CN220935044U - Special frequency converter control system for single inversion lifter of common direct current bus - Google Patents
Special frequency converter control system for single inversion lifter of common direct current bus Download PDFInfo
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- CN220935044U CN220935044U CN202323041125.2U CN202323041125U CN220935044U CN 220935044 U CN220935044 U CN 220935044U CN 202323041125 U CN202323041125 U CN 202323041125U CN 220935044 U CN220935044 U CN 220935044U
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- 230000005611 electricity Effects 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
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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 application discloses a special frequency converter control system for a common direct current bus independent inversion lifter, which comprises: the frequency converter comprises an input rectifying unit, a filtering unit, a direct current bus, an output inversion unit, a driving plate, a service main controller and a motor encoder interface, wherein the input rectifying unit is electrically connected with the filtering unit; the motor encoders are connected with the driving plate through corresponding motor encoder interfaces; the driving motor is respectively connected with the corresponding output inversion unit and the motor encoder; and the door motor is respectively connected with the corresponding output inversion unit and the motor encoder to provide the integration level of the control system, reduce the number of frequency converters and save the cost.
Description
Technical Field
The application relates to the technical field of elevator control, in particular to a special frequency converter control system for a common direct current bus independent inversion elevator.
Background
Building construction elevators are widely used material transport machines on construction sites. The current construction elevator motor mainly comprises a driving motor for controlling the elevator to run up and down, a door motor for controlling the opening and closing of a feeding door and a discharging door, and a main frequency converter of the driving motor. When the construction hoist is in operation, the main frequency converter is a direct drive motor, and the door motor for controlling the opening and closing of the feeding door and the discharging door is required to be driven by a small frequency converter alone. And if other components need to be controlled, an additional frequency converter needs to be added separately for control. Resulting in excessive frequency converters of the elevator and high costs. And each motor is driven by a separate frequency converter, so that the structure of the elevator system is too scattered, and the integration level is low.
Disclosure of utility model
The embodiment of the application aims to provide a special frequency converter control system for a common direct current bus independent inversion elevator, which is used for solving the technical problems of low integration level, more frequency converters and high cost of the elevator control system in the prior art.
In order to achieve the above object, a first aspect of the present application provides a control system for a frequency converter dedicated to a common dc bus independent inverter lifter, the control system comprising:
The frequency converter comprises an input rectifying unit, a filtering unit, a direct current bus, an output inversion unit, a driving plate, a service main controller and a motor encoder interface, wherein the input rectifying unit is electrically connected with the filtering unit;
The motor encoders are connected with the driving plate through corresponding motor encoder interfaces;
The driving motor is respectively connected with the corresponding output inversion unit and the motor encoder and is used for driving the lifting cage of the lifter to operate;
And the door motor is respectively connected with the corresponding output inversion unit and the motor encoder and is used for driving the discharge door and/or the feed door of the elevator to operate.
In the embodiment of the application, the frequency converter further comprises a braking resistor electrically connected with the direct current bus for consuming energy.
In an embodiment of the present application, the plurality of motor encoders includes a drive motor encoder and a gantry motor encoder.
In the embodiment of the application, a plurality of door motor are arranged, and each door motor is connected with a door motor encoder.
In an embodiment of the present application, the control system further includes: the alternating current contactor is respectively connected with the door motor and the output inversion unit.
In the embodiment of the application, the frequency converter further comprises a keyboard indicator lamp connected with the driving plate and used for indicating the use state.
In the embodiment of the application, the keyboard indicator lamp is connected with the driving board through an RS485 interface.
In the embodiment of the application, the driving plate is connected with the output inversion unit in a PWM pulse mode.
In the embodiment of the application, the driving board is connected with the service main controller through a parallel bus.
In the embodiment of the application, the service main controller adopts an STM32F103 service logic chip.
Through the technical scheme, the door motor and the driving motor share the frequency converter, so that control logic of the door motor and the driving motor can be integrated in the frequency converter, the integration level of a control system is provided, the number of the frequency converters is reduced, and the cost is saved. And the door motor and the driving motor share the input rectifying unit, the filtering unit and the direct current bus of the frequency converter, and can be driven by adopting independent output inversion units aiming at different motors, so that the door motor and the driving motor can be controlled in a time-sharing and sectional manner, the cage, the discharging door and the feeding door of the elevator at any moment are ensured to work by only one actuating mechanism, and the control capability of the actuating mechanism is enhanced.
Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
FIG. 1 schematically illustrates a block diagram of a common DC bus single inverter elevator dedicated inverter control system in accordance with an embodiment of the present application;
Fig. 2 schematically illustrates a schematic diagram of a common dc bus single inverter lifter dedicated inverter control system in accordance with an embodiment of the present application.
Description of the reference numerals
M, driving motor M3, door machine motor
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it should be understood that the detailed description described herein is merely for illustrating and explaining the embodiments of the present application, and is not intended to limit the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Fig. 1 schematically shows a block diagram of a control system for a frequency converter dedicated to a single inverter lifter for a common dc bus according to an embodiment of the present application. As shown in fig. 1, in an embodiment of the present application, there is provided a control system 100 for a frequency converter dedicated to a common dc bus single inverter lifter, the control system 100 including:
The frequency converter 101, the frequency converter 101 includes input rectifying element, filter unit, direct current generating line, output contravariant unit, drive plate, business master controller and motor encoder interface, and input rectifying element is connected with filter unit electricity, and direct current generating line is connected with filter unit and output contravariant unit electricity respectively, and the drive plate is connected with business master controller, output contravariant unit and motor encoder interface respectively, and every output contravariant unit is connected with corresponding driving motor or door electromechanical machine electricity.
A plurality of motor encoders 102, each motor encoder being connected to the drive plate by a corresponding motor encoder interface.
And the driving motor 103 is respectively connected with the corresponding output inversion unit and the motor encoder and is used for driving the lifting cage of the lifter to operate.
And the door motor 104 is respectively connected with the corresponding output inversion unit and the motor encoder and is used for driving the discharge door and/or the feed door of the elevator to operate.
The frequency converter refers to a power control device for controlling an ac motor by changing the frequency of the operating power supply of the motor. The frequency converter 101 includes an input rectifying unit, a filtering unit, a dc bus, an output inverting unit, a driving board, a service main controller, and a motor encoder interface. The input rectifying unit is electrically connected with the filtering unit. The direct current bus is electrically connected with the filtering unit and the output inversion unit respectively. The driving board is connected with the service main controller. Specifically, in the embodiment of the application, the driving board is connected with the service main controller through a parallel bus. In the embodiment of the application, the service main controller adopts an STM32F103 service logic chip. Namely, the drive board is connected with the STM32F103 business logic chip through a parallel bus.
The driving plate is also connected with the output inversion unit. Specifically, in the embodiment of the application, the driving board is connected with the output inversion unit in a PWM pulse mode.
The drive plate is also interfaced with the motor encoder. Each output inversion unit is electrically connected with a corresponding driving motor or a corresponding door motor.
The input rectifying unit is used for converting alternating current input into the frequency converter into direct current. The filtering unit may filter the direct current. The direct current bus can receive the direct current filtered by the filtering unit and convey the filtered direct current to the output inversion unit. The output inversion unit can convert the direct current into alternating current with the same frequency as the driving motor and the door motor. The driving board is used for receiving instructions of the main board or the external equipment and converting the instructions into control signals so as to control and drive other hardware equipment to work. The service main controller is used for realizing control of the drive board.
Each motor encoder may be connected to the drive plate through a corresponding motor encoder interface. Specifically, in an embodiment of the present application, the plurality of motor encoders 102 may include a drive motor encoder and a gantry motor encoder. The drive motor encoder may be connected to the drive plate through a corresponding motor encoder interface. The motor encoder of the door machine can be connected with the driving plate through the corresponding motor encoder interface. The driving motor 103 may be connected to a driving motor encoder, and may also be connected to a corresponding output inverter unit. The door motor 104 may be connected to a door motor encoder, and may also be connected to a corresponding output inverter unit.
Wherein a door motor encoder may be used to collect the operating parameters of the door motor 104. The drive motor encoder may collect the operating parameters of the drive motor 103. The operating parameters may be current and voltage, etc. The drive motor 103 may be used to drive the cage operation of the elevator. The door motor 104 may be used to drive the elevator discharge door and/or feed door operation. The elevator may be a building construction elevator.
In the embodiment of the application, the frequency converter further comprises a braking resistor electrically connected with the direct current bus for consuming energy.
The inverter 101 also includes a braking resistor electrically connected to the dc bus. Wherein the braking resistor is used for consuming energy. Specifically, the braking resistor may consume energy generated by the driving motor 103 during the descent of the cage of the elevator, and braking energy generated when the cage decelerates, to protect the control system.
In the embodiment of the application, the frequency converter further comprises a keyboard indicator lamp connected with the driving plate and used for indicating the use state.
The frequency converter 101 also includes a keyboard indicator light connected to the drive board. A keyboard indicator light may be used to indicate the status of use.
The frequency converter 101 includes an input rectifying unit, a filtering unit, a dc bus, an output inverting unit, a driving board, a service main controller, a motor encoder interface, a brake resistor, and a keyboard indicator. The input sorting unit, the filtering unit, the direct current bus and the output inversion unit are electrically connected in sequence. The direct current bus is electrically connected with the brake resistor. The driving plate is connected with the output inversion unit in a PWM pulse mode. The driving board is connected with the service main controller through a parallel bus. The driving board is connected with the keyboard indicator lamp through an RS485 interface. The drive plate is electrically connected with the motor encoder interface.
In the embodiment of the application, a plurality of door motor are arranged, and each door motor is connected with a door motor encoder.
The number of gantry motors 104 is multiple, with each gantry motor being coupled to a gantry motor encoder.
In an embodiment of the present application, the control system further includes: the alternating current contactor is respectively connected with the door motor and the output inversion unit.
The control system also includes an ac contactor. The alternating current contactor is respectively connected with the motor of the door machine and the output inversion unit. Under the condition that a plurality of door machine motors are controlled by the same output inversion unit, an alternating current contactor can be used for switching different door machine motors to be communicated with the output inversion unit so as to realize the control of different door machine motors by one output inversion unit.
In the embodiment of the application, the special frequency converter control system for the single inverter lifter of the common direct current bus comprises a frequency converter, a plurality of motor encoders, a driving motor, a door motor and an alternating current contactor.
The frequency converter comprises an input rectifying unit, a filtering unit, a direct current bus, an output inversion unit, a driving plate, a service main controller, a motor encoder interface, a braking resistor and a keyboard indicator lamp. Wherein, the business master controller adopts STM32F103 business logic chip. The input arrangement unit, the filtering unit, the direct current bus and the output inversion unit are electrically connected in sequence. The direct current bus is electrically connected with the brake resistor. The driving plate is connected with the output inversion unit in a PWM pulse mode. The driving board is connected with the service main controller through a parallel bus. The driving board is connected with the keyboard indicator lamp through an RS485 interface. The drive plate is electrically connected with the motor encoder interface.
The plurality of motor encoders includes a drive motor encoder and a door motor encoder. The driving motor encoder is connected with the driving plate through a corresponding motor encoder interface. The motor encoder of the door machine is connected with the driving plate through a corresponding motor encoder interface.
The driving motor is respectively connected with the corresponding output inversion unit and the driving motor encoder. The door motor is respectively connected with the corresponding output inversion unit and the door motor encoder. The door motor can be a plurality of door motors, and each door motor can be connected with a door motor encoder. The alternating current contactor can be respectively connected with the door motor and the output inversion unit.
In the embodiment of the application, as shown in fig. 2, the special frequency converter control system for the single inverter lifter with the common direct current bus comprises a brake resistor, an input rectifying unit, a filtering unit, a direct current bus part, an output inverter 1, an output inverter 2, an output inverter 3, a DSP driving board, an STM32F103 business logic chip, an ABZ differential interface, a keyboard/indicator light module, two driving motors M, two gantry motors M3, a motor encoder 2 and a motor encoder 3. Wherein the two drive motors M comprise a drive motor 1 and a drive motor 2.
The input rectifying unit can be communicated with three phase line incoming lines (R, T, S) and one zero line incoming line (N) of the switch so as to receive alternating current transmitted by three-phase power supplies (L1, L2, L3 and N). The input rectifying unit is electrically connected with the filtering unit. The filtering unit is electrically connected with a direct current bus part, and the direct current bus part is electrically connected with an output inverter 1, an output inverter 2 and an output inverter 3 respectively. The direct current bus part is also connected with a brake resistor through a PB terminal and a P terminal. The output inverter 1 is respectively connected with the driving motor 1 and the driving motor 2. The output inverter 2 is connected with one gantry crane motor M3, and the output inverter 3 is connected with the other gantry crane motor M3. The DSP driving board is connected with the output inverter 1, the output inverter 2 and the output inverter 3 in a PWM pulse mode. The DSP drive board is connected with the keyboard/indicator lamp module through an RS458 interface. The DSP driving board is connected with the STM32F103 business logic chip through a parallel bus. The driving motor 2 can be connected with the motor encoder 1, and the motor encoder 1 can be connected with the DSP driving board through an ABZ differential interface. A door motor M3 may be connected to the motor encoder 2, and the motor encoder 2 may be connected to the DSP drive board through an ABZ differential interface. The other door motor M3 can be connected with the motor encoder 3, and the motor encoder 3 can be connected with the DSP driving board through an ABZ differential interface.
The input rectifying unit can receive alternating current transmitted by a three-phase power supply (L1, L2, L3 and N) through three phase line incoming wires (R, T, S) and one zero line incoming wire (N) of the switch. After receiving the alternating current, the input rectifying unit may convert the alternating current into direct current and transmit the direct current to the filtering unit. The filtering unit can carry out filtering treatment on the direct current and transmit the direct current after filtering to the direct current bus part. The direct current bus part can convey the direct current filtered by the filtering unit to the output inverter 1, the output inverter 2 and the output inverter 3. The output inverter 1 can convert direct current into alternating current and supply three-phase alternating current to the drive motor 1 through (U1, V1, W1). The output inverter 1 can also supply three-phase alternating current to the drive motor 2 through (U2, V2, W2). The output inverter 2 can convert direct current into alternating current and provide three-phase alternating current to a door motor connected with the output inverter through (U3, V3 and W3). The output inverter 3 can convert direct current into alternating current and provide three-phase alternating current to a door motor connected with the output inverter through (U4, V4 and W4).
The DSP driving board is respectively connected with the motor encoder 1, the motor encoder 2 and the motor encoder 3 through ABZ differential interfaces. The DSP driving board also respectively collects the current and the voltage of the driving motor 1 and the driving motor 2 through (U1, V1, W1) and (U2, V2, W2), and respectively collects the current and the voltage of the two gantry crane motors through (U3, V3, W3) and (U4, V4, W4).
The driving motor 1 can also be connected with an interface of the band-type brake 1. The driving motor 2 can be connected with the motor encoder 1 and also can be connected with an interface of the band-type brake 2. One door motor may be connected to the motor encoder 2 and the other door motor may be connected to the motor encoder 3.
Through the technical scheme, the door motor and the driving motor share the frequency converter, so that control logic of the door motor and the driving motor can be integrated in the frequency converter, the integration level of a control system is provided, the number of the frequency converters is reduced, and the cost is saved. And the door motor and the driving motor share the input rectifying unit, the filtering unit and the direct current bus of the frequency converter, and can be driven by adopting independent output inversion units aiming at different motors, so that the door motor and the driving motor can be controlled in a time-sharing and sectional manner, the cage, the discharging door and the feeding door of the elevator at any moment are ensured to work by only one actuating mechanism, and the control capability of the actuating mechanism is enhanced.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A common dc bus single inverter lifter dedicated inverter control system, characterized in that the control system comprises:
The frequency converter comprises an input rectifying unit, a filtering unit, a direct current bus, an output inversion unit, a driving plate, a service main controller and a motor encoder interface, wherein the input rectifying unit is electrically connected with the filtering unit, the direct current bus is respectively and electrically connected with the filtering unit and the output inversion unit, the driving plate is respectively connected with the service main controller, the output inversion unit and the motor encoder interface, and each output inversion unit is electrically connected with a corresponding driving motor or a door motor;
The motor encoders are connected with the driving plate through corresponding motor encoder interfaces;
The driving motor is respectively connected with the corresponding output inversion unit and the motor encoder and is used for driving the lifting cage of the lifter to operate;
And the door motor is respectively connected with the corresponding output inversion unit and the motor encoder and is used for driving the discharge door and/or the feed door of the lifter to operate.
2. The converter control system for a single inverter lift of a common dc bus of claim 1, wherein the converter further comprises a brake resistor electrically connected to the dc bus for dissipating energy.
3. The system of claim 1, wherein the plurality of motor encoders includes a drive motor encoder and a gantry motor encoder.
4. A common dc bus single inverter elevator dedicated inverter control system as defined in claim 3 wherein there are a plurality of said gantry motors, each gantry motor being connected to a gantry motor encoder.
5. The common dc bus single inverter lifter dedicated inverter control system of claim 1, further comprising:
And the alternating current contactor is respectively connected with the door motor and the output inversion unit.
6. The system of claim 1, wherein the inverter further comprises a keyboard indicator light connected to the drive board for indicating a status of use.
7. The system of claim 6, wherein the keyboard indicator light is connected with the drive board through an RS485 interface.
8. The inverter control system for a single inverter lifter of a common dc bus according to claim 1, wherein the driving board is connected to the output inverter unit by means of PWM pulses.
9. The system of claim 1, wherein the drive board is connected to the service master controller via a parallel bus.
10. The system of claim 1, wherein the service master controller is an STM32F103 service logic chip.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323041125.2U CN220935044U (en) | 2023-11-10 | 2023-11-10 | Special frequency converter control system for single inversion lifter of common direct current bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323041125.2U CN220935044U (en) | 2023-11-10 | 2023-11-10 | Special frequency converter control system for single inversion lifter of common direct current bus |
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| CN220935044U true CN220935044U (en) | 2024-05-10 |
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| CN202323041125.2U Active CN220935044U (en) | 2023-11-10 | 2023-11-10 | Special frequency converter control system for single inversion lifter of common direct current bus |
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- 2023-11-10 CN CN202323041125.2U patent/CN220935044U/en active Active
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