CN202363982U - Energy recovery device - Google Patents
Energy recovery device Download PDFInfo
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- CN202363982U CN202363982U CN2011204511544U CN201120451154U CN202363982U CN 202363982 U CN202363982 U CN 202363982U CN 2011204511544 U CN2011204511544 U CN 2011204511544U CN 201120451154 U CN201120451154 U CN 201120451154U CN 202363982 U CN202363982 U CN 202363982U
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Abstract
The utility model discloses an energy recovery device which comprises a frequency converter, a motor, a voltage-reduction charging module, an inversion voltage boosting module, an energy storage module and a logic control loop. The motor is driven by the frequency converter; the voltage-reduction charging module and the inversion voltage boosting module are connected in parallel to the two ends of direct current buses from the periphery of the frequency converter; the energy storage module is simultaneously connected to the voltage-reduction charging module and the inversion voltage boosting module; and the logic control loop is simultaneously connected to the voltage-reduction charging module and the inversion voltage boosting module. Preferably, the device also comprises a first switch and a second switch, wherein the first switch is connected in series with the inversion voltage boosting module to one of the wiring ends of the direct current buses; the second switch is connected in series with the voltage-reduction charging module to one of the wiring ends of the direct current buses; and the first switch and the second switch are respectively connected with the logic control loop.
Description
Technical field
The utility model relates to a kind of energy recycle device, refers to a kind of energy recycle device that is used for the band energy-storage function in elevator field especially.
Background technology
Very general with the elevator driving style of frequency converter driving permanent magnetic synchronous traction machine now.During the elevator heavy service, the frequency converter drive motors rotates, the lot of consumption grid power, and when the elevator light running, the frequency converter drive motors rotates and consumes grid power seldom.During light running, permanent magnetic synchronous traction machine is equivalent to generating state, and the electric energy that traction machine sends is back on the dc bus of frequency converter; Frequency converter does not have the function of storage power, and the electric energy of these recovery not only can not be stored, and also causes the direct current press pump liter of dc bus; Brought certain hidden danger for the normal operation of frequency converter, too high for the direct voltage that does not make dc bus, frequency converter is equipped with discharge resistance usually; When voltage pump is raised to 800V (look concrete frequency converter model and decide); Frequency converter is not connected discharge resistance automatically, the part electric energy is changed into heat energy be discharged in the air, and is breakdown with the power device that guarantees frequency converter, burn.
Electric energy through discharge resistance consumption is not utilized, and this is a kind of great waste, under the energy-conservation overall background of advocating environment protection, should try every possible means waste is reduced.
The utility model content
The technical problem that the utility model will solve provides a kind of energy recycle device, and the electric energy that produces during with the elevator light running reclaims, and when heavy duty or emergency relief, effectively utilize, thereby the electric energy of saves valuable cuts the waste and pollutes in addition again.
In order to achieve the above object; The utility model provides a kind of energy recycle device; The motor that comprises frequency converter and driving thereof, said device also comprise the step-down charging module that is connected in parallel to its dc bus two ends respectively from the frequency converter periphery and inversion boosting module, the loop control logic that is connected to the energy-storage module of said step-down charging module and inversion boosting module and is connected to said step-down charging module and inversion boosting module simultaneously simultaneously.
Loop control logic is used to control said step-down charging module and the inversion boosting module discharges and recharges energy-storage module.
More preferably; Said device also comprise be series at said inversion boosting module to the dc bus terminals wherein an end first switch, be series at said step-down charging module to the dc bus terminals second switch of an end wherein, said first switch links to each other with said loop control logic respectively with second switch.
Loop control logic is used to control the on off state of said first switch and second switch.
Said device also comprises first voltage sensor that is parallel to the dc bus two ends, and said first voltage sensor links to each other with said loop control logic.
First voltage sensor is used to detect the magnitude of voltage at dc bus two ends, and feeds back to loop control logic so that control.
Said device also comprises first current sensor that is series at inversion boosting module other end in the dc bus terminals of said first switch of correspondence, be series at second current sensor of step-down charging module other end in the dc bus terminals of the said second switch of correspondence, and said first current sensor and second current sensor are connected to said loop control logic.
First current sensor and second current sensor are used to detect the current conditions that inversion boosting module and step-down charging module discharge and recharge, and feed back to loop control logic so that control.
Said device also comprises second voltage sensor that is parallel to said energy-storage module, and said second voltage sensor links to each other with said loop control logic.
Second voltage sensor is used to detect the voltage condition at energy-storage module two ends, and feeds back to loop control logic so that control.
Said loop control logic also links to each other with emergency rescue system.
Said first switch and second switch are respectively IGBT (insulated gate bipolar power tube).
Said energy-storage module is an electric capacity.Further, said electric capacity is super capacitor.
The utility model is through a kind of energy recycle device that has energy-storage function, the problem of the recycling of the electric energy that has produced when having solved the motor light running, the environment of having practiced thrift protection of resources; Simultaneously, the electrical power storage that is reclaimed does not directly get into electrical network in energy-storage module, reduced " pollution " to electrical network; In addition, under emergencies such as elevator power failure, can drive the motor rotation of elevator through stored electric energy, thereby make elevator arrive the position of safety.
Description of drawings
Fig. 1 is the sketch map of the utility model energy recycle device one embodiment.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further so that those skilled in the art can better understand the utility model and implementing, but the embodiment that lifts not conduct to the qualification of the utility model.
The utility model provides a kind of energy recycle device; The motor that comprises frequency converter and driving thereof, said device also comprise the step-down charging module that is connected in parallel to its dc bus two ends respectively from the frequency converter periphery and inversion boosting module, the loop control logic that is connected to the energy-storage module of said step-down charging module and inversion boosting module and is connected to said step-down charging module and inversion boosting module simultaneously simultaneously.
Loop control logic is used to control said step-down charging module and the inversion boosting module discharges and recharges energy-storage module; Said step-down charging module is used for HVDC is converted into low-voltage direct, has played the effect of protection energy-storage module; Said inversion boosting module is used for low-voltage direct is converted into HVDC, so that reach the effect that coupling is used, simultaneously; Because the inversion boosting module is to be alternating voltage with the inversion of direct voltage lower in energy-storage module elder generation, directly be converted into required voltage through handing over, handing over again, therefore; In this process; If through appropriate configurations and conversion, but also can export the needed voltage of other device work beyond the power supply machine, can use the power supply of energy-storage module as other devices this moment.
More preferably; Said device also comprise be series at said inversion boosting module to the dc bus terminals wherein an end first switch, be series at said step-down charging module to the dc bus terminals second switch of an end wherein, said first, second switch links to each other with said loop control logic respectively.
Loop control logic is used to control the on off state of said first and second switch.
Said device also comprises first voltage sensor that is parallel to the dc bus two ends, and said first voltage sensor links to each other with said loop control logic.
First voltage sensor is used to detect the magnitude of voltage at dc bus two ends, and feeds back to loop control logic so that control.
Said device also comprises first current sensor that is series at inversion boosting module other end in the dc bus terminals of said first switch of correspondence, be series at second current sensor of step-down charging module other end in the dc bus terminals of the said second switch of correspondence, and said first and second current sensor is connected in said loop control logic.
First and second current sensor is used to detect the current conditions that inversion boosting module and step-down charging module discharge and recharge, and feeds back to loop control logic so that control.
Said device also comprises second voltage sensor that is parallel to said energy-storage module, and said second voltage sensor links to each other with said loop control logic.
Second voltage sensor is used to detect the voltage condition at energy-storage module two ends, and feeds back to loop control logic so that control.
Said loop control logic also links to each other with emergency rescue system.
The signal of the collection of said loop control logic can be control signal, electric current, voltage sensor signals, the emergency management and rescue signal of electric machine control system; Also can be other control signals that can import, control the work of said energy recycle device charging and discharging circuit through these signals.
Said first, second switch is IGBT.
Said energy-storage module is an electric capacity.Further, said electric capacity is super capacitor.
Be illustrated in figure 1 as the sketch map of the utility model energy recycle device one embodiment.Keep the discharge resistance on original frequency converter, make it continue the effect that voltage is clamped down in performance, the protection frequency converter can not burnt.Power frequency input 2 connects three-phase 380V AC power, and the frequency converter drive motors rotates.Step-down charging module, the inversion boosting module dc bus 3 that is connected in parallel from the periphery of frequency converter; First voltage sensor is connected in parallel on the dc bus; First current sensor is connected on the inversion boosting module between the positive terminal (also can be negative pole) of dc bus 3 terminals; Second current sensor is connected on step-down charging module 6 between the positive terminal (also can be negative pole) of dc bus 3 terminals; The one IGBT is connected on the inversion boosting module between the negative pole end (also can be anodal) of dc bus 3 terminals, and the 2nd IGBT is connected on the step-down charging module between the negative pole end (also can be anodal) of dc bus 3 terminals.Energy-storage module is connected to step-down charging module and inversion boosting module respectively, and second voltage sensor is connected in parallel to energy-storage module.The control signal of loop control logic or signals collecting signal are connected with first voltage sensor, first current sensor, second current sensor, an IGBT, the 2nd IGBT, step-down charging module, inversion boosting module, second voltage sensor respectively.Dotted arrow is represented to be connected with the signal of loop control logic.
With a peace river L1000A frequency converter is example, and the quiescent voltage of dc bus is 577V, and heavily loaded voltage is 540V, and the pump up voltage that produces during underloading is ended at 800V by the discharge resistance pincers.
Under the frequency converter silent status, the voltage that first voltage sensor records is 577V, and loop control logic is closed an IGBT, the 2nd IGBT, step-down charging module, inversion boosting module.
In practical application, because the uncertainty of factors such as power grid environment, or the difference of different frequency converter quiescent voltages; Or motor is in normal operating state; We to 560V ~ 650V, think that the voltage that records in this scope all belongs to normally with this expanded range, and the motor operation is normal; Energy-storage module neither need discharge and also need not charge, and an above-mentioned IGBT, the 2nd IGBT, step-down charging module, inversion boosting module are all closed.Certainly, above scope is to think normal voltage range in the present embodiment, and according to the difference of actual conditions, above scope can change to some extent.
When the voltage that records when first voltage sensor surpasses 650V, explain that elevator gets into light running, the electric energy recovery is arranged, loop control logic activates the 2nd IGBT, step-down charging module.Second current sensor is passed to loop control logic with the information of electric current, and current value is little just further opens the 2nd IGBT, and current value is excessive just to be turned down the 2nd IGBT, utilizes the recovery information of second current sensor to realize the current limliting to the 2nd IGBT.The step-down charging module is stored into the electric energy step-down of reclaiming on the dc bus in the energy-storage module.After energy recuperation finished, DC bus-bar voltage was lower than 650V, returns to 577V, and the 2nd IGBT, step-down charging module are closed.Accomplish the work that one time recuperated energy stores thus.Will be original in said process in the power storage that discharges on the discharge resistance in energy-storage module.
When first voltage sensor records voltage and is lower than 560V; Explain that elevator gets into heavy service; Loop control logic activates an IGBT, inversion boosting module; The inversion boosting module with the electric energy in the energy-storage module through inversion, boost, be loaded on the dc bus after the rectification, help the frequency converter drive motors, reduce consumption to outer net electric power.First current sensor is passed to loop control logic with the information of electric current, and current value is little just further opens an IGBT, and current value is excessive just to be turned down an IGBT, utilizes the recovery information of first current sensor to realize the current limliting to an IGBT.When first voltage sensor records voltage and is higher than 560V, close an IGBT and inversion boosting module.Accomplish the work that one time recuperated energy discharges thus.The recovery electric energy that in said process, will store discharges and drives elevator, reduces the consumption to outer net electric power.
(value of different energy-storage modules is different during near the nominal withstand voltage 10V of energy-storage module for the voltage that second voltage sensor records energy-storage module; Here getting certain super capacitor withstand voltage is 10V); Loop control logic is closed the 2nd IGBT and step-down charging module, even when the elevator light running.Only open an IGBT and the inversion boosting module is discharged.When second voltage sensor record the magnitude of voltage of energy-storage module low 7V (required minimum input voltage was 7V when the inversion boosting module was normally boosted in the present embodiment); Deficiency so that the inversion boosting module normally export; Loop control logic is closed an IGBT and inversion boosting module, only opens the 2nd IGBT and the step-down charging module carries out charging work.Only record the principle that energy-storage module is just followed " underloading charging, heavy duty discharge " between 10 ~ 7V the time at second voltage sensor.
Simultaneously, when energy-storage module can not absorb the electric energy of recovery fully, too much electric energy still can form be discharged in the air with interior by discharge resistance, preferentially ensures the safe operation of lift facility.
This system is not because the electric energy that reclaims gets into electrical network, and is minimum to " pollution " of electrical network, because have energy-storage module, not only can play energy-conservation effect, also has the function of emergency management and rescue.When external power grid had a power failure, loop control logic obtained to open an IGBT and inversion boosting module behind the emergency management and rescue signal 1, and the drive elevator is worked, up to elevator till flat bed is emitted trapped personnel nearby.Because be to adopt the work of emergency management and rescue pattern, the speed of elevator can be very low, the breakdown torque of motor can suitably reduce, and like this, DC bus-bar voltage allows to be low to moderate 330V.The voltage of energy-storage module is lower than 7V still can export the torque that is enough to the drive motors slow running, has greatly enlarged the successful possibility of rescue.
What energy-storage module adopted is the super capacitor of thousand farads of levels.Super capacitor (supercapacitor or ultracapacitor), the common capacitor of Capacity Ratio is much bigger, because its capacity is very big, externally performance is identical with battery, so also has and be called " capacitor batteries ".Making energy-storage module with super capacitor has an enormous advantage than battery.Because electric capacity is non-electrochemical energy storage, does not have polarity effect, the memory effect of battery, discharge and recharge number of times and be far longer than battery, and charging and discharging curve is relatively stable; The material of used in battery has heavy metal mostly, and environmental pollution is serious, and cost recovery is high, electric capacity material therefor relative environmental protection many, cost recovery is low.
IGBT (Insulated Gate Bipolar Transistor; The insulated gate bipolar power tube); Voltage drive and the big electric current of Darlington GTR power tube, the low on-resistance characteristic that are collection MOSFET type power tube are the hybrid power device of one, and speed is fast, anti-back-pressure; Low-loss is that the ideal of high-voltage switch gear power component is selected.Form negative feedback with current sensor, the input of this energy recycle device, output are controlled in the normal tolerance range all the time.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and the protection range of the utility model is not limited thereto.Being equal to that the technical staff in present technique field is done on the utility model basis substitutes or conversion, all within the protection range of the utility model.The protection range of the utility model is as the criterion with claims.
Claims (10)
1. energy recycle device; The motor that comprises frequency converter and driving thereof; It is characterized in that said device also comprises the step-down charging module that is connected in parallel to its dc bus two ends respectively from the frequency converter periphery and inversion boosting module, the loop control logic that is connected to the energy-storage module of said step-down charging module and inversion boosting module and is connected to said step-down charging module and inversion boosting module simultaneously simultaneously.
2. device according to claim 1; It is characterized in that; Said device also comprise be series at said inversion boosting module to the dc bus terminals wherein an end first switch, be series at said step-down charging module to the dc bus terminals second switch of an end wherein, said first switch links to each other with said loop control logic respectively with second switch.
3. device according to claim 2 is characterized in that, said device also comprises first voltage sensor that is parallel to the dc bus two ends, and said first voltage sensor links to each other with said loop control logic.
4. device according to claim 2; It is characterized in that; Said device also comprises first current sensor that is series at inversion boosting module other end in the dc bus terminals of said first switch of correspondence, be series at second current sensor of step-down charging module other end in the dc bus terminals of the said second switch of correspondence, and said first current sensor and second current sensor are connected to said loop control logic.
5. device according to claim 3; It is characterized in that; Said device also comprises first current sensor that is series at inversion boosting module other end in the dc bus terminals of said first switch of correspondence, be series at second current sensor of step-down charging module other end in the dc bus terminals of the said second switch of correspondence, and said first current sensor and second current sensor are connected to said loop control logic.
6. according to each described device of claim 1 ~ 5, it is characterized in that said device also comprises second voltage sensor that is parallel to said energy-storage module, said second voltage sensor links to each other with said loop control logic.
7. according to each described device of claim 1 ~ 5, it is characterized in that said loop control logic is connected with emergency rescue system.
8. according to each described device of claim 2 ~ 5, it is characterized in that said first switch and second switch are respectively IGBT.
9. according to each described device of claim 1 ~ 5, it is characterized in that said energy-storage module is an electric capacity.
10. device according to claim 9 is characterized in that, said electric capacity is super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204511544U CN202363982U (en) | 2011-11-15 | 2011-11-15 | Energy recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204511544U CN202363982U (en) | 2011-11-15 | 2011-11-15 | Energy recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN202363982U true CN202363982U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204511544U Expired - Fee Related CN202363982U (en) | 2011-11-15 | 2011-11-15 | Energy recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881852A (en) * | 2021-03-25 | 2021-06-01 | 广东卓梅尼技术股份有限公司 | Elevator variable frequency driver test system |
-
2011
- 2011-11-15 CN CN2011204511544U patent/CN202363982U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881852A (en) * | 2021-03-25 | 2021-06-01 | 广东卓梅尼技术股份有限公司 | Elevator variable frequency driver test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20171115 |