN 101527458A
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- energy feedback
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The invention discloses a parallel type energy feedback elevator system comprising a variable frequency driving main loop of an elevator, an energy feedback device and a controller, wherein the variable frequency driving main loop consists of an uncontrollable rectifier bridge module, a direct current bus capacitor and an inverting power module; the energy feedback device consists of a boosting and filtering device, a PWM rectifier module, a direct current bus capacitor and a power diode module; the input end of a three-phase power supply is provided with two current sensors; a three-phase input power end of a motor is provided with two current sensors which are used for providing current feedback signals for the controller respectively; the controller is used for providing PWM control signals for the inverting power module and the PWM rectifier module and directly controlling the on and the off of a switch thereof; and the power diode module consists of two power diodes which are serially connected at the positive side and the negative side of a direct current bus. The energy feedback elevator system can reduce the capacity by half, simultaneously restrict the circulating current in the circuit well, and can realize the purposes of energy saving, environment production and cost reduction.
Description
Technical field
The invention belongs to a kind of elevator drive system, the elevator drive system of bringing back to life as energy when the compensation of rate of doing work factor, generating state when referring to a kind of tool motoring condition especially with energy feedback function.
Background technology
At present in the elevator industry, the elevator that has energy feedback function be each big producer at line products, and the elevator of these band energy feedback functions generally can be divided into two big classes, a class is the tandem feedback system, another kind of is parallel feedback system.
The tandem feedback system is meant, directly uncontrollable rectification module is replaced with the controlled power module, but adopt two PWM master's power topologys of four-quadrant operation, can directly realize the two-way flow of energy, the overall efficiency height, power factor (PF) all can approach 1 under elevator generating or motoring condition.Adopt the elevator enterprises of this kind tandem feedback system at present, generally all be based on this series connection integral type feedback frequency converter and make lift product.But adopt the cost height of this mode, the volume of device is bigger.
Parallel feedback system is meant, keeps original frequency conversion major loop constant, increase by one group of energy back feed device again and realize energy feedback function under the elevator generating state, and during the elevator motoring condition, then still by the moving row of original uncontrollable rectifier system.This system can make power factor (PF) approach 1 when the elevator generating state, but the power factor (PF) when motoring condition is then lower, and the harmonic wave of its generation can pollute electrical network.Adopting the elevator enterprises of this parallel feedback system at present, is the energy back feed device of direct outsourcing maturation mostly, is attempted by in the original frequency converter.For example, Granted publication number discloses a kind of " elevator variable frequency device external hanging type energy back feed device " in the Chinese patent literature of CN200990575Y, adopt the cost of this mode also higher, and the power factor (PF) of elevator when motoring condition is low, harmonic wave is big.For another example, publication number is to disclose a kind of " being applicable to the energy feedback and the harmonic reactive-load compensation system of rectifying device " in the Chinese patent literature of CN101237185A, but this system does not add diode in the N of dc bus side, can need to strengthen the capacity specifications of module owing to three-phase imbalance produces circulating current in the loop of PWM rectification module and uncontrollable rectifier bridge module; System's Harmonics of Input is big, peak value is high, influences the module capacity specification equally; And the quantity of its input side transducer is many, and model is many, also can cause system cost to improve.
Summary of the invention
The object of the present invention is to provide a kind of parallel type energy feedback elevator system, energy back feed device in this system partly is that the form with parallel connection is connected on and drives in the major loop, can improve power factor (PF), energy during with generating state feeds back to electrical network, and realizes the effect that energy-conserving and environment-protective, cost reduce.
Technical solution of the present invention is: 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 by a described dc-link capacitance positive pole of anodal connection, negative pole connects the power diode and anodal described dc-link capacitance negative pole, a power diode composition of negative pole connection dc-link capacitance negative pole of being connected of dc-link capacitance positive pole.
By the control of driving governor to inverted power module and PWM rectification module, can make elevator when motoring condition, do the behavior of PFC (power factor compensation) by energy back feed device, can cut down the harmonic wave THD in the circuit, improve the power factor (PF) of whole system; When elevator during at generating state, the energy that elevator produced feeds back in the electrical network by energy back feed device and goes.When system operated in motoring condition and holds concurrently PFC, two power diodes of serial connection were used for suppressing the circulating current that the loop produces between PWM rectification module and the uncontrollable rectifier bridge module in the dc bus of energy back feed device, made three-phase loop balance.
Between three-phase power input end and described PWM rectification module, be provided with reactor, its effect is the peak value that suppresses the input current waveform of uncontrollable rectification module, and elongated the rise time of this electric current, thereby reduce the arithmetic speed requirement of PWM controller, make better response current ring control of driving governor in the system, the system that makes can realize the function of PFC better, and power factor (PF) and harmonic wave THD are more excellent, avoids the interference of PWM carrier signal to the PFC of system function simultaneously.
The described filter that boosts is made up of boost reactor and filter capacitor.Can filter high order harmonic component, and the reactor in this filter and copped wave booster circuit of the common composition of PWM rectification module, the DC bus-bar voltage of energy back feed device is raise, so that guarantee to realize the function of energy feedback.
The invention has the advantages that: make elevator when motoring condition, owing to carried out PFC (power factor compensation), the gained power factor (PF) can improve, and elevator can feed back to electrical network with energy when generating state; And because energy back feed device is connected in parallel in the major loop, make the capacity of energy back feed device to reduce by half, the circulating current between the good restraining loop is realized the purpose that energy-conserving and environment-protective, cost reduce simultaneously.
Description of drawings
Fig. 1 is the structured flowchart of the embodiment of the invention;
Fig. 2 is the circuit diagram of the embodiment of the invention;
Fig. 3 is the input current waveform figure of the uncontrollable rectification module of the embodiment of the invention;
Fig. 4 is the input current waveform figure of the energy back feed device of the embodiment of the invention;
Fig. 5 is the power supply input current waveform figure of the embodiment of the invention;
1, current sensor, 2, reactor, 3, uncontrollable rectification module, 4, inverted power module, 5, the filter that boosts, 6, the PWM rectification module, 7, dc-link capacitance, 8, power diode module, 9, current sensor, 10, motor, 11, car, 12, counterweight, 13, driving governor, 14, dc-link capacitance.
Embodiment
Embodiment:
Consult Fig. 1 and 2, a kind of parallel type energy feedback elevator system of the present invention is made up of current sensor 1, reactor 2, uncontrollable rectification module 3, inverted power module 4, the filter 5 that boosts, PWM rectification module 6, dc-link capacitance 7, power diode module 8, current sensor 9, driving governor 13, dc-link capacitance 14.The elevator drive major loop formed in the system of the present invention of reactor 2, uncontrollable rectification module 3, dc-link capacitance 14, inverted power module 4 wherein; The energy back feed device that filter 5, PWM rectification module 6, dc-link capacitance 7 and the power diode module 8 of boosting formed in the system of the present invention.
The DC side of the PWM rectification module 6 in the energy back feed device is connected with power diode (led) module 8 with the DC side of uncontrollable rectification module 3.Power diode module 8 is by described dc-link capacitance 14 positive poles of anodal connection, negative pole connects the power diode and anodal described dc-link capacitance 14 negative poles, a power diode composition of negative pole connection dc-link capacitance 7 negative poles of being connected of dc-link capacitance 7 positive poles.Three-phase input supply terminal in system of the present invention is provided with two current sensors 1, and be provided with two current sensors 9 equally at the three-phase input supply terminal of motor, the signal conveys of these two groups of current sensors participates in the algorithm of PWM control in driving governor 13.
When system works of the present invention during at motoring condition, the input current of uncontrollable rectification module 3 as shown in Figure 3, and the voltage waveform of system's power supply is sinusoidal wave, is 1 if want input power, then the power supply input current waveform also will be sine wave, and phase place is identical with supply voltage; Therefore, make the source current waveform become sine wave from as shown in Figure 3 waveform, energy back feed device part in the system of the present invention will be carried out the behavior of PFC (power factor compensation), and the input current waveform of this energy back feed device (filter 5 promptly boosts) should be as shown in Figure 4.That is to say, make the current waveform of Fig. 3 add that the current waveform of Fig. 4 should become one group of sine wave, shown in the dotted line of Fig. 5.
At two current sensors 1 of three-phase input supply terminal with the signal feedback of input current to driving governor 13, driving governor 13 output pwm control signals are to PWM rectification module 6, make PWM rectification module 6 work, and because dc-link capacitance 14 as the energy storage original paper, thereby can produce the needed offset current of PFC (power factor compensation).
Because system works of the present invention is at motoring condition and when making PFC, between PWM rectification module 6 and uncontrollable rectifier bridge module 3, formed the loop, and because the influence of devices such as dc-link capacitance, make and three-phase loop imbalance produce circulating current thereby understand in the loop between PWM rectification module 6 and uncontrollable rectifier bridge module 3.Therefore, will suppress circulating current in the loop at the power diode of bus negative side.
The main front end that drives the loop in system of the present invention increases a reactor 2, the peak value that can suppress the input current waveform of uncontrollable rectification module 3 effectively, and elongated the rise time of this electric current, make better response current ring control of driving governor 13 in the system, make system realize the function of PFC better, power factor (PF) and harmonic wave THD are more excellent.
When system works of the present invention during at generating state, because the weight imbalance of lift car 11 and counterweight 12, will inevitably produce power and get back in the native system by motor 10, the electric energy that generating state is produced down enters native system from inverted power module 4, because uncontrollable rectifier bridge module 3 has been blocked the path that electrical energy flows is wired back and netted, therefore the DC bus-bar voltage that drives major loop will the pump liter, when its voltage pump rises to the voltage of specific energy feedback device dc bus when high, power diode at the bus side of the positive electrode will be opened, the switch on and off of driving governor 13 control PWM rectification modules 6 makes electric energy flow through from PWM rectification module 6 and boosts filter 5 and get back to electrical network and go.
Above-listed detailed description is at the specifying of one of the present invention possible embodiments, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (3)
1, a kind of parallel type energy feedback formula elevator device, comprise uncontrollable rectifier bridge module (3), dc-link capacitance (14), inverted power module (4) is formed the frequency conversion drive major loop of elevator, with the filter that boosts (5), PWM rectification module (6), dc-link capacitance (7), the energy back feed device that power diode module (8) is formed, and controller (13), it is characterized in that: be provided with two current sensors (1) at three-phase power input end, be provided with two current sensors (9) at motor three-phase input supply terminal, be respectively applied for to described controller (13) current feedback signal is provided, described controller (13) is used to inverted power module (4) and PWM rectification module (6) that pwm control signal is provided, directly control its switch on and off, described power diode module (8) is by anodal described dc-link capacitance (a 14) positive pole that connects, negative pole connects an anodal power diode of dc-link capacitance (7) and anodal described dc-link capacitance (a 14) negative pole that is connected, and negative pole connects the power diode of dc-link capacitance (7) negative pole and forms.
2, a kind of parallel type energy feedback formula elevator device according to claim 1 is characterized in that: be provided with reactor (2) between three-phase power input end and described PWM rectification module (6).
3, a kind of parallel type energy feedback formula elevator device according to claim 1 and 2, it is characterized in that: the described filter that boosts (5) is made up of boost reactor and filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100384937A CN101527458B (en) | 2009-04-08 | 2009-04-08 | Parallel type energy feedback elevator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100384937A CN101527458B (en) | 2009-04-08 | 2009-04-08 | Parallel type energy feedback elevator system |
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| CN101527458A true CN101527458A (en) | 2009-09-09 |
| CN101527458B CN101527458B (en) | 2011-11-23 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807821A (en) * | 2010-03-05 | 2010-08-18 | 南京理工大学 | Energy saving system of elevator |
| CN102354982A (en) * | 2011-09-29 | 2012-02-15 | 日立电梯（中国）有限公司 | Energy feedback elevator system |
| CN102351119A (en) * | 2011-09-30 | 2012-02-15 | 李必春 | Public direct-current circuit technology for alternating-current permanent-magnet synchronous variable-frequency elevator |
| CN102896734A (en) * | 2011-07-26 | 2013-01-30 | 住友重机械工业株式会社 | Injection moulding machine |
| CN103515977A (en) * | 2013-03-21 | 2014-01-15 | 王林兵 | Single-phase integral energy feedback device |
| CN103944409A (en) * | 2014-04-17 | 2014-07-23 | 华为技术有限公司 | Control method, equipment and system for frequency convertor |
| CN106655262A (en) * | 2016-11-25 | 2017-05-10 | 上海工程技术大学 | Elevator energy recycling wireless charging system and method |
| CN106849174A (en) * | 2017-03-31 | 2017-06-13 | 深圳市贝壳电气技术有限公司 | A kind of lift energy feedback circuit, device and electric life controller |
| CN109861198A (en) * | 2019-03-08 | 2019-06-07 | 广东美的制冷设备有限公司 | Fan power circuit, fan assembly and air conditioner |
| CN110348354A (en) * | 2019-07-02 | 2019-10-18 | 南京智睿能源互联网研究院有限公司 | A kind of power load identifying system, method and accommodation electricity usage management system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200990575Y (en) * | 2006-12-31 | 2007-12-12 | 武汉欧德自动控制技术有限公司 | Elevator frequency changer external hanging energy feedback device |
| CN101237185A (en) * | 2007-12-07 | 2008-08-06 | 华中科技大学 | Energy feedback and harmonic wave passive compensation system applicable to commutation device |
-
2009
- 2009-04-08 CN CN2009100384937A patent/CN101527458B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807821A (en) * | 2010-03-05 | 2010-08-18 | 南京理工大学 | Energy saving system of elevator |
| CN102896734A (en) * | 2011-07-26 | 2013-01-30 | 住友重机械工业株式会社 | Injection moulding machine |
| CN102354982A (en) * | 2011-09-29 | 2012-02-15 | 日立电梯（中国）有限公司 | Energy feedback elevator system |
| CN102351119A (en) * | 2011-09-30 | 2012-02-15 | 李必春 | Public direct-current circuit technology for alternating-current permanent-magnet synchronous variable-frequency elevator |
| CN103515977A (en) * | 2013-03-21 | 2014-01-15 | 王林兵 | Single-phase integral energy feedback device |
| CN103944409B (en) * | 2014-04-17 | 2016-08-24 | 华为技术有限公司 | The control method of a kind of converter, equipment and system |
| CN103944409A (en) * | 2014-04-17 | 2014-07-23 | 华为技术有限公司 | Control method, equipment and system for frequency convertor |
| CN106655262A (en) * | 2016-11-25 | 2017-05-10 | 上海工程技术大学 | Elevator energy recycling wireless charging system and method |
| CN106655262B (en) * | 2016-11-25 | 2019-01-18 | 上海工程技术大学 | A kind of elevator energy recycling wireless charging system |
| CN106849174A (en) * | 2017-03-31 | 2017-06-13 | 深圳市贝壳电气技术有限公司 | A kind of lift energy feedback circuit, device and electric life controller |
| CN109861198A (en) * | 2019-03-08 | 2019-06-07 | 广东美的制冷设备有限公司 | Fan power circuit, fan assembly and air conditioner |
| CN110348354A (en) * | 2019-07-02 | 2019-10-18 | 南京智睿能源互联网研究院有限公司 | A kind of power load identifying system, method and accommodation electricity usage management system |
| CN110348354B (en) * | 2019-07-02 | 2023-06-06 | 南京智睿能源互联网研究院有限公司 | Power utilization load identification system, method and dormitory power utilization management system |
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| Publication number | Publication date |
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| CN101527458B (en) | 2011-11-23 |
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Application publication date: 20090909 Assignee: Hitachi elevator (Chinese) Co. Ltd. stone factory Assignor: Hitachi Elevator (China) Co., Ltd. Contract record no.: 2013440000492 Denomination of invention: Parallel type energy feedback elevator system Granted publication date: 20111123 License type: Common License Record date: 20131028 |
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