CN101565138B - Discrete self-charging elevator energy feedback device - Google Patents
Discrete self-charging elevator energy feedback device Download PDFInfo
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- CN101565138B CN101565138B CN 200910068902 CN200910068902A CN101565138B CN 101565138 B CN101565138 B CN 101565138B CN 200910068902 CN200910068902 CN 200910068902 CN 200910068902 A CN200910068902 A CN 200910068902A CN 101565138 B CN101565138 B CN 101565138B
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Abstract
The invention discloses a discrete self-charging elevator energy feedback device, wherein a diode triphase uncontrollable rectification module (1) is respectively connected with a triphase electric network (100) and a self-charging circuit (2) which is connected with a voltage stabilizing filter capacitor (4), the voltage stabilizing filter capacitor (4) is respectively connected with an energy consuming brake unit (3), an inverter module (5) and an isolating diode (6) that is connected with an energy feedback unit (7) in series, and the energy feedback unit (7) is sequentially connected with a higher harmonic filter (8) and the triphase electric network (100). The discrete self-charging elevator energy feedback device disclosed in the invention can realize effective use of the reclaimed energy of the elevator, enhance the safety of the elevator in operation and prolong the service life of the elevator, is low in manufacture cost and suitable for large-scale promotion and application and has momentous production practice significance.
Description
Technical field
The present invention relates to the elevator technology field, particularly relate to a kind of discrete self-charging elevator energy feedback device.
Background technology
Current, for architectural electricity, energy consumption mainly concentrates in the systems such as air-conditioning, elevator, illumination, blower fan, and wherein elevator is one of main energy consumption, and the energy consumption overwhelming majority of elevator concentrates in the Electric Traction (being towing machine).If adopt the elevator energy-saving technology, then help to alleviate the power tense situation, along with elevator quantity increase year after year, the elevator energy-saving potentiality also can further increase, and therefore visible elevator energy-saving has important social effect and considerable economic benefit.
Along with the development of ac speed control technology, based on the lift product of vector control frequency control technology, become main flow in the market.But most lift product adopt the wide modulation of simple venation (PWM) to control, namely adopt the uncontrollable rectification of diode, through the filtering voltage regulation of intermediate capacitance, drive towing machine by the variable alternating current of PWM control inverter output voltage frequency at last, thus the operation of control elevator.There is following shortcoming in this speed governing system: power factor is low, side harmonics is seriously polluted, can't realize the regeneration of energy.
Have maximum mechanical kinetic energy when elevator starts after operation reaches highest running speed, elevator achieves the goal and will progressively slow down before the layer until the elevator stop motion, and towing machine is in the dynamic brake state in this process, the release mechanical kinetic energy.In addition, elevator or a potential energy loading high, in order evenly to drag load, elevator load is comprised of passenger car and counterbalancing piece, only has when the car load carrying ability is about 50%, and the car counterweight balance block just is in the basic state of equilibrium of both sides' quality, otherwise, when moving up and down, electrical motor just is in the dynamic brake state, discharges mechanical potential energy when towing machine non-equilibrium (being that car and counterbalancing piece have of poor quality).The mechanical energy of elevator release in service (comprising potential energy and kinetic energy) becomes direct current (DC) to be stored on the electric capacity in the DC loop by towing machine with inverter converts, produce the pump up voltage, thereby have influence on the normal operation of frequency converter, and then elevator can't normally be moved.
How to process the key that elevator regenerated energy is elevator energy-saving, dual mode is arranged usually: (1) is dissipated to regenerated energy in the braking resistor in parallel with dc capacitor of artificial setting in the DC loop, is called the resistance braking mode.(2) adopt the active inversion technology, with the regenerated energy inversion be and the synchronous alternating current of electrical network same frequency, feed back to electrical network, be called the regenerative braking mode.
In order to solve elevator regenerated energy problem, Siemens has been released the voltage-type ac-dc-ac frequency converter of motor four quadrant running; Japanese fuji company has also successfully developed the power supply regenerative device.But their ubiquitous problems are these, and external device is expensive, and some products are very high to the electrical network requirement, are not suitable for China's national situation.
The most domestic alternative-frequency speed-regulation elevator is the regenerated energy that adopts the resistance braking mode to process elevator, because the resistance braking mode adopts braking resistor to consume regenerated energy, so not only can reduce the efficient of system, also can cause the rising of ambient temperature, this will have a strong impact on the reliability service of apparatus for controlling elevator, shortens the service life of elevator.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of discrete self-charging elevator energy feedback device, this device can be realized the effective utilization to elevator regenerated energy, improve the elevator Operation safety, and the service life of prolongation elevator, and cheap, be fit to apply on a large scale, be of great practical significance.
For this reason, the invention provides a kind of discrete self-charging elevator energy feedback device, wherein, the uncontrollable rectification module 1 of diode three-phase connects respectively three phase network 100, self-charging circuit 2, described self-charging circuit 2 connects filtering capacitance of voltage regulation 4, described filtering capacitance of voltage regulation 4 connects respectively dynamic braking unit 3, inverter module 5, isolation diode 6, and described isolation diode 6 is connected with energy feedback unit 7, and described energy feedback unit 7 connects high-order harmonic filtering device 8, three phase network 100 successively.
Preferably, the trigger voltage of described energy feedback unit 7 is less than the trigger voltage of dynamic braking unit 3.
Preferably, described self-charging circuit 2 is composed in parallel by current-limiting resistance R1 and contactless switch K, and described dynamic braking unit 3 is composed in series by energy consumption resistance R2 and insulated gate bipolar transistor IGBT.
Preferably, it is in parallel with filtering capacitance of voltage regulation 4 after the input end of described energy feedback unit 7 is connected with D1, the D2 of isolation diode 6.
Preferably, also include control driving circuit 200, be used for 2 work of control self-charging circuit, and according to the size of filtering capacitance of voltage regulation 4 both end voltage, control respectively dynamic braking unit 3, inverter module 5 and energy feedback unit 7 work.
Preferably, described control driving circuit 200 includes voltage sensor 201, voltage modulate circuit 202, digital signal processor 203, relay 204, the first driving isolation circuit 205 and the second driving isolation circuit 206, wherein,
Voltage sensor 201 is used for the both end voltage analog signal of Real-time Collection filtering capacitance of voltage regulation 4 and the A phase voltage analog signal of three phase network 100;
Voltage modulate circuit 202 is used for the voltage analog signal that voltage sensor 201 is exported is transformed in the voltage range that digital signal processor 203 analogue to digital conversion ADC modules allow, and exports to digital signal processor 203;
Digital signal processor 203, the charging duration that is used for control self-charging circuit 2, and the both end voltage signal of Real-time Collection filtering capacitance of voltage regulation 4, according to the both end voltage size of filtering capacitance of voltage regulation 4, control respectively dynamic braking unit 3, inverter module 5, energy feedback unit 7 operations.
Preferably, described digital signal processor 203 sends six road pulse-width modulation PWM signals by task manager EVA module wherein and comes 5 work of control inverter module to the first driving isolation circuit 205 when the both end voltage of filtering capacitance of voltage regulation 4 is stablized.
Preferably, described digital signal processor 203, sends six road pulse-width modulation PWM signals by task manager EVB module wherein and controls energy feedback unit 7 work to the second driving isolation circuit 206 during greater than the trigger voltage of energy feedback unit 7 and less than the trigger voltage of dynamic braking unit 3 at filtering capacitance of voltage regulation 4 both end voltage signals.
Preferably, described digital signal processor 203 is at filtering capacitance of voltage regulation 4 both end voltage signals during greater than the trigger voltage of dynamic braking unit 3, an I/O I/O module port output high level signal is set, control insulated gate bipolar transistor IGBT conducting in the dynamic braking unit 3 through the first driving isolation circuit 205, and then 3 work of control dynamic braking unit.
By above technical scheme provided by the invention as seen, a kind of discrete self-charging elevator energy feedback device provided by the invention, this device can be realized the effective utilization to elevator regenerated energy, improve the elevator Operation safety, and the service life of prolongation elevator, and cheap, be fit to apply on a large scale, be of great practical significance.
The present invention compared with prior art also has following effective effect:
1, the present invention has adopted the pulse-width modulation PWM master mode, has overcome the defectives such as traditional resistance braking mode efficient is low, energy consumption large, the raising of restriction deceleration and stopping performance;
2, the present invention adopts self-charging circuit to replace traditional pre-charging device, has greatly improved reliability and the intelligent degree of system;
3, the present invention guarantees to realize the forward flow of energy owing to adopt isolation diode that energy feedback unit and elevator frequency converter are isolated, thereby guarantees the reliable operation of energy back feed device;
4, in a single day fault has appearred in discrete self-charging elevator energy feedback device provided by the invention, can't affect the normal operation of original elevator, has therefore improved the elevator device safety in operation.
Description of drawings
Fig. 1 is the block diagram of discrete self-charging elevator energy feedback device provided by the invention;
Fig. 2 is the physical circuit scheme drawing of discrete self-charging elevator energy feedback device provided by the invention;
Fig. 3 is the control principle drawing of discrete self-charging elevator energy feedback device provided by the invention.
The specific embodiment
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is the block diagram of discrete self-charging elevator energy feedback device provided by the invention.
Referring to Fig. 1, the invention provides a kind of discrete self-charging elevator energy feedback device, this device comprises: the uncontrollable rectification module 1 of diode three-phase, self-charging circuit 2, dynamic braking unit 3, filtering capacitance of voltage regulation 4, the inverter module 5, isolation diode 6, energy feedback unit 7, the high-order harmonic filtering device 8 that are made of igbt (IGBT).
Wherein, the uncontrollable rectification module 1 of diode three-phase connects respectively three phase network (R, S, T) 100, self-charging circuit 2, described self-charging circuit 2 connects filtering capacitance of voltage regulation 4, described filtering capacitance of voltage regulation 4 connects respectively dynamic braking unit 3, inverter module 5, isolation diode 6, described isolation diode 6 is connected with energy feedback unit 7, and described energy feedback unit 7 connects high-order harmonic filtering device 8, three phase network (R, S, T) 100 successively.
Wherein, referring to Fig. 2, described self-charging circuit 2 is composed in parallel by current-limiting resistance R1 and contactless switch K, and described dynamic braking unit 3 is composed in series by energy consumption resistance R2 and insulated gate bipolar transistor IGBT.
In the present invention, three phase network (R, S, T) the uncontrollable rectification module 1 of 100 process diode three-phases carries out rectification, by 2 pairs of filtering capacitance of voltage regulation 4 self-chargings of self-charging circuit, filtering capacitance of voltage regulation 4 and dynamic braking unit 3, inverter module 5 parallel connections, by the adjustable alternating current (U of inverter module 5 output voltage frequency, V, W) drive the towing machine of elevator, the D1 of the input end of energy feedback unit 7 and isolation diode 6, in parallel with filtering capacitance of voltage regulation 4 after the D2 series connection, after 8 filtering of high-order harmonic filtering device with three phase network (R, S, T) 100 link to each other, with Way of Regenerating Energy Feedback to three phase network (R, S, T) 100.
In the present invention, also include control driving circuit 200 in this energy back feed device, be used for 2 work of control self-charging circuit, and according to the size of filtering capacitance of voltage regulation 4 both end voltage Udc, control respectively dynamic braking unit 3, inverter module 5 and energy feedback unit 7 work.
The below describes the specific works process of whole energy back feed device of the present invention:
The alternating current of three phase network (R, S, T) 100 outputs carries out self-charging through uncontrollable diode rectification module 1 rectification by 2 pairs of filtering capacitance of voltage regulation of self-charging circuit 4.When filtering capacitance of voltage regulation 4 was carried out self-charging, the contactless switch K in the self-charging circuit 2 was off-state, and at this moment 1 pair of charging current of resistance R plays metering function in the self-charging circuit 2, thereby can prevent from damaging because charging current is excessive electric capacity; After self-charging finishes, come control contactor K auto-closing by control driving circuit 200, at this moment current-limiting resistance R1 is so far finished the self-charging to filtering capacitance of voltage regulation 4 by short circuit.
When towing machine promotes car or accelerates, towing machine is in motoring condition, the power supply of inverter module 5 is provided by filtering capacitance of voltage regulation 4, inverter module 5 carries out inversion with filtering capacitance of voltage regulation 4 both end voltage, and formation voltage, the three plase alternating current (U, V, W) that frequency is adjustable drive elevator traction machine.
On the specific implementation, in the present invention, when elevator traction machine was in motoring condition, control driving circuit 200 can send six tunnel pulse PWM (pulse duration modulation) signals by task manager EVA module wherein and come 5 work of control inverter module.
And when cage descending or deceleration, elevator traction machine is in the dynamic brake state, at this moment flywheel diode carries out uncontrollable rectification to car potential energy or this part regenerated energy of towing machine kinetic energy in the inverter module 5, conversion becomes direct current (DC), because the unidirectional general character of the uncontrollable rectification module 1 of diode three-phase, the direct current (DC) of generation that regenerated energy is changed can only be to DC voltage-stabilizing filter capacitor 4 chargings of centre, regenerated energy is stored in the filtering capacitance of voltage regulation 4, causes filtering capacitance of voltage regulation 4 both end voltage Udc to rise.
In the present invention, in view of D1 in the input end of energy feedback unit 7 and the isolation diode 6, in parallel with filtering capacitance of voltage regulation 4 after the D2 series connection, preset in the present invention the trigger voltage of energy feedback unit 7 less than the trigger voltage of dynamic braking unit 3, like this so that as long as energy feedback unit 7 failsafes, when towing machine is in the dynamic brake state, when the voltage U dc at filtering capacitance of voltage regulation 4 two ends surpasses energy feedback unit 7 trigger voltage, energy feedback unit 7 is just started working, the D1 of the isolation diode 6 of series connection, the unidirectional general character of D2 can guarantee that the regenerated energy of storing on the filtering capacitance of voltage regulation 4 can only be by filtering capacitance of voltage regulation 4 side direction three phase network (R, S, T) 100 directions flow, thereby can in time be with frequency alternating current in the same way efficiently with the regenerated energy inversion that stores on the filtering capacitance of voltage regulation 4 with three phase network 100, feed back to three phase network 100 end (R, S, T), and process high-order harmonic filtering device 8 carries out filtering, avoided feedback energy that three phase network 100 ends are produced harmonic pollution, at this moment the voltage at filtering capacitance of voltage regulation 4 two ends is owing to the output regenerated energy descends.
Need to prove, in the present invention, as previously mentioned, the present invention sets in advance the trigger voltage of dynamic braking unit 3 greater than the trigger voltage of energy feedback unit 7, if energy feedback unit 7 et out of orders, because this moment, filtering capacitance of voltage regulation 4 can't be exported regenerated energy to energy feedback unit 7, energy feedback unit 7 also can't feed back to three phase network 100 ends to the regenerated energy that stores on the filtering capacitance of voltage regulation 4 again, voltage on the filtering capacitance of voltage regulation 4 constantly rises so, when reaching the trigger voltage of dynamic braking unit 3, dynamic braking unit 3 is started working, thereby the regenerated energy that stores on the filtering capacitance of voltage regulation 4 can be consumed by the energy consumption resistance R2 in the dynamic braking unit 3, so the present invention can avoid being damaged because of the overtension at its two ends for the filtering capacitance of voltage regulation 4 of storing, regenerating energy.
On the specific implementation, in the present invention, when elevator traction machine was in the dynamic brake state, control driving circuit 200 can be controlled insulated gate bipolar transistor IGBT conducting in the dynamic braking unit 3 to the first driving isolation circuit 205 by I/O I/O module port output high level signal is set.
Fig. 3 is the control principle drawing of discrete self-charging elevator energy feedback device provided by the invention.
Referring to Fig. 3, for control driving circuit 200 provided by the invention, be used for 2 work of control self-charging circuit, and according to the size of the both end voltage Udc of filtering capacitance of voltage regulation 4, control respectively dynamic braking unit 3, inverter module 5 and energy feedback unit 7 work.
Above-mentioned control driving circuit 200 includes: voltage sensor 201, voltage modulate circuit 202, digital signal processor DSP 203, relay 204, the first driving isolation circuit 205 and the second driving isolation circuit 206;
Wherein, voltage sensor 201 is used for the both end voltage Udc analog signal of Real-time Collection filtering capacitance of voltage regulation 4, the A phase voltage Ua analog signal of three phase network 100;
Voltage modulate circuit 202 is used for the voltage analog signal that voltage sensor 201 gathers is transformed in the voltage range that digital signal processor 203 analogue to digital conversion ADC modules allow, and exports to digital signal processor DSP 203;
In the present invention, described relay 204 is connected with digital signal processor DSP 203, self-charging circuit 2 respectively, described the first driving isolation circuit 205 links to each other with digital signal processor DSP 203, dynamic braking unit 3, inverter module 5 respectively, and described the second driving isolation circuit 206 is connected with digital signal processor DSP 203, energy feedback unit 7 respectively.
Digital signal processor DSP 203, be connected with voltage modulate circuit 202, relay 204, the first driving isolation circuit 205 and the second driving isolation circuit 206 respectively, the charging duration that is used for control self-charging circuit 2, and Real-time Collection filtering capacitance of voltage regulation 4 both end voltage Udc signals, according to the size of the both end voltage Udc of filtering capacitance of voltage regulation 4, control respectively dynamic braking unit 3, inverter module 5, energy feedback unit 7 work.
The control process of digital signal processor DSP 203 is specially:
1, when filtering capacitance of voltage regulation 4 both end voltage signal Udc size is stablized, sends six road PWM (pulse duration modulation) signal by task manager EVA module wherein and come 5 work of control inverter module through the first driving isolation circuit 205; At this moment inverter module 5 drives towing machine with the three plase alternating current (U, V, W) that filtering capacitance of voltage regulation 4 both end voltage inversions are voltage, frequency is adjustable;
2,, send six tunnel pulse PWM (pulse duration modulation) signals by the task manager EVB module in the digital signal processor DSP 203 and control energy feedback unit 7 work through the second driving isolation circuit 206 during greater than the trigger voltage of energy feedback unit 7 and less than the trigger voltage of dynamic braking unit 3 at filtering capacitance of voltage regulation 4 both end voltage signal Udc; At this moment can in time with the regenerated energy inversion of storing on the filtering capacitance of voltage regulation 4 be efficiently and three phase network 100 same frequencies alternating current in the same way, feed back to three phase network 100 ends (R, S, T).
3, at filtering capacitance of voltage regulation 4 both end voltage signal Udc during greater than the trigger voltage of dynamic braking unit 3, I/O I/O module port output high level signal is set controls insulated gate bipolar transistor IGBT conducting in the dynamic braking unit 3 through driving isolation circuit 205, and then control dynamic braking unit 3 brings into operation.At this moment on the energy consumption resistance R2 of regenerated energy consumption in dynamic braking unit 3, realize the resistance braking of regenerated energy.
Need to prove that when energy feedback unit 7 et out of order, the both end voltage signal Udc of filtering capacitance of voltage regulation 4 can rise to the trigger voltage greater than dynamic braking unit 3.
Digital signal processor DSP 203 is used for the charging duration of control self-charging circuit 2, when the set self-charging time then, the contactless switch K in the control self-charging circuit 2 is closed.On the specific implementation, a timer with digital signal processor DSP 203 is set the self-charging time, when the time then, show that filtering capacitance of voltage regulation 4 self-chargings finish, an I/O I/O module port output low level signal is set, open contact by this signal control relay 204 is closed, and then the contactless switch K closure in control and the self-charging circuit 2 that relay 204 is connected, finishes the self-charging to filtering capacitance of voltage regulation 4.
In the present invention, described digital signal processor DSP 203 is preferably DSP 2812 chips.
Below in conjunction with specific embodiment technical scheme of the present invention is described.
On the implementation, digital signal processor DSP 203 Real-time Collection three phase networks, 100 side A phase voltage Ua and filtering capacitance of voltage regulation 4 both end voltage Udc, it is Udc=2.34Ua that the input voltage of the uncontrollable rectification module 1 of diode three-phase and output voltage close, wherein Ua is three phase network (R, S, T) A phase voltage effective value, the present invention sets the threshold voltage Uband of a Udc here, when satisfying 2.34Ua-Uband≤Udc＜2.34Ua+Uband, regulation filtering capacitance of voltage regulation 4 both end voltage are stable, voltage fluctuation is little, at this moment towing machine is in motoring condition, DSP task manager EVA module is exported six road pwm signals, and control inverter module 5 is three plase alternating current (U with electric capacity 4 both end voltage Udc inversions behind the first driving isolation circuit 205, V, W) drive towing machine.
And when towing machine is in the dynamic brake state, flywheel diode in the inverter module 5 is realized uncontrollable rectification to this part regenerated energy, become direct current (DC), because the unidirectional general character of uncontrollable diode rectification module 1, regenerated energy can only charge to the filtering capacitance of voltage regulation 4 of intermediate dc, it is very fast to cause capacitance voltage Udc to rise, at this moment Udc＞2.34Udc+Uband.So it is 2.34Ua+Uband that the present invention arranges the trigger voltage of energy feedback unit 7, namely when Udc＞2.34Udc+Uband, DSP task manager EVB module is exported six road pwm signals, control energy feedback unit 7 work behind the second driving isolation circuit 206, in time with the regenerated energy inversion that stores on the electric capacity 4 be efficiently and three phase network 100 together frequency alternating current in the same way, feed back to three phase network 100 ends (R, S, T).
As previously mentioned, the present invention arranges dynamic braking unit 3 trigger voltage values and is higher than energy feedback unit 7 trigger voltage values (being 2.34Ua+Uband), guaranteed like this as long as energy feedback unit 7 failsafes, when the towing machine dynamic brake, when filtering capacitance of voltage regulation 4 both end voltage surpass the trigger voltage 2.34Ua+Uband of energy feedback unit 7, just work of energy feedback unit 7, at this moment dynamic braking unit 3 is not worked because not reaching its trigger voltage value.In case and fault has appearred in energy feedback unit 7, energy feedback unit 7 can't feed back to three phase network 100 ends to the regenerated energy that stores on the filtering capacitance of voltage regulation 4 more so, voltage on the filtering capacitance of voltage regulation 4 constantly rises so, behind the trigger voltage that rises to dynamic braking unit 3, a digital IO I/O port output high level signal of task manager EVA module in the digital signal processor DSP 203 is set, this signal is controlled the IGBT conducting in the dynamic braking unit 3 after driving the first buffer circuit 205, thereby regenerated energy consumption on the resistance R 2 of dynamic braking unit 3, has been avoided damaging because capacitance voltage is too high the phenomenon of electric capacity.As seen, discrete self-charging elevator energy feedback device of the present invention does not affect original elevator and normally moves, and has improved the system works reliability.By real-time detection three phase network side A phase voltage Ua, avoided in the conventional voltage method of inspection because only detecting that Udc causes because the problem of the energy feedback unit misoperation that the Ua fluctuation causes the safety that has improved equipment.
In sum, a kind of discrete self-charging elevator energy feedback device provided by the invention, this device can be realized the effective utilization to elevator regenerated energy, improve the elevator Operation safety, and the service life of prolongation elevator, and cheap, be fit to apply on a large scale, be of great practical significance.
The present invention compared with prior art also has following effective effect:
1, the present invention has adopted the pulse-width modulation PWM master mode, has overcome the defectives such as traditional resistance braking mode efficient is low, energy consumption large, the raising of restriction deceleration and stopping performance;
2, the present invention adopts self-charging circuit to replace traditional pre-charging device, has greatly improved reliability and the intelligent degree of system;
3, the present invention guarantees to realize the forward flow of energy owing to adopt isolation diode that energy feedback unit and elevator frequency converter are isolated, thereby guarantees the reliable operation of energy back feed device;
4, in a single day fault has appearred in discrete self-charging elevator energy feedback device provided by the invention, can't affect the normal operation of original elevator, has therefore improved the elevator device safety in operation.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. discrete self-charging elevator energy feedback device, the concrete structure that it is characterized in that described discrete self-charging elevator energy feedback device is, the uncontrollable rectification module of diode three-phase (1) connects respectively three phase network (100) and self-charging circuit (2), described self-charging circuit (2) connects filtering capacitance of voltage regulation (4), described filtering capacitance of voltage regulation (4) connects respectively dynamic braking unit (3), inverter module (5) and isolation diode (6), described isolation diode (6) is connected with energy feedback unit (7) simultaneously, described energy feedback unit (7) connects high-order harmonic filtering device (8), and high-order harmonic filtering device (8) connects three phase network (100).
2. energy back feed device as claimed in claim 1 is characterized in that, the trigger voltage of described energy feedback unit (7) is less than the trigger voltage of dynamic braking unit (3).
3. energy back feed device as claimed in claim 1, it is characterized in that, described self-charging circuit (2) is composed in parallel by current-limiting resistance R1 and contactless switch K, and described dynamic braking unit (3) is composed in series by energy consumption resistance R2 and insulated gate bipolar transistor IGBT.
4. energy back feed device as claimed in claim 1 is characterized in that, and is in parallel with filtering capacitance of voltage regulation (4) after the input end of energy feedback unit (7) is connected with isolation diode (6).
5. such as each described energy back feed device in the claim 1 to 4, it is characterized in that, also include control driving circuit (200), be used for control self-charging circuit (2) work, and according to the size of filtering capacitance of voltage regulation (4) both end voltage, control respectively dynamic braking unit (3), inverter module (5) and energy feedback unit (7) work.
6. energy back feed device as claimed in claim 5, it is characterized in that, described control driving circuit (200) includes voltage sensor (201), voltage modulate circuit (202), digital signal processor (203), relay (204), the first driving isolation circuit (205) and the second driving isolation circuit (206), wherein
Voltage sensor (201) is used for the both end voltage analog signal of Real-time Collection filtering capacitance of voltage regulation (4) and the A phase voltage analog signal of three phase network (100);
Voltage modulate circuit (202), be used for the voltage analog signal that voltage sensor (201) is exported is transformed in the voltage range that digital signal processor (203) analogue to digital conversion ADC module allows, and export to digital signal processor (203);
Digital signal processor (203), the charging duration that is used for control self-charging circuit (2), and the both end voltage signal of Real-time Collection filtering capacitance of voltage regulation (4), according to the both end voltage size of filtering capacitance of voltage regulation (4), control respectively dynamic braking unit (3), inverter module (5), energy feedback unit (7) work.
7. energy back feed device as claimed in claim 6, it is characterized in that, when described digital signal processor (203) is stablized in the both end voltage of filtering capacitance of voltage regulation (4), send six road pulse-width modulation PWM signals by task manager EVA module wherein and come control inverter module (5) work to the first driving isolation circuit (205).
8. energy back feed device as claimed in claim 6, it is characterized in that, described digital signal processor (203), sends six road pulse-width modulation PWM signals by task manager EVB module wherein and controls energy feedback unit (7) work to the second driving isolation circuit (206) during greater than the trigger voltage of energy feedback unit (7) and less than the trigger voltage of dynamic braking unit (3) at filtering capacitance of voltage regulation (4) both end voltage signal.
9. energy back feed device as claimed in claim 6, it is characterized in that, described digital signal processor (203) is at filtering capacitance of voltage regulation (4) both end voltage signal during greater than the trigger voltage of dynamic braking unit (3), an I/O I/O module port output high level signal is set, control insulated gate bipolar transistor IGBT conducting in the dynamic braking unit (3) by the first driving isolation circuit (205), control dynamic braking unit (3) work.
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| CN101807821B (en) * | 2010-03-05 | 2012-04-25 | 南京理工大学 | Energy saving system of elevator |
| CN101860316B (en) * | 2010-05-26 | 2012-04-25 | 天津市华萌科技有限公司 | Self-adaptive load following control technical system |
| CN103595288A (en) * | 2013-10-30 | 2014-02-19 | 江苏绿扬电子仪器集团有限公司 | Three-phase inverter allowing energy to flow bidirectionally |
| CN103944184A (en) * | 2014-04-11 | 2014-07-23 | 天津鑫宝龙电梯集团有限公司 | LC filter elevator energy feedback device |
| CN104386550A (en) * | 2014-09-16 | 2015-03-04 | 苏州菱怡电梯有限公司 | Energy feedback device for elevator |
| CN109383304A (en) * | 2017-08-04 | 2019-02-26 | 湖南中车时代电动汽车股份有限公司 | A kind of electric drive circuit and vehicle of vehicle |
| CN114024343A (en) * | 2021-10-27 | 2022-02-08 | 浙江华章科技有限公司 | Rectification feedback system and method based on IGBT |
| CN114256881A (en) * | 2021-12-10 | 2022-03-29 | 三一重机有限公司 | Energy processing system, method and working machine |
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| CN201201829Y (en) * | 2008-04-24 | 2009-03-04 | 上海爱登堡电梯有限公司 | Energy resource feedback system for elevator |
-
2009
- 2009-05-18 CN CN 200910068902 patent/CN101565138B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106646A (en) * | 1984-10-05 | 1986-03-10 | 三菱电机株式会社 | The control setup of companion ladder |
| JP2000255918A (en) * | 1999-03-04 | 2000-09-19 | Mitsubishi Electric Corp | Elevator device and elevator system |
| JP2003312952A (en) * | 2002-04-24 | 2003-11-06 | Mitsubishi Electric Corp | Control device for elevator |
| JP2005006476A (en) * | 2003-06-16 | 2005-01-06 | Hitachi Ltd | Motor drive system |
| CN201201829Y (en) * | 2008-04-24 | 2009-03-04 | 上海爱登堡电梯有限公司 | Energy resource feedback system for elevator |
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| CN101565138A (en) | 2009-10-28 |
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