CN213679319U - Elevator emergency rescue control circuit - Google Patents
Elevator emergency rescue control circuit Download PDFInfo
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- CN213679319U CN213679319U CN202022425647.2U CN202022425647U CN213679319U CN 213679319 U CN213679319 U CN 213679319U CN 202022425647 U CN202022425647 U CN 202022425647U CN 213679319 U CN213679319 U CN 213679319U
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Abstract
The embodiment of the utility model provides an elevator emergency rescue control circuit, this elevator emergency rescue control circuit includes: automatic rescue device, elevator driver input circuit and switching circuit, automatic rescue device includes: the battery module, the booster circuit and the inverter circuit are connected in sequence, a bus between the booster circuit and the inverter circuit is a first bus, and a first bus capacitor is arranged on the first bus; the elevator drive input circuit includes: the bus between the rectification circuit and the three-phase inverter circuit is a second bus, and a second bus capacitor is arranged on the second bus; the inverter circuit is connected with the rectifying circuit; the first bus bar and the second bus bar are connected through the switch circuit. Through the embodiment of the utility model provides a, both guaranteed that whole rescue system normally works, also prolonged battery module's live time effectively.
Description
Technical Field
The utility model relates to a motor control technical field especially relates to an elevator emergency rescue control circuit.
Background
Along with the popularization of the use of the elevator, people pay more and more attention to the safe use of the elevator. Although power grid systems are now highly developed, power outages occur occasionally in some cities. When the elevator runs, the power grid is suddenly powered off to cause the elevator to be incapable of running normally, and at the moment, an Automatic Rescue Device (ARD) is required to be configured for providing a temporary power supply to rescue people on the flat floor, so that the situation that people taking the elevator are trapped is avoided. The ARD rescue device has the main function of converting direct current of a battery into alternating current to be supplied to a control system, and mainly provides illumination for an elevator driver, a door machine driver, a car, internal and external calling display and the like.
Conventional ARD rescue devices suffer from battery capacity, as well as load conditions in the elevator, resulting in limited operating time and distance available for travel.
SUMMERY OF THE UTILITY MODEL
The utility model provides an aim at provides an elevator emergency rescue control circuit to solve traditional ARD rescue device and receive battery capacity, and the influence of the load condition in the elevator, result in operating duration and the limited problem of working distance.
In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:
in a first aspect, the embodiment of the utility model provides an elevator emergency rescue control circuit, include:
automatic rescue device, elevator driver input circuit and switching circuit, automatic rescue device includes: the battery module, the booster circuit and the inverter circuit are connected in sequence, a bus between the booster circuit and the inverter circuit is a first bus, and a first bus capacitor is arranged on the first bus; the elevator drive input circuit includes: the bus between the rectification circuit and the three-phase inverter circuit is a second bus, and a second bus capacitor is arranged on the second bus; the inverter circuit is connected with the rectifying circuit; the first bus bar is connected with the second bus bar through the switch circuit; the automatic rescue device also comprises a control circuit which is used for controlling the actions of the automatic rescue device and the switch circuit.
Furthermore, the control circuit adopts a DSP chip.
Further, the switch circuit is a relay.
By the above the embodiment of the utility model provides a technical scheme is visible, the embodiment of the utility model provides a bus-bar through with automatic rescue device and elevator driver input circuit's bus-bar are connected, realize bus control altogether, cooperate the utility model provides an emergency rescue control method to the potential energy of make full use of elevator feedback when the elevator operation reaches the purpose of the live time of the battery module of extension emergency rescue device, realizes long distance rescue operation. In empty, full load situations, the elevator can operate for far longer and longer distances than in conventional solutions. And compare in traditional control mode, the utility model discloses in only increased a relay, control mode is succinct, and product cost is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a first schematic structural diagram of an elevator emergency rescue control circuit provided by an embodiment of the present invention;
fig. 2 is a schematic diagram of a second structure of an elevator emergency rescue control circuit provided by the embodiment of the present invention;
fig. 3 is a first schematic flow chart of an elevator emergency rescue control method provided by the embodiment of the present invention;
fig. 4 is a schematic diagram of a second flow of an elevator emergency rescue control method provided by the embodiment of the present invention;
fig. 5 is a schematic view of a third flow of an elevator emergency rescue control method provided by the embodiment of the present invention;
fig. 6 is a schematic timing diagram for executing the elevator emergency rescue control method according to the embodiment of the present invention.
Detailed Description
The embodiment of the utility model provides an elevator emergency rescue control circuit.
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the embodiment of the utility model provides an elevator emergency rescue control circuit, elevator emergency rescue control circuit specifically can include: automatic rescue apparatus 11, elevator drive input circuit 12 and switch circuit 115, automatic rescue apparatus 11 includes: the battery module 111, the booster circuit 112 and the inverter circuit 113 are connected in sequence, a bus between the booster circuit 112 and the inverter circuit 114 is a first bus 113, and a first bus capacitor is arranged on the first bus 113; the elevator drive input circuit 12 includes: the rectifying circuit 121 and the three-phase inverter circuit 123 are connected, a bus between the rectifying circuit 121 and the three-phase inverter circuit 123 is a second bus 122, and a second bus capacitor is arranged on the second bus 122; the inverter circuit 114 is connected with the rectifying circuit 121; the first bus 113 and the second bus 122 are connected through the switch circuit 115; automatic rescue device 11 further includes a control circuit 116 for controlling the operation of automatic rescue device 11 and switch circuit 116.
When the input power grid of the elevator is powered off, the elevator emergency rescue control circuit starts to supply power to the elevator driver input circuit 12 through the automatic rescue device 11, and the direct current low voltage of the battery module 111 is boosted to be direct current high voltage through the DC/DC boost circuit 112, so that the voltage P1-N1 of the first bus 113 is obtained. The concrete process of stepping up can set up according to actual needs, the embodiment of the utility model provides a only give one of them illustration: the output voltage of the battery module is modulated into high-frequency alternating-current square-wave voltage through the switching tube, and the high-frequency alternating-current square-wave voltage is boosted by the high-frequency transformer and then rectified and converted into direct-current voltage P1-N1 of the first bus 113. Then, the voltage P1-N1 of the first bus 113 is subjected to single-phase inversion through the DC/AC inverter circuit 114, alternating current L1-L2 and AC220V are output to the rectifying circuit 121 of the elevator driver input circuit 12, and the voltage P2-N2 of the second bus 122 is obtained. And the obtained three-phase alternating current is used for providing power for an elevator driver, a door motor and a hoistway lighting lamp through a three-phase inverter circuit 123.
After receiving the power supply of the automatic rescue device 11, the elevator driver opens the band-type brake and runs in the heavy load direction, at this time, the main machine of the elevator driver is in a power generation braking state, the potential energy of the elevator is converted into electric energy, the voltage P2-N2 of the second bus 122 rises, and redundant electric energy in the prior art is consumed through a braking resistor. The embodiment of the utility model provides a through connecting first generating line 113 and second generating line 122, first generating line electric capacity and second generating line electric capacity are parallelly connected promptly, have realized controlling of generating line altogether, are used for the unnecessary electric energy that produces the elevator driver for elevator driver, door machine, well light provide the power, can save battery module 111's electric energy consumption.
The common bus control is specifically to be controlled by a switching circuit 115 provided on the parallel circuit between the first bus 113 and the second bus 122. The switching circuit determines whether to turn on or off the common bus control according to the first bus voltage and the second bus voltage.
As shown in fig. 2, the automatic rescue device 11 further includes a control circuit 116, which is used for monitoring the voltage of the first bus 113, the voltage of the second bus 121 and the output current of the three-phase inverter circuit 123, and controlling the on/off of each circuit module in the automatic rescue device 11 and the switch circuit 115, so as to turn on or off the common bus control.
Furthermore, control circuit 116 can set up according to actual needs, can comprise multiple electronic device including comparison circuit to send electronic signal through the result of monitoring, also can comprise equipment such as singlechip or microprocessor, the embodiment of the utility model provides an only use the DSP chip to exemplify as the example.
Further, the switch circuit 115 is a relay.
When the common bus control is started, the control circuit 116 will instruct to pull in the breaker and turn off the output voltage of the battery module 111; when the common bus control is exited, the control circuit 116 will disconnect the breaker and re-instruct the battery module 111 to supply power.
By the above the embodiment of the utility model provides a technical scheme is visible, the embodiment of the utility model provides a through automatic rescue device, elevator driver input circuit and switch circuit, automatic rescue device includes: the battery module, the booster circuit and the inverter circuit are connected in sequence, a bus between the booster circuit and the inverter circuit is a first bus, and a first bus capacitor is arranged on the first bus; the elevator drive input circuit includes: the bus between the rectification circuit and the three-phase inverter circuit is a second bus, and a second bus capacitor is arranged on the second bus; the inverter circuit is connected with the rectifying circuit; the first bus bar is connected with the second bus bar through the switch circuit; the automatic rescue device also comprises a control circuit which is used for controlling the actions of the automatic rescue device and the switch circuit. Through the embodiment of the utility model provides a, both guaranteed that whole rescue system normally works, also prolonged battery module's live time effectively.
Correspond elevator emergency rescue control circuit that above-mentioned embodiment provided, the embodiment of the utility model provides an elevator emergency rescue control method is still provided, fig. 3 is the utility model provides an elevator emergency rescue control method's flow schematic diagram is based on the elevator emergency rescue control circuit execution elevator emergency rescue control method that fig. 1 to fig. 2 described, as shown in fig. 3, this elevator emergency rescue control method includes:
and step S01, when the power supply to the elevator driver input circuit by the automatic rescue device is determined, outputting voltage by the battery module and keeping the switch circuit disconnected.
It will be appreciated that when the input grid of the elevator drive is normal, the automatic rescue apparatus is in a standby state, the first bus is free of voltage, and the switching circuit on the parallel circuit of the first bus capacitor and the second bus capacitor is in an open state, the drive being directly powered by the preset input grid. When the input power grid of the elevator driver is powered off, the automatic rescue device needs to be switched to a working state, and meanwhile, the input circuit of the elevator driver is switched to the output end of the automatic rescue device. In the first stage, the control circuit controls the output voltage of the battery module, so that the automatic rescue device supplies power to the input circuit of the elevator driver. After the elevator driver is powered on, the internal contracting brake is opened, and the elevator is accelerated to a preset target speed in a heavy load direction. At this time, the switch circuit on the parallel circuit is still in an off state.
Further, the step S01 includes:
step S011, when the power grid is powered off, controlling the battery module to start outputting voltage, and boosting the voltage through the booster circuit to increase the voltage of the first bus;
step S012, when the voltage of the first bus reaches a preset second threshold value, controlling the output voltage of the inverter circuit to supply power for the input circuit of the elevator driver, and the output voltage of the inverter circuit rises;
and S013, the voltage of the second bus rises along with the rise of the output voltage of the inverter circuit until the output voltage of the inverter circuit is stabilized at AC220V, the voltage of the second bus is stabilized, and the elevator starts to run in the heavy load direction to reach the preset target speed.
As shown in fig. 6, when the DC voltage input from the battery module is boosted by the DC/DC boost circuit to a second threshold value, the control circuit starts the inverter circuit to perform single-phase inversion on the voltage of the first bus to output an AC power of L1-L2, for example, AC 220V. The voltage of the second bus gradually rises until after stabilization, for example at 314V, the elevator starts to run.
Further, the second threshold is 370V.
And step S02, when the elevator runs to the target speed, and when the voltage of the second bus and the output current of the three-phase inverter circuit meet a preset first threshold value condition, closing the switch circuit, closing the battery module, and entering a common bus control stage.
In the second stage, after the elevator runs to the target speed, the voltage of the second bus is gradually increased along with the autonomous power generation of the elevator driver, and the control circuit of the automatic rescue device monitors the voltage of the second bus and the output current of the three-phase inverter circuit. And when the voltage of the second bus and the output current of the three-phase inverter circuit meet a preset first threshold value condition, determining that a common bus control condition is met. At the moment, the control circuit instructs the switch circuit on the parallel circuit to be opened, namely the relay is closed, so that the parallel circuit is switched on, and the battery module stops outputting voltage. Thus, the elevator drive is powered by the electrical energy autonomously generated by the elevator through common bus control.
Further, the first threshold condition is: the voltage of the second bus reaches above 370v, the output current of the three-phase inverter circuit exceeds 20% of the rated current of the main machine, and the output current lasts for more than preset time.
Further, as shown in fig. 4, after the step S02, the method further includes:
and step S03, when the elevator decelerates or stops, controlling the battery module to output voltage and disconnecting the switch circuit.
In the third phase, when the control unit of the elevator determines that the elevator is approaching the preset target floor, the elevator will be controlled to decelerate and gradually enter the stopping phase. At this point the elevator drive will not be able to generate sufficient power and the voltage of the first bus and the voltage of the second bus will drop. When the second bus voltage cannot support the power supply for the elevator driver, the control circuit disconnects the switch circuit, so that the common bus control is exited, and the battery module is instructed to restore the output voltage to supply power for the elevator driver input circuit.
Further, as shown in fig. 5, the step S03 includes:
and step S031, when it is detected that the voltage of the second bus bar does not satisfy the first threshold condition, controlling the battery module to output a voltage, and turning off the switch circuit.
In the voltage reduction process of the first bus, when the control circuit monitors that the voltage of the first bus cannot meet a preset first threshold value condition, the battery module is restarted to supply power to the first bus capacitor so as to keep the voltage value of the first bus voltage, and meanwhile, the switch circuit on the parallel circuit is disconnected so as to quit the common bus control.
It should be understood that, in the first stage, when the power is supplied by the battery module, so that the automatic rescue device normally outputs, and the elevator driver is powered, if the elevator is just near the balanced load and cannot run in the heavy load direction, the voltage of the second bus bar will remain substantially unchanged at this time, the first threshold condition cannot be met, and therefore, the common bus bar control cannot be realized.
By the above the embodiment of the utility model provides a technical scheme is visible, the embodiment of the utility model provides a lead to and connect first bus-bar capacitance and second bus-bar capacitance in parallel to it is to switch to total bus control to reach first threshold value condition at second bus-bar voltage, has both guaranteed that whole rescue system normally works, has also prolonged the time of battery single use effectively.
As shown in fig. 6, the timing diagram illustrates:
1. before the power failure of the power grid, the power grid supplies power to the elevator driver, at the moment, a battery module of the automatic rescue device is not started, and the output voltage is 0;
2. after the power failure of a power grid, a control circuit of the automatic rescue device controls a battery module to supply power to an input circuit of an elevator driver, the output voltage of the battery module is boosted through a booster circuit, so that the voltage of a first bus gradually rises, and after the voltage rises to a second threshold value, the inverter circuit starts to output voltage after a time delay for reducing the current impact on the battery module; in the present embodiment, the second threshold is set to 370V in consideration of a certain output margin;
3. the voltage of the second bus rises along with the rise of the output voltage of the inverter circuit, when the output voltage of the inverter circuit is stabilized at AC220V, the voltage of the second bus is stabilized at about 314V, the elevator starts to enter a rescue operation mode, and the elevator operates towards a heavy load direction;
4. when the elevator speed reaches the target speed, the voltage of the second bus is continuously increased, when the voltage of the second bus is increased to 370V and the state lasts for more than 2s, the elevator driver transmits the voltage of the second bus and the output current of the three-phase inverter circuit (namely the output current of the driver) to a control circuit of the automatic rescue device, and after the control circuit acquires the voltage of the second bus and the output current of the three-phase inverter circuit, the relay K is controlled to be closed through comprehensive judgment that the voltage of the second bus and the output current of the three-phase inverter circuit both meet the first threshold condition, and common bus control is carried out.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (3)
1. An elevator emergency rescue control circuit, comprising: automatic rescue device, elevator driver input circuit and switching circuit, automatic rescue device includes: the battery module, the booster circuit and the inverter circuit are connected in sequence, a bus between the booster circuit and the inverter circuit is a first bus, and a first bus capacitor is arranged on the first bus; the elevator drive input circuit includes: the bus between the rectification circuit and the three-phase inverter circuit is a second bus, and a second bus capacitor is arranged on the second bus; the inverter circuit is connected with the rectifying circuit; the first bus bar is connected with the second bus bar through the switch circuit; the automatic rescue device also comprises a control circuit which is used for controlling the actions of the automatic rescue device and the switch circuit.
2. The elevator emergency rescue control circuit of claim 1, wherein the control circuit employs a DSP chip.
3. The elevator emergency rescue control circuit of claim 2, wherein the switching circuit is a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022425647.2U CN213679319U (en) | 2020-10-27 | 2020-10-27 | Elevator emergency rescue control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022425647.2U CN213679319U (en) | 2020-10-27 | 2020-10-27 | Elevator emergency rescue control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN213679319U true CN213679319U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022425647.2U Withdrawn - After Issue CN213679319U (en) | 2020-10-27 | 2020-10-27 | Elevator emergency rescue control circuit |
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| CN (1) | CN213679319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112249827A (en) * | 2020-10-27 | 2021-01-22 | 杭州优迈科技有限公司 | Elevator emergency rescue control circuit and control method |
-
2020
- 2020-10-27 CN CN202022425647.2U patent/CN213679319U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112249827A (en) * | 2020-10-27 | 2021-01-22 | 杭州优迈科技有限公司 | Elevator emergency rescue control circuit and control method |
| CN112249827B (en) * | 2020-10-27 | 2023-08-29 | 杭州优迈科技有限公司 | Elevator emergency rescue control circuit and control method |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210713 Effective date of abandoning: 20230829 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210713 Effective date of abandoning: 20230829 |