CN116654749A - Common direct current bus escalator control system and control method thereof - Google Patents
Common direct current bus escalator control system and control method thereof Download PDFInfo
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- CN116654749A CN116654749A CN202310545882.9A CN202310545882A CN116654749A CN 116654749 A CN116654749 A CN 116654749A CN 202310545882 A CN202310545882 A CN 202310545882A CN 116654749 A CN116654749 A CN 116654749A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
- B66B25/003—Methods or algorithms therefor
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The invention discloses a common direct current bus escalator control system and a control method thereof. The invention reduces the energy consumption of the escalator, improves the utilization rate of electric energy, and can be widely applied to the technical field of escalator control.
Description
Technical Field
The invention relates to the technical field of escalator control, in particular to a common direct current bus escalator control system and a control method thereof.
Background
As public places have increased demands for escalators, new challenges are also presented to energy consumption requirements of the escalators, so that the design of future escalator systems is gradually advanced to the direction of energy conservation and environmental protection. Generally, the escalator system is in a parallel arrangement mode, for example, places such as a mall, an airport, a subway, a high-speed rail station and the like all use side-by-side escalators, and an upper running direction and a lower running direction are respectively set for passenger conveying. The motor of the escalator is in an electric state in the ascending process, and is in a power generation state in the descending process of heavy load, and the prior art generally uses a brake resistor to consume feedback energy generated in the descending process of the escalator heavy load, so that a large amount of energy is wasted, and the energy consumption of an escalator system is not facilitated to be reduced. Therefore, it is needed to design a control system of the escalator to recycle the energy generated in the descending process of the heavy load of the escalator, so as to reduce the energy consumption of the escalator and improve the utilization rate of electric energy.
Disclosure of Invention
In order to solve the technical problems, the invention aims to: the control system and the control method for the common direct current bus escalator are low in energy consumption and high in electric energy utilization rate.
The first technical scheme adopted by the invention is as follows:
the utility model provides a common direct current busbar staircase control system, includes ascending staircase control subsystem, descending staircase control subsystem and energy storage control subsystem, ascending staircase control subsystem with descending staircase control subsystem sharing first direct current busbar, ascending staircase control subsystem is used for controlling first staircase and acquireing first operating current of first staircase, descending staircase control subsystem is used for controlling the second staircase descends and acquireing the second operating current of second staircase, energy storage control subsystem is used for according to first operating current, second operating current and the busbar voltage control of first direct current busbar ascending staircase control subsystem's electric energy input and descending staircase control subsystem's electric energy input/output.
Further, the escalator control subsystem comprises a first main control board, a first frequency converter, a first contactor and a first motor, wherein the first frequency converter is electrically connected with the first motor through the first contactor, and the first frequency converter and the first contactor are both in signal connection with the first main control board;
the downlink staircase control subsystem comprises a second main control board, a second frequency converter, a second contactor and a second motor, wherein the second frequency converter is electrically connected with the second motor through the second contactor, and the second frequency converter and the second contactor are both in signal connection with the second main control board;
the first frequency converter and the second frequency converter are connected into the first direct current bus through the energy storage control subsystem, and the first main control board and the second main control board are connected with the energy storage control subsystem through signals.
Further, the first frequency converter is used for controlling the running state of the first motor according to the control signal of the first main control board, feeding back the first running current and the bus voltage to the first main control board, the first contactor is used for controlling the on-off between the first frequency converter and the first motor according to the control signal of the first main control board, and the first motor is used for driving the first escalator to ascend;
the second frequency converter is used for controlling the running state of the second motor according to the control signal of the second main control board, feeding back the second running current and the bus voltage to the second main control board, the second contactor is used for controlling the on-off between the second frequency converter and the second motor according to the control signal of the second main control board, and the second motor is used for driving the second escalator to descend and generating electric energy to feed back to the first direct current bus when the second escalator is in heavy-load descending.
Further, the descending escalator control subsystem further comprises a braking resistor, the braking resistor is connected into the first direct current bus through the second frequency converter, and the braking resistor is in signal connection with the second main control board.
Further, the energy storage control subsystem comprises a third contactor, a voltage regulating module, an energy storage device and an energy storage controller, wherein the first frequency converter is electrically connected with the second frequency converter through the third contactor, the energy storage device is electrically connected with the third contactor through the voltage regulating module, the third contactor is used for being connected with the first direct current bus, the first main control board, the second main control board, the third contactor, the voltage regulating module and the energy storage device are all in signal connection with the energy storage controller, and the energy storage controller is used for controlling the electric energy input/output of the energy storage device according to the first running current, the second running current and the bus voltage, controlling the electric energy input of the first motor through the first main control board and controlling the electric energy input/output of the second motor through the second main control board.
Further, the ascending escalator control subsystem further comprises a fuse, the first frequency converter is electrically connected with the third contactor through the fuse, the descending escalator control subsystem further comprises an isolating switch, the second frequency converter is electrically connected with the third contactor through the isolating switch, and the isolating switch is in signal connection with the second main control board.
Further, the energy storage control subsystem further comprises a fourth contactor, the voltage regulating module is electrically connected with the third contactor through the fourth contactor, and the fourth contactor is in signal connection with the energy storage controller.
The second technical scheme adopted by the invention is as follows:
the control method of the common direct current bus escalator control system is used for being executed by the common direct current bus escalator control system and comprises the following steps of:
the method comprises the steps of obtaining a first running current of a first escalator in an uplink through an uplink escalator control subsystem, obtaining a second running current of a second escalator in a downlink through a downlink escalator control subsystem, and obtaining a bus voltage of a shared first direct current bus through an energy storage control subsystem;
when the bus voltage is smaller than a preset first threshold value, controlling the energy storage control subsystem to output electric energy to the ascending escalator control subsystem and the descending escalator control subsystem through the first direct current bus;
when the bus voltage is greater than or equal to the first threshold value and the first running current is greater than or equal to the second running current, controlling the downlink staircase subsystem to output electric energy to the uplink staircase control subsystem;
and when the bus voltage is greater than or equal to the first threshold value and the first running current is smaller than the second running current, controlling the downlink staircase subsystem to output electric energy to the uplink staircase control subsystem and the energy storage control subsystem.
Further, the escalator control subsystem is provided with a brake resistor, and the control method further comprises the following steps:
when the bus voltage is greater than a preset second threshold value, controlling the downlink staircase subsystem to output electric energy to the uplink staircase control subsystem and the energy storage control subsystem, and consuming the residual electric energy through the brake resistor;
wherein the second threshold is greater than the first threshold.
Further, before the step of obtaining the first running current of the first escalator through the escalator control subsystem, obtaining the second running current of the second escalator through the escalator control subsystem, and obtaining the bus voltage of the shared first direct current bus through the energy storage control subsystem, the method further comprises the following steps:
determining whether the first escalator is in a normal state through the ascending escalator subsystem, and determining whether the second escalator is in a normal state through the descending escalator subsystem;
when the first escalator and the second escalator are in a normal state, the energy storage control subsystem is used for switching on a direct current bus loop between the ascending escalator subsystem and the descending escalator subsystem.
The beneficial effects of the invention are as follows: the invention provides a common direct current bus escalator control system and a control method thereof, wherein the common direct current bus escalator control system comprises an ascending escalator control subsystem, a descending escalator control subsystem and an energy storage control subsystem, the ascending escalator control subsystem and the descending escalator control subsystem share a first direct current bus, the ascending escalator control subsystem is used for controlling the ascending of a first escalator and acquiring a first running current of the first escalator, the descending escalator control subsystem is used for controlling the descending of a second escalator and acquiring a second running current of the second escalator, and the energy storage control subsystem is used for controlling electric energy input of the ascending escalator control subsystem and electric energy input/output of the descending escalator control subsystem according to the first running current, the second running current and bus voltage of the first direct current bus. According to the embodiment of the invention, the ascending escalator control subsystem and the descending escalator control subsystem are subjected to direct current bus networking, energy storage and release control are realized through the energy storage control system, and the energy consumption states of the ascending escalator and the descending escalator are judged according to the first running current, the second running current and the bus voltage, so that the electric energy input of the ascending escalator control subsystem and the electric energy input/output of the descending escalator control subsystem can be dynamically regulated, the electric energy generated when the descending escalator control subsystem is subjected to heavy load can be input into the ascending escalator control subsystem for consumption and the energy storage control subsystem for storage, and the energy storage control subsystem can supply electric energy when the ascending escalator control subsystem and the descending escalator control subsystem are in the power consumption state, thereby reducing the energy consumption of the escalator and improving the electric energy utilization rate.
Drawings
Fig. 1 is a schematic structural diagram of a common dc bus escalator control system according to an embodiment of the present invention;
fig. 2 is a flow chart of steps of a control method of a common dc bus escalator control system according to an embodiment of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples. The step numbers in the following embodiments are set for convenience of illustration only, and the order between the steps is not limited in any way, and the execution order of the steps in the embodiments may be adaptively adjusted according to the understanding of those skilled in the art.
In the description of the present invention, the plural means that more than two are used for distinguishing technical features if the first and second are described only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, an embodiment of the present invention provides a common dc bus escalator control system, including an uplink escalator control subsystem, a downlink escalator control subsystem, and an energy storage control subsystem, where the uplink escalator control subsystem and the downlink escalator control subsystem share a first dc bus, the uplink escalator control subsystem is used to control the uplink of a first escalator and obtain a first running current of the first escalator, the downlink escalator control subsystem is used to control the downlink of a second escalator and obtain a second running current of the second escalator, and the energy storage control subsystem is used to control the electric energy input of the uplink escalator control subsystem and the electric energy input/output of the downlink escalator control subsystem according to the first running current, the second running current, and the bus voltage of the first dc bus.
Specifically, the embodiment of the invention carries out direct current bus networking on the ascending escalator control subsystem and the descending escalator control subsystem, realizes energy storage and release control through the energy storage control system, judges the energy consumption states of the ascending escalator and the descending escalator according to the first running current, the second running current and the bus voltage, and can dynamically adjust the electric energy input of the ascending escalator control subsystem and the electric energy input/output of the descending escalator control subsystem, so that the descending escalator control subsystem can input the electric energy generated when the heavy load is descending into the ascending escalator control subsystem for consumption and input into the energy storage control subsystem for storage, and the energy storage control subsystem can supply the electric energy when the ascending escalator control subsystem and the descending escalator control subsystem are in the power consumption state, thereby reducing the energy consumption of the escalator and improving the electric energy utilization rate.
Referring to fig. 1, as a further alternative embodiment, the escalator control subsystem includes a first main control board, a first frequency converter, a first contactor and a first motor, the first frequency converter is electrically connected with the first motor through the first contactor, and the first frequency converter and the first contactor are both in signal connection with the first main control board;
the downlink staircase control subsystem comprises a second main control board, a second frequency converter, a second contactor and a second motor, wherein the second frequency converter is electrically connected with the second motor through the second contactor, and the second frequency converter and the second contactor are both in signal connection with the second main control board;
the first frequency converter and the second frequency converter are connected into the first direct current bus through the energy storage control subsystem, and the first main control board and the second main control board are connected with the energy storage control subsystem through signals.
Specifically, the first main control board/the second main control board receives an external control signal of the escalator for controlling operation of the corresponding escalator, outputs an up/down signal to the first frequency converter/the second frequency converter, is also used for controlling the first contactor/the second contactor to be attracted, and is also used for communicating with the first frequency converter/the second frequency converter to obtain signals such as output current of the frequency converter, bus voltage and the like; in addition, the first main control board and the second main control board are connected in communication, and are connected with the energy storage control subsystem in communication, and the energy storage control subsystem is used for data transmission of current, voltage and the like and transmission of control signals.
Further as an optional implementation manner, the first frequency converter is used for controlling the running state of the first motor according to the control signal of the first main control board, feeding back the first running current and the bus voltage to the first main control board, the first contactor is used for controlling the on-off between the first frequency converter and the first motor according to the control signal of the first main control board, and the first motor is used for driving the first escalator to ascend;
the second frequency converter is used for controlling the running state of the second motor according to the control signal of the second main control board, feeding back second running current and bus voltage to the second main control board, the second contactor is used for controlling on-off between the second frequency converter and the second motor according to the control signal of the second main control board, and the second motor is used for driving the second escalator to descend and generating electric energy to feed back to the first direct current bus when the second escalator is overloaded.
Specifically, the first frequency converter/the second frequency converter receives a control signal of the first main control board/the second main control board, controls the first escalator to ascend/the second escalator to descend, and transmits an output current signal and a bus voltage signal to the first main control board/the second main control board in the operation process; the first contactor/second contactor is used for controlling connection between the first frequency converter/second frequency converter and the corresponding motor, and when the first escalator/second escalator is abnormal, the first main control board/second main control board can cut off the first contactor/second contactor, so that the first escalator/second escalator stops running; the first motor/second motor is used for driving the first escalator to ascend/the second escalator to descend, and when the second escalator is under heavy load, the second motor can generate electric energy and reaches the direct current bus end of the second frequency converter through a motor circuit; the first motor/second motor may be an asynchronous motor or a synchronous motor.
Referring to fig. 1, as a further alternative embodiment, the escalator control subsystem further includes a brake resistor, the brake resistor is connected to the first dc bus through the second frequency converter, and the brake resistor is in signal connection with the second main control board.
Specifically, the braking resistor is used for consuming extra energy generated by the direct current bus loop, and when the excessive electric energy generated by the second motor cannot be completely utilized and consumed by the energy storage control subsystem and the first motor, the braking resistor is controlled to be connected through the second main control board, and the extra electric energy is consumed.
Referring to fig. 1, as a further alternative embodiment, the energy storage control subsystem includes a third contactor, a voltage regulating module, an energy storage device and an energy storage controller, the first frequency converter is electrically connected with the second frequency converter through the third contactor, the energy storage device is electrically connected with the third contactor through the voltage regulating module, the third contactor is used for accessing the first direct current bus, the first main control board, the second main control board, the third contactor, the voltage regulating module and the energy storage device are all in signal connection with the energy storage controller, and the energy storage controller is used for controlling the electric energy input/output of the energy storage device according to the first operation current, the second operation current and the bus voltage, controlling the electric energy input of the first motor through the first main control board, and controlling the electric energy input/output of the second motor through the second main control board.
The third contactor is used for connecting a direct current bus loop between the first frequency converter and the second frequency converter. When the frequency converter is in the power failure stage, if the direct current bus loop has voltage, impact current is generated on the bus capacitor of the frequency converter after the frequency converter is electrified, so that the frequency converter is damaged. The third contactor is controlled by the first main control board and the second main control board through the energy storage controller; when the first escalator and the second escalator are in a normal working state, and the first frequency converter and the second frequency converter are put into operation, the third contactor is sucked in, and the direct current bus loop is connected.
The voltage regulating module is used for increasing the voltage of the energy storage device so as to form a voltage difference with the voltage of the direct current bus to control the flow direction of current in the direct current bus loop; the energy storage device is used for storing/releasing electric energy; the energy storage controller is used for controlling the operation of the energy storage device and the voltage regulating module, and is communicated with the first main control board and the second main control board to control the closing of the third contactor.
Referring to fig. 1, as a further alternative embodiment, the escalator control subsystem further includes a fuse, the first frequency converter is electrically connected with the third contactor through the fuse, the escalator control subsystem further includes an isolating switch, the second frequency converter is electrically connected with the third contactor through the isolating switch, and the isolating switch is in signal connection with the second main control board.
Specifically, the fuse is used for protecting bus connection between the first frequency converter and the second frequency converter, is connected in series between a direct current bus end of the first frequency converter and the third contactor, and is fused when the current of the bus loop is too high, so that the direct current bus loop is disconnected; the isolating switch is connected in series between the direct current bus end of the second frequency converter and the third contactor, and can actively cut off the direct current bus loop under the control of the energy storage controller.
Referring to fig. 1, further alternatively, the energy storage control subsystem further includes a fourth contactor, the voltage regulation module is electrically connected to the third contactor through the fourth contactor, and the fourth contactor is in signal connection with the energy storage controller.
Specifically, the fourth contactor is controlled by the energy storage controller, and when the fourth contactor is in suction, the energy storage device is connected into the direct current bus loop through the voltage regulating module, so that the charge and discharge of the energy storage device can be realized.
The system structure of the embodiment of the present invention is described above, and the working principle and the working flow of the embodiment of the present invention are further described below with reference to the control method.
Referring to fig. 2, an embodiment of the present invention provides a control method of a common dc bus escalator control system, for being executed by the common dc bus escalator control system, including the following steps:
s101, acquiring a first running current of a first escalator in an uplink direction through an uplink escalator control subsystem, acquiring a second running current of a second escalator in a downlink direction through a downlink escalator subsystem, and acquiring a bus voltage of a shared first direct current bus through an energy storage control subsystem;
s102, when the bus voltage is smaller than a preset first threshold value, controlling the energy storage control subsystem to output electric energy to the ascending escalator control subsystem and the descending escalator control subsystem through a first direct current bus;
s103, when the bus voltage is greater than or equal to a first threshold value and the first running current is greater than or equal to a second running current, controlling the descending escalator subsystem to output electric energy to the escalator control subsystem;
and S104, when the bus voltage is greater than or equal to a first threshold value and the first running current is smaller than the second running current, controlling the descending escalator subsystem to output electric energy to the ascending escalator control subsystem and the energy storage control subsystem.
Specifically, when the third contactor is in the suction state during normal operation of the escalator, the bus loop between the first frequency converter and the second frequency converter is already communicated, and the bus voltages of the two frequency converters should be the same. The ascending escalator is in a power consumption state, the descending escalator is in a power generation state when a load with a certain weight is reached, and when the descending escalator generates power, generated electric energy is transmitted to the second frequency converter through the second motor, so that the bus voltage of the second frequency converter is increased, and the second running current corresponding to the descending escalator is generated current. The embodiment of the invention obtains the first running current of the ascending escalator, the second running current of the descending escalator and the bus voltage of the first direct current bus, and performs the following control and adjustment:
1) When the bus voltage is smaller than a first threshold value (such as 680V), the two escalators are in an energy consumption state, at the moment, the energy storage controller judges whether the energy storage device stores electric quantity or not, if so, the fourth contactor is attracted, and the voltage regulating device is controlled to raise the voltage of the direct current bus end of the energy storage device side, so that a voltage difference is formed between the direct current bus end of the energy storage device and the direct current bus ends of the first frequency converter and the second frequency converter, and electric energy can be released to the ascending escalator and the descending escalator for use;
2) When the bus voltage is greater than or equal to the first threshold value, the downlink staircase is in a power generation state, and the system determines whether the energy storage module is connected and performs charging work by judging the electric energy consumed by the uplink staircase and the electric energy generated by the downlink staircase: (1) If the first running current is greater than or equal to the second running current, the electric energy generated by the downlink escalator can be completely consumed through the uplink escalator, at the moment, the fourth contactor is controlled to be in a disconnected state, and the downlink escalator directly generates electricity for the uplink escalator to use; (2) If the first running current is smaller than the second running current, the electric energy generated by descending of the escalator can meet the requirement of the consumption of the ascending escalator, and more additional electric energy can be generated, and at the moment, the fourth contactor is controlled to be attracted and charge the energy storage device.
Further as an alternative embodiment, the escalator control subsystem is provided with a brake resistor, and the control method further comprises the following steps:
when the bus voltage is greater than a preset second threshold value, controlling the downlink staircase subsystem to output electric energy to the uplink staircase control subsystem and the energy storage control subsystem, and consuming the residual electric energy through a brake resistor;
wherein the second threshold is greater than the first threshold.
Specifically, when the bus voltage is greater than a preset second threshold (e.g., 700V), it is indicated that the electric energy generated by the downlink escalator not only meets the consumption of the uplink escalator and the charging of the energy storage device, but also generates redundant electric energy, and at this time, the brake resistor connected through the second frequency converter is controlled to start to work so as to consume the additionally generated electric energy.
Further as an alternative implementation manner, before the step of obtaining the first running current of the first escalator through the escalator control subsystem, obtaining the second running current of the second escalator through the escalator control subsystem, and obtaining the bus voltage of the shared first direct current bus through the energy storage control subsystem, the method further comprises the following steps:
determining whether the first escalator is in a normal state or not through the ascending escalator subsystem, and determining whether the second escalator is in a normal state or not through the descending escalator subsystem;
when the first escalator and the second escalator are in a normal state, a direct current bus loop between the ascending escalator subsystem and the descending escalator subsystem is connected through the energy storage control subsystem.
Specifically, whether the first escalator and the second escalator are in a normal state (non-overhauling or failure state) is judged, and when the escalator is in the overhauling or failure state, the third contactor used for connecting the first frequency converter and the second frequency converter is not in attraction; when the first escalator and the second escalator are in a normal state, the system judges whether the escalator is opened or not; when the first escalator is opened, the system waits for the second escalator to be opened, after the two escalators are opened, the escalators representing the two frequency converters are in an electrified state, and at the moment, the third contactor is controlled to be attracted, so that a direct current bus loop between the ascending escalator subsystem and the descending escalator subsystem is connected, and the follow-up electric energy input/output control flow is started conveniently.
According to the embodiment of the invention, the ascending escalator control subsystem and the descending escalator control subsystem are subjected to direct current bus networking, energy storage and release control are realized through the energy storage control system, and the energy consumption states of the ascending escalator and the descending escalator are judged according to the first running current, the second running current and the bus voltage, so that the electric energy input of the ascending escalator control subsystem and the electric energy input/output of the descending escalator control subsystem can be dynamically regulated, the electric energy generated when the descending escalator control subsystem is subjected to heavy load can be input into the ascending escalator control subsystem for consumption and the energy storage control subsystem for storage, and the energy storage control subsystem can supply electric energy when the ascending escalator control subsystem and the descending escalator control subsystem are in the power consumption state, thereby reducing the energy consumption of the escalator and improving the electric energy utilization rate.
It can be understood that the content in the above system embodiment is applicable to the method embodiment, and the specific functions implemented by the method embodiment are the same as those of the above system embodiment, and the achieved beneficial effects are the same as those of the above system embodiment.
It should be appreciated that embodiments of the invention may be implemented or realized by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The above-described methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer readable storage medium configured with a computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, in accordance with the methods and drawings described in the specific embodiments. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes (or variations and/or combinations thereof) described herein may be performed under control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications), by hardware, or combinations thereof, collectively executing on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.
Further, the above-described methods may be implemented in any type of computing platform operatively connected to a suitable computing platform, including, but not limited to, a personal computer, mini-computer, mainframe, workstation, network or distributed computing environment, a separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and so forth. Aspects of the invention may be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and/or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, which when read by a computer, is operable to configure and operate the computer to perform the processes described herein. Further, the machine readable code, or portions thereof, may be transmitted over a wired or wireless network. When such media includes instructions or programs that, in conjunction with a microprocessor or other data processor, implement the steps described above, the invention described herein includes these and other different types of non-transitory computer-readable storage media. The invention also includes the computer itself when programmed according to the methods and techniques described herein.
The computer program can be applied to input data to perform the functions described herein, thereby converting the input data to generate output data that is stored to the non-volatile memory. The output information may also be applied to one or more output devices such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects produced on a display.
The present invention is not limited to the above embodiments, but can be modified, equivalent, improved, etc. by the same means to achieve the technical effects of the present invention, which are included in the spirit and principle of the present invention. Various modifications and variations are possible in the technical solution and/or in the embodiments within the scope of the invention.
Claims (10)
1. A common direct current bus escalator control system is characterized in that: the system comprises an ascending escalator control subsystem, a descending escalator control subsystem and an energy storage control subsystem, wherein the ascending escalator control subsystem and the descending escalator control subsystem share a first direct current bus, the ascending escalator control subsystem is used for controlling ascending of a first escalator and obtaining first running current of the first escalator, the descending escalator control subsystem is used for controlling descending of a second escalator and obtaining second running current of the second escalator, and the energy storage control subsystem is used for controlling electric energy input of the ascending escalator control subsystem and electric energy input/output of the descending escalator control subsystem according to the first running current, the second running current and bus voltage of the first direct current bus.
2. The co-dc bus escalator control system of claim 1, wherein:
the escalator control subsystem comprises a first main control board, a first frequency converter, a first contactor and a first motor, wherein the first frequency converter is electrically connected with the first motor through the first contactor, and the first frequency converter and the first contactor are both in signal connection with the first main control board;
the downlink staircase control subsystem comprises a second main control board, a second frequency converter, a second contactor and a second motor, wherein the second frequency converter is electrically connected with the second motor through the second contactor, and the second frequency converter and the second contactor are both in signal connection with the second main control board;
the first frequency converter and the second frequency converter are connected into the first direct current bus through the energy storage control subsystem, and the first main control board and the second main control board are connected with the energy storage control subsystem through signals.
3. The co-dc bus escalator control system of claim 2, wherein:
the first frequency converter is used for controlling the running state of the first motor according to the control signal of the first main control board, feeding back the first running current and the bus voltage to the first main control board, the first contactor is used for controlling the on-off between the first frequency converter and the first motor according to the control signal of the first main control board, and the first motor is used for driving the first escalator to ascend;
the second frequency converter is used for controlling the running state of the second motor according to the control signal of the second main control board, feeding back the second running current and the bus voltage to the second main control board, the second contactor is used for controlling the on-off between the second frequency converter and the second motor according to the control signal of the second main control board, and the second motor is used for driving the second escalator to descend and generating electric energy to feed back to the first direct current bus when the second escalator is in heavy-load descending.
4. The co-dc bus escalator control system of claim 2, wherein:
the downlink staircase control subsystem further comprises a brake resistor, wherein the brake resistor is connected into the first direct current bus through the second frequency converter, and the brake resistor is in signal connection with the second main control board.
5. A co-dc bus escalator control system as set forth in claim 3, wherein:
the energy storage control subsystem comprises a third contactor, a voltage regulating module, an energy storage device and an energy storage controller, wherein the first frequency converter is electrically connected with the second frequency converter through the third contactor, the energy storage device is electrically connected with the third contactor through the voltage regulating module, the third contactor is used for being connected with a first direct current bus, the first main control board, the second main control board, the third contactor, the voltage regulating module and the energy storage device are all in signal connection with the energy storage controller, and the energy storage controller is used for controlling the electric energy input/output of the energy storage device according to the first running current, the second running current and the bus voltage, controlling the electric energy input of the first motor through the first main control board and controlling the electric energy input/output of the second motor through the second main control board.
6. The co-dc bus escalator control system of claim 5, wherein:
the escalator control subsystem further comprises a fuse, the first frequency converter is electrically connected with the third contactor through the fuse, the escalator control subsystem further comprises an isolating switch, the second frequency converter is electrically connected with the third contactor through the isolating switch, and the isolating switch is in signal connection with the second main control board.
7. The co-dc bus escalator control system of claim 5, wherein:
the energy storage control subsystem further comprises a fourth contactor, the voltage regulating module is electrically connected with the third contactor through the fourth contactor, and the fourth contactor is in signal connection with the energy storage controller.
8. A control method of a common dc bus escalator control system for execution by the common dc bus escalator control system according to any one of claims 1 to 7, characterized by comprising the steps of:
the method comprises the steps of obtaining a first running current of a first escalator in an uplink through an uplink escalator control subsystem, obtaining a second running current of a second escalator in a downlink through a downlink escalator control subsystem, and obtaining a bus voltage of a shared first direct current bus through an energy storage control subsystem;
when the bus voltage is smaller than a preset first threshold value, controlling the energy storage control subsystem to output electric energy to the ascending escalator control subsystem and the descending escalator control subsystem through the first direct current bus;
when the bus voltage is greater than or equal to the first threshold value and the first running current is greater than or equal to the second running current, controlling the downlink staircase subsystem to output electric energy to the uplink staircase control subsystem;
and when the bus voltage is greater than or equal to the first threshold value and the first running current is smaller than the second running current, controlling the downlink staircase subsystem to output electric energy to the uplink staircase control subsystem and the energy storage control subsystem.
9. A control method according to claim 8, wherein the escalator control subsystem is provided with a brake resistor, the control method further comprising the steps of:
when the bus voltage is greater than a preset second threshold value, controlling the downlink staircase subsystem to output electric energy to the uplink staircase control subsystem and the energy storage control subsystem, and consuming the residual electric energy through the brake resistor;
wherein the second threshold is greater than the first threshold.
10. The control method according to claim 8, wherein before the step of obtaining the first running current of the first escalator via the escalator control subsystem, obtaining the second running current of the second escalator via the escalator subsystem, and obtaining the bus voltage of the common first dc bus via the energy storage control subsystem, the control method further comprises the steps of:
determining whether the first escalator is in a normal state through the ascending escalator subsystem, and determining whether the second escalator is in a normal state through the descending escalator subsystem;
when the first escalator and the second escalator are in a normal state, the energy storage control subsystem is used for switching on a direct current bus loop between the ascending escalator subsystem and the descending escalator subsystem.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310545882.9A CN116654749A (en) | 2023-05-15 | 2023-05-15 | Common direct current bus escalator control system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310545882.9A CN116654749A (en) | 2023-05-15 | 2023-05-15 | Common direct current bus escalator control system and control method thereof |
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| CN116654749A true CN116654749A (en) | 2023-08-29 |
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| CN202310545882.9A Pending CN116654749A (en) | 2023-05-15 | 2023-05-15 | Common direct current bus escalator control system and control method thereof |
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