CN101882795B - Regenerative electric energy feedback method for elevator and device thereof - Google Patents
Regenerative electric energy feedback method for elevator and device thereof Download PDFInfo
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- CN101882795B CN101882795B CN2010101745901A CN201010174590A CN101882795B CN 101882795 B CN101882795 B CN 101882795B CN 2010101745901 A CN2010101745901 A CN 2010101745901A CN 201010174590 A CN201010174590 A CN 201010174590A CN 101882795 B CN101882795 B CN 101882795B
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Abstract
The invention relates to a regenerative power energy feedback method for an elevator and a device thereof. The device comprises an inverter, a network voltage detection unit, a network current detection unit, a DSP control unit and a direct current voltage measuring unit, wherein the inverter is formed by connecting an IGBC controllable bridge circuit with an electric reactor; the direct current output end of the variable-frequence governor of the elevator is connected with the direct current end of the IGBC controllable bridge circuit; the output voltage of the inverter is merged into a power network supplying the power for the variable-frequence governor of the elevator to work through the electric reactor; the input end of the network voltage detection unit and the input end of the network current detection unit are respectively connected to the power network supplying power for the variable-frequence governor of the elevator to work; the output end of the network voltage detection unit and the output end of the network current detection unit are respectively connected with the DSP control unit; the DSP control unit is connected with the control end of the IGBC controllable bridge circuit through an IGBT driver; and the direct current output of the variable-frequence governor of the elevator is connected with the DSP control unit through the direct current voltage detection unit.
Description
Technical field
The present invention relates to the mechanical, electrical terraced field of tower, relate in particular to a kind of regenerative electric energy feedback method for elevator and device that had not only helped the mechanical, electrical terraced equipment safety operation of tower but also can reach the energy-saving and emission-reduction purpose.
Background technology
Motor on the mechanical, electrical ladder of tower can work in generating state in braking procedure, the electric flux that is produced produces pump through frequency converter braking operating state and rises direct voltage, and this voltage can destroy the operating state of frequency converter, and equipment component is worked the mischief.
The electric energy that is produced during with motor braking is through becoming dc storage in big electric capacity after the rectification, but too much electric charge accumulation can cause voltage to raise, thereby influences the operate as normal of frequency converter.For this reason, conventional method is with resistance unnecessary electric charge to be released.According to the data introduction, China has 910,000 elevators now, and major part is old working method; When it works in generating state, employing be to utilize resistance to brake, the electric energy that is about to be sent is allowed to condition at and consumes on the high-power resistance; Produce very big heat simultaneously, very unfavorable to the operation of motor.In order to make resistance heat radiation, corresponding cooling system must be arranged, both increased equipment investment, also extraly produced more energy consumption, waste a large amount of electric energy every year.
Summary of the invention
The present invention mainly solves the electric energy that the motor on the mechanical, electrical ladder of original tower produces and consumes through high-power resistance in braking procedure, both be unfavorable for the operation of motor, can work the mischief to equipment component, slatterns the technical problem of a large amount of electric energy again; A kind of regenerative electric energy feedback method for elevator and device are provided; The electric energy that can the motor on the mechanical, electrical ladder of tower be produced in braking procedure is handled and is fed back to electrical network again; Effectively utilize this partly electric energy, reach the purpose of energy savings, and equipment component is also played a very good protection; Help the operation of motor, reduce maintenance, maintenance times.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals: regenerative electric energy feedback method for elevator of the present invention; Comprise the steps: the VD of lift variable-frequency governor is monitored; When it reaches set definite value; Carry out after the comprehensive computing VD that is connected the lift variable-frequency governor and the inverter between input voltage are controlled in conjunction with the phase place of the line voltage of giving the power supply of lift variable-frequency governor and frequency; Make inverter produce the voltage that is complementary with this electrical network character, feed back to this electrical network, supply with the lift variable-frequency governor.
As preferably, the output voltage of described inverter is detected and analyzes, then inverter is controlled, prevent that the DC component that inverter is introduced from injecting electrical network.
As preferably; The real-time dc voltage value of the described lift variable-frequency governor that records flows to the DSP control unit; The phase place and the frequency values of the described line voltage of giving the power supply of lift variable-frequency governor that records also flow to the DSP control unit; The output voltage of the described inverter that records also flows to the DSP control unit, carries out comprehensive computing by the DSP control unit, and the control signal of output is through the controlled bridge circuit of IGBT of IGBT driver drives inverter.
Lift regenerative electric energy feedback device of the present invention; Comprise by the controlled bridge circuit of IGBT link to each other with the reactor inverter that constitutes and network voltage detection unit, power network current detecting unit, DSP control unit, dc voltage measurement unit; The dc output end of lift variable-frequency governor connects the dc terminal of the controlled bridge circuit of described IGBT; The output voltage of inverter is incorporated the electrical network that supplies the work of lift variable-frequency governor into through reactor; The input of described network voltage detection unit, the input of power network current detecting unit are connected respectively to the electrical network that supplies the work of lift variable-frequency governor; The output of the output of network voltage detection unit, power network current detecting unit links to each other with described DSP control unit respectively; Described DSP control unit links to each other through the control end of IGBT driver with the controlled bridge circuit of described IGBT, and the direct current output of lift variable-frequency governor links to each other with the DSP control unit through the dc voltage measurement unit.Through the dc voltage measurement unit VD of lift variable-frequency governor is monitored; Detect the voltage and current to the electrical network of lift variable-frequency governor power supply respectively through network voltage detection unit, power network current detecting unit, above-mentioned measured value all flows to the DSP control unit.When the VD of lift variable-frequency governor reaches set definite value; The phase place that the DSP control unit combines this line voltage and frequency are carried out output signal controlling IGBT driver after analysis-by-synthesis and the computing, and then the operating state of the controlled bridge circuit of IGBT of inverter is controlled the voltage that inverter generation and this electrical network character are complementary; Feed back to the electrical network that supplies the work of lift variable-frequency governor; Reach the purpose of effectively utilizing the unnecessary electric energy that motor produces in braking procedure, both energy savings played a very good protection to the equipment component in motor, the frequency converter again; Help the operation of motor, reduce maintenance, maintenance times.The present invention utilizes the DSP control unit to carry out digital processing, realizes software phase-lock loop, thereby can carry out software analysis and control flexibly at an easy rate.Because realize that with hardware the circuit of phase-locked loop can become comparatively complicated; Therefore we utilize quick dsp processor to electrical network and inverter output carrying out control detection analysis; And can adopt the adaptive Optimal Control scheme, so that the electric energy of feedback grid reaches optimal conditions.
As preferably; Described lift regenerative electric energy feedback device also comprises the inverter output voltage detecting unit; The input of described inverter output voltage detecting unit is connected to the output of the controlled bridge circuit of IGBT, and the output of inverter output voltage detecting unit links to each other with described DSP control unit.The DC component that realization is exported inverter etc. is analyzed, in case the DC component that inverter is introduced is injected electrical network.
As preferably; Described network voltage detection unit comprises transformer T1, transport and placing device U5A and A/D converter; After the input side of transformer T1 and capacitor C 9 are parallelly connected again with resistance R 41, supply the electrical network of lift variable-frequency governor work to constitute series loop; Connect the in-phase input end of transport and placing device U5A after the outlet side of transformer T1 and resistance R 43 are parallelly connected, the output of the inverting input of transport and placing device U5A and transport and placing device U5A also connects, ground connection behind the output connecting resistance R42 of transport and placing device U5A and the series circuit of resistance R 45; Resistance R 42 and resistance R 45 and connect end through resistance R 44, capacitor C 12 ground connection; Resistance R 44 and capacitor C 12 and connect end and link to each other with the input of A/D converter, the output of A/D converter links to each other with described DSP control unit, resistance R 44 and capacitor C 12 and connect that end links to each other with the negative pole of diode D1, the positive pole with diode D2 links to each other; The plus earth of diode D1, the negative pole of diode D2 meets voltage 3.3V.All be connected with the network voltage detection unit on the three-phase of the electrical network of confession lift variable-frequency governor work.What introduce here is the structure that is connected in the network voltage detection unit on single-phase.Voltage signal on electrical network is single-phase is behind transformer T1, and the DC component ripple will after transport and placing device U5A amplification filtering, be sent into the A/D converter and change the accessible digital signal of DSP control unit into by filtering.
As preferably; Described inverter output voltage detecting unit comprises RC filter unit and resistance R 1, R2, R3, R4, R5, R6; In the three-phase output of the controlled bridge circuit of described IGBT; A is in series with resistance R 1 and R4 mutually and between the zero line; B is in series with resistance R 2 and R5 mutually and between the zero line, and C is in series with resistance R 3 and R6 mutually and between the zero line, and also contact, resistance R 2 and R5 and contact and resistance R 3 and R6 and the contact of resistance R 1 and R4 is linked described DSP control unit through described RC filter unit respectively.The output voltage signal of the controlled bridge circuit of IGBT directly obtains through electric resistance partial pressure, after RC filtering, sends into the DSP control unit and can analyze the DC component of inverter output etc., in case the DC component that inverter is introduced is injected electrical network.Simple in structure, it is convenient to realize, stable performance.
The invention has the beneficial effects as follows: reach the Based Intelligent Control to inverter through inverter, the electric energy that can the motor on the mechanical, electrical ladder of tower be produced in braking procedure is handled and is fed back to the electrical network that supplies the work of lift variable-frequency governor again, effectively utilizes this partly unnecessary electric energy; Practiced thrift the energy greatly, and the reduction of the caloric value of the mechanical, electrical terraced system of tower, machine room no longer need use air-conditioning; Equipment component is also played a very good protection; Help the operation of motor, improve braking effect, reduce maintenance work; Improve the useful life of whole lift, adapt to the engineering demand of fast braking and frequent braking.
Description of drawings
Fig. 1 is a kind of main circuit theory diagram of the present invention.
Fig. 2 is a kind of circuit theory diagrams of network voltage detection unit among the present invention.
Fig. 3 is a kind of circuit theory diagrams of inverter output voltage detecting unit among the present invention.
1. reactors among the figure, 2. network voltage detection unit, 3. power network current detecting unit, 4.DSP control unit; 5. inverter output voltage detecting unit, 6. dc voltage measurement unit, the controlled bridge circuit of 7.IGBT; 8.IGBT driver, 9.RC filter unit, 10. lift variable-frequency governor.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically technical scheme of the present invention.
Embodiment 1: the lift regenerative electric energy feedback device of present embodiment; As shown in Figure 1, comprise by the controlled bridge circuit 7 of IGBT link to each other with reactor 1 inverter that constitutes and network voltage detection unit 2, power network current detecting unit 3, DSP control unit 4, dc voltage measurement unit 6, inverter output voltage detecting unit 5.The dc output end of lift variable-frequency governor 10 connects the dc terminal of the controlled bridge circuit 7 of IGBT, and the output voltage of inverter is incorporated the electrical network that supplies 10 work of lift variable-frequency governor into through reactor 1.The input of the input of network voltage detection unit 2, power network current detecting unit 3 is connected respectively to the electrical network that supplies 10 work of lift variable-frequency governor, and the output of the output of network voltage detection unit 2, power network current detecting unit 3 links to each other with DSP control unit 4 respectively.The input of inverter output voltage detecting unit 5 is connected to the output of the controlled bridge circuit 7 of IGBT, and the output of inverter output voltage detecting unit 5 links to each other with DSP control unit 4.DSP control unit 4 links to each other through the control end of IGBT driver 8 with the controlled bridge circuit 7 of IGBT, and the direct current output of lift variable-frequency governor 10 links to each other with DSP control unit 4 through dc voltage measurement unit 6.
Be illustrated in figure 2 as the circuit theory diagrams of the network voltage detection unit 2 that the A that is connected in electrical network goes up mutually, be connected in network voltage detection unit that B, C go up mutually therewith roughly the same.The network voltage detection unit 2 that A goes up mutually comprises transformer T1, transport and placing device U5A and A/D converter; After the input side of transformer T1 and capacitor C 9 parallel connections again with resistance R 41, supply in the electrical network of lift variable-frequency governor 10 work A mutually circuit constitute series loop; Connect the in-phase input end of transport and placing device U5A after the outlet side of transformer T1 and resistance R 43 are parallelly connected; The output of the inverting input of transport and placing device U5A and transport and placing device U5A also connects; Ground connection behind the output connecting resistance R42 of transport and placing device U5A and the series circuit of resistance R 45, resistance R 42 and resistance R 45 and connect end through resistance R 44, capacitor C 12 ground connection, resistance R 44 and capacitor C 12 and connect to hold and link to each other with the input of A/D converter; The output of A/D converter links to each other with DSP control unit 4; Resistance R 44 and capacitor C 12 and connect end and not only linked to each other, but also linked to each other with the positive pole of diode D2 with the negative pole of diode D1, the plus earth of diode D1, the negative pole of diode D2 meets voltage 3.3V.
As shown in Figure 3, inverter output voltage detecting unit 5 comprises RC filter unit 9 and resistance R 1, R2, R3, R4, R5, R6.In the three-phase output of the controlled bridge circuit 7 of IGBT; A is in series with resistance R 1 and R4 mutually and between the zero line; B is in series with resistance R 2 and R5 mutually and between the zero line; C is in series with resistance R 3 and R6 mutually and between the zero line, and also contact, resistance R 2 and R5 and contact and resistance R 3 and R6 and the contact of resistance R 1 and R4 is linked DSP control unit 4 through RC filter unit 9 respectively.
The IGBT driver of present embodiment adopts the drive circuit that has soft turn-off function, will make output voltage be reduced to 9V from 15V, with the electric current of the controlled bridge circuit of restriction IGBT, thereby thoroughly turn-offs preceding preliminary treatment, and then realizes the purpose of soft shutoff.
Use the regenerative electric energy feedback method for elevator of above-mentioned lift regenerative electric energy feedback device to be: the VD through the 6 pairs of lift variable-frequency governors 10 in dc voltage measurement unit is monitored; Detect the voltage and current of the electrical network of giving 10 power supplies of lift variable-frequency governor respectively through network voltage detection unit 2, power network current detecting unit 3; Output voltage through the controlled bridge circuit 7 of IGBT in 5 pairs of inverters of inverter output voltage detecting unit detects, and above-mentioned measured value all flows to DSP control unit 4.When the VD of lift variable-frequency governor 10 reaches set definite value; The DSP control unit combines the phase place of this line voltage and the output voltage of frequency and inverter to carry out exporting signal controlling IGBT driver 8 after analysis-by-synthesis and the computing; And then the operating state of the controlled bridge circuit 7 of the IGBT of inverter controlled; Make inverter produce the voltage that is complementary with this electrical network character, feed back to the electrical network that supplies 10 work of lift variable-frequency governor.
The present invention produces the motor on the mechanical, electrical ladder of tower in braking procedure electric energy plays good recycling effect; Reach the purpose of energy savings; And the equipment component on the mechanical, electrical ladder of tower also played a very good protection; Help the operation of motor, reduce maintenance, maintenance times.
Claims (2)
1. regenerative electric energy feedback method for elevator; It is characterized in that comprising the steps: that the VD to the lift variable-frequency governor monitors; When it reaches set definite value; Carry out after the comprehensive computing VD that is connected the lift variable-frequency governor and the inverter between input voltage are controlled in conjunction with the phase place of the line voltage of giving the power supply of lift variable-frequency governor and frequency; Make inverter produce the voltage that is complementary with this electrical network character, feed back to this electrical network, supply with the lift variable-frequency governor; Output voltage to described inverter detects and analyzes, and then inverter is controlled, and prevents the DC component injection electrical network that inverter is introduced; The real-time dc voltage value of the lift variable-frequency governor that records flows to the DSP control unit; The phase place and the frequency values of the described line voltage of giving the power supply of lift variable-frequency governor that records also flow to the DSP control unit; The output voltage of the described inverter that records also flows to the DSP control unit; Carry out comprehensive computing by the DSP control unit, the control signal of output is through the controlled bridge circuit of IGBT of IGBT driver drives inverter.
2. lift regenerative electric energy feedback device that uses regenerative electric energy feedback method for elevator as claimed in claim 1; It is characterized in that comprising inverter and network voltage detection unit (2), power network current detecting unit (3), DSP control unit (4), dc voltage measurement unit (6) and the inverter output voltage detecting unit (5) that links to each other with reactor (1) and constitute by the controlled bridge circuit of IGBT (7); The dc output end of lift variable-frequency governor (10) connects the dc terminal of the controlled bridge circuit of described IGBT (7); The output voltage of inverter is incorporated the electrical network that supplies lift variable-frequency governor (10) work into through reactor (1); The input of the input of described network voltage detection unit (2), power network current detecting unit (3) is connected respectively to the electrical network that supplies lift variable-frequency governor (10) work; The output of the output of network voltage detection unit (2), power network current detecting unit (3) links to each other with described DSP control unit (4) respectively; Described DSP control unit (4) links to each other through the control end of IGBT driver (8) with the controlled bridge circuit of described IGBT (7); The direct current output of lift variable-frequency governor (10) links to each other with DSP control unit (4) through dc voltage measurement unit (6); The input of described inverter output voltage detecting unit (5) is connected to the output of the controlled bridge circuit of IGBT (7), and the output of inverter output voltage detecting unit (5) links to each other with described DSP control unit (4); Described network voltage detection unit (2) comprises transformer T1, transport and placing device U5A and A/D converter; After the input side of transformer T1 and capacitor C 9 are parallelly connected again with resistance R 41, supply the electrical network of lift variable-frequency governor (10) work to constitute series loop; Connect the in-phase input end of transport and placing device U5A after the outlet side of transformer T1 and resistance R 43 are parallelly connected; The output of the inverting input of transport and placing device U5A and transport and placing device U5A also connects; Ground connection behind the output connecting resistance R42 of transport and placing device U5A and the series circuit of resistance R 45, resistance R 42 and resistance R 45 and connect end through resistance R 44, capacitor C 12 ground connection, resistance R 44 and capacitor C 12 and connect to hold and link to each other with the input of A/D converter; The output of A/D converter links to each other with described DSP control unit (4); Resistance R 44 and capacitor C 12 and connect end and not only linked to each other, but also linked to each other with the positive pole of diode D2 with the negative pole of diode D1, the plus earth of diode D1, the negative pole of diode D2 meets voltage 3.3V; Described inverter output voltage detecting unit (5) comprises RC filter unit (9) and resistance R 1, R2, R3, R4, R5, R6; In the three-phase output of the controlled bridge circuit of described IGBT (7); A is in series with resistance R 1 and R4 mutually and between the zero line; B is in series with resistance R 2 and R5 mutually and between the zero line; C is in series with resistance R 3 and R6 mutually and between the zero line, and also contact, resistance R 2 and R5 and contact and resistance R 3 and R6 and the contact of resistance R 1 and R4 is linked described DSP control unit (4) through described RC filter unit (9) respectively.
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| CN2010101745901A CN101882795B (en) | 2010-05-17 | 2010-05-17 | Regenerative electric energy feedback method for elevator and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101745901A CN101882795B (en) | 2010-05-17 | 2010-05-17 | Regenerative electric energy feedback method for elevator and device thereof |
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| CN101882795B true CN101882795B (en) | 2012-09-26 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354982B (en) * | 2011-09-29 | 2013-10-16 | 日立电梯（中国）有限公司 | Energy feedback elevator system |
| CN102621501B (en) * | 2012-03-20 | 2014-07-02 | 天津电气传动设计研究所有限公司 | System and method for testing temperature rise and efficiency under rated power of high-power photovoltaic inverter |
| CN102897615B (en) * | 2012-09-20 | 2014-04-16 | 中达光电工业（吴江）有限公司 | Electricity feedback device and method of elevator and elevator |
| CN103508283B (en) * | 2013-09-18 | 2015-09-16 | 深圳市合兴加能科技有限公司 | Elevator energy efficiency monitoring system and method |
| CN104917424B (en) * | 2015-05-26 | 2018-05-22 | 深圳市英威腾电气股份有限公司 | A kind of motor internal contracting brake control system of building hoist |
| WO2019047474A1 (en) | 2017-09-11 | 2019-03-14 | 广东美的制冷设备有限公司 | Intelligent power module and air-conditioner controller |
| CN107492878B (en) * | 2017-09-11 | 2019-03-08 | 广东美的制冷设备有限公司 | Intelligent power module and controller of air conditioner |
| CN107492879B (en) * | 2017-09-11 | 2019-03-08 | 广东美的制冷设备有限公司 | Intelligent power module and controller of air conditioner |
| CN108152570B (en) * | 2017-12-29 | 2020-06-23 | Tcl空调器(中山)有限公司 | Alternating voltage regeneration detection method, system, storage medium and detection device |
| CN109946541B (en) * | 2019-03-22 | 2021-01-15 | 太原理工大学 | Offline test method for potential energy recovery device |
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| CN2171171Y (en) * | 1993-10-21 | 1994-07-06 | 合肥工业大学 | AC frequency-changer adjustable-speed regenerating electric energy feedback device |
| CN1929287A (en) * | 2005-09-07 | 2007-03-14 | 上海神源电气有限公司 | Device capable of returning electrical energy to electrified wire netting |
| CN101409453A (en) * | 2007-10-12 | 2009-04-15 | 深圳科士达科技股份有限公司 | Uninterruption power supply |
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2010
- 2010-05-17 CN CN2010101745901A patent/CN101882795B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2171171Y (en) * | 1993-10-21 | 1994-07-06 | 合肥工业大学 | AC frequency-changer adjustable-speed regenerating electric energy feedback device |
| CN1929287A (en) * | 2005-09-07 | 2007-03-14 | 上海神源电气有限公司 | Device capable of returning electrical energy to electrified wire netting |
| CN101409453A (en) * | 2007-10-12 | 2009-04-15 | 深圳科士达科技股份有限公司 | Uninterruption power supply |
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