CN202713168U - Frequency converter used in elevator - Google Patents

Frequency converter used in elevator Download PDF

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Publication number
CN202713168U
CN202713168U CN 201220246862 CN201220246862U CN202713168U CN 202713168 U CN202713168 U CN 202713168U CN 201220246862 CN201220246862 CN 201220246862 CN 201220246862 U CN201220246862 U CN 201220246862U CN 202713168 U CN202713168 U CN 202713168U
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CN
China
Prior art keywords
module
circuit
processing module
elevator
frequency transformer
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Expired - Lifetime
Application number
CN 201220246862
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Chinese (zh)
Inventor
钟玉涛
郑伟
曹力研
王国锋
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Shenzhen Hpmont Technology Co Ltd
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Shenzhen Hpmont Technology Co Ltd
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Priority to CN 201220246862 priority Critical patent/CN202713168U/en
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  • Indicating And Signalling Devices For Elevators (AREA)
  • Elevator Control (AREA)

Abstract

The utility model provides a frequency converter used in an elevator. The frequency converter comprises a rectification module, an inversion module, a processing module and a CAN communication module. The rectification module is used to receive first alternating current and transform the first alternating current to direct current. The inversion module coupled with the rectification module comprises a plurality of power switch tubes and transforms the direct current come from the rectification module to second alternating current. The processing module coupled with the inversion module receives a running instruction from an elevator controller and outputs a corresponding PWM signal. The power switch tubes in the inversion module outputs second alternating current with a preset frequency and a preset amplitude based on the PWM signal. The CAN communication module is connected with the processing module. The processing module and the elevator controller perform bidirectional data transmission through the CAN communication module. The frequency converter used in the elevator has simple wiring structure and relatively high reliability.

Description

Frequency transformer for elevator
Technical field
The utility model relates to the converter technique field, particularly relates to a kind of frequency transformer for elevator for apparatus for controlling elevator.
Background technology
Frequency converter is the important component part of apparatus for controlling elevator, is used for driving traction machine speed as requested and drives cage operation.
In apparatus for controlling elevator, frequency converter need to be used with electric life controller.Electric life controller connects outer trick, interior trick and sedan-chair top board etc., is used for the control of elevator operation logic and elevator protection etc.Frequency converter receives action command and the rate control instruction of electric life controller, and the control traction machine moves as requested.Come transmission of information by input and output digital quantity and analog quantity between traditional frequency converter and the electric life controller, between electric life controller and traditional frequency converter, transmit enable, up, descending, multistage is fast, frequency converter failure, frequency converter is in service and the signal such as code device signal, need the connecting line of use more, wiring is complicated, poor reliability.
The utility model content
Based on this, being necessary provides a kind of frequency transformer for elevator for apparatus for controlling elevator for the more problem of connecting line between traditional frequency converter and the electric life controller.
A kind of frequency transformer for elevator comprises:
Rectification module is used for receiving the first alternating current, and described the first alternating current is converted to direct current;
Inversion module couples with described rectification module, comprises a plurality of power switch pipes, and described inversion module will be converted to the second alternating current from the described direct current of described rectification module;
Processing module, couple with described inversion module, described processing module receives from the operating instruction of electric life controller and exports corresponding pwm signal, and the power switch pipe in the described inversion module is based on the second alternating current of described pwm signal output predeterminated frequency and default amplitude; And
The CAN communication module is connected with described processing module, and described processing module and described electric life controller carry out bidirectional data transfers with described CAN communication module.
Therein among embodiment, also comprise Switching Power Supply, described Switching Power Supply and described rectification module and described processing module couple, and described Switching Power Supply receives the direct current from described rectification module, and described direct current are converted to the direct-current working volts of described processing module.
Therein among embodiment, also comprise the drive amplification circuit, described drive amplification circuit is connected with described processing module and described inversion module, described drive amplification circuit amplifies the described pwm signal of described processing module output, and the pwm signal after will amplifying is sent to the power switch pipe in the described inversion module.
Among embodiment, also comprise testing circuit therein, described testing circuit is connected with described processing module, and described testing circuit detects the voltage and current of described frequency transformer for elevator, and the voltage and current that detects is sent into described processing module.
Therein among embodiment, also comprise encoder interface circuit, described encoder interface circuit is connected with described processing module, and described encoder interface circuit receives from the encoder tachometer signal on the traction machine motor shaft, and described encoder tachometer signal is sent into described processing module.
Among embodiment, also comprise the guidance panel interface circuit therein, described guidance panel interface circuit is connected with described processing module, and the peripheral operation panel carries out read-write operation by described guidance panel interface circuit to the frequency transformer for elevator function code.
Among embodiment, also comprise the soft starting circuit for reducing the impulse current of described direct current powered on moment therein, described soft starting circuit is arranged at the output of described rectification module.
Among embodiment, described soft starting circuit comprises switch and soft start resistance therein, and described switch and described soft start resistance are connected in parallel, and described processing module is the DSP microprocessor.
Therein among embodiment, comprise that also for described direct current being carried out filtering and store described galvanic dc-link capacitance, described dc-link capacitance is connected in parallel in the output of described rectification module.
Therein among embodiment, described frequency transformer for elevator comprises circuit board and shell, integrated main circuit and control circuit on the described circuit board, described main circuit comprises rectification module, inversion module, soft starting circuit and bus capacitor, described rectification module links to each other with described inversion module, described soft starting circuit is connected in series in the output of rectification module, and described bus capacitor is connected in parallel in the output of described rectification module; Described control circuit comprises processor, CAN communication module, Switching Power Supply, drive amplification circuit, testing circuit, encoder interface circuit and guidance panel interface circuit, the input of described Switching Power Supply links to each other with the output of described rectification module, and the output of described Switching Power Supply is connected in described processor; One end of described drive amplification circuit links to each other with described inversion module, and the other end links to each other with described processor; Described CAN communication module, testing circuit, encoder interface circuit and guidance panel interface circuit are connected in described processor.
Above-mentioned frequency transformer for elevator, be connected by the CAN communication module between processing module and the electric life controller, between electric life controller and frequency transformer for elevator by the transmission of CAN communication module enable, up, descending, multistage is fast, the frequency transformer for elevator fault, frequency transformer for elevator is in service and the signal such as code device signal, wiring construction is simple, and reliability is higher.
Description of drawings
Fig. 1 is the circuit theory diagrams of the frequency transformer for elevator of an embodiment.
Embodiment
In order to solve the more problem of connecting line between traditional frequency transformer for elevator and the electric life controller, provide a kind of frequency transformer for elevator for apparatus for controlling elevator.
As shown in Figure 1, the frequency transformer for elevator 100 of an embodiment comprises rectification module 110, inversion module 120, processing module 130 and CAN(Controller Area Network, controller local area network) communication module 140.
Rectification module 110 receives the first alternating current and converts the first alternating current to direct current.Usually, the input of rectification module 110 connects the three-phase alternating current (L1, L2, L3) of civil power collection terminal, and alternating current is output DC behind over commutation.Be understood that the input of rectification module 110 also can connect the individual event alternating current.In the present embodiment, frequency transformer for elevator 100 also comprises soft starting circuit (not indicating).Soft starting circuit is arranged at the output of rectification module 110, for reducing the impulse current of direct current powered on moment.Soft starting circuit comprises K switch and soft start resistance R, and K switch and soft start resistance R are connected in parallel.In addition, frequency transformer for elevator 100 comprises that also for direct current being carried out filtering and store described galvanic dc-link capacitance C, dc-link capacitance C is connected in parallel in the output of rectification module 110.Usually.Rectification module 110 is bridge rectifier, and after 110 rectifications of the first alternating current process rectification module, to dc-link capacitance C charging, the soft start resistance R has reduced the impact of immediate current to output current by the soft start resistance R.Dc-link capacitance C is used for energy storage and filtering.By the time dc-link capacitance C charging is full, and K switch is closed, and the soft start resistance R is bypassed.
Inversion module 120 couples with rectification module 110.Inversion module 120 comprises a plurality of power switch pipes, and the direct current of inversion module 120 in the future self-rectifying modules 110 is converted to for friendship the second alternating current that drives the traction machine motor M.
Processing module 130 couples with rectification module 110 and inversion module 120.Rectification module 110 converts the first alternating current to direct current, and the direct current one tunnel of output is delivered to inversion module 120, and another road is processing module 130 power supplies.Processing module 130 receives from the operating instruction of electric life controller and exports corresponding PWM(Pulse Width Modulation, pulse width modulation) signal, the power switch pipe in the inversion module 120 is based on the second alternating current of this pwm signal output predeterminated frequency and default amplitude.
CAN communication module 140 is connected with processing module 130.Processing module 130 is carried out bidirectional data transfers with electric life controller with CAN communication module 140.
Above-mentioned frequency transformer for elevator 100, be connected by CAN communication module 140 between processing module 130 and the electric life controller, between electric life controller and frequency transformer for elevator 100 by CAN communication module 140 transmission enable, up, descending, multistage is fast, the frequency transformer for elevator fault, frequency transformer for elevator is in service and the signal such as code device signal, wiring construction is simple, and reliability is higher.
In the present embodiment, processing module 130 is DSP(Digital Signal Processing, Digital Signal Processing) microprocessor.Frequency transformer for elevator 100 also comprises Switching Power Supply 150, usually.Switching Power Supply 150 is the DC/DC transducer.Switching Power Supply 150 couples with rectification module 110 and processing module 130, usually, is connected in parallel in the two ends of dc-link capacitance C.Switching Power Supply 150 receives the direct current from rectification module 110, and this direct current is converted to the direct-current working volts of processing module 130.
In the present embodiment, frequency transformer for elevator 100 also comprises drive amplification circuit 160.Drive amplification circuit 160 is connected with processing module 130 and inversion module 120.Drive amplification circuit 160 amplifies the pwm signal of processing module 120 outputs, and the pwm signal after will amplifying is sent to the power switch pipe in the inversion module 120, be that inversion module 120 is reverse into the frequency of traction machine motor M operation needs and the alternating voltage of amplitude with direct voltage, realize the frequency control purpose.
In the present embodiment, frequency transformer for elevator 100 also comprises testing circuit 170.Testing circuit 170 is connected with processing module 130.Testing circuit 170 detects the voltage and current of frequency transformer for elevator 100, and the voltage and current that detects is sent into processing module 130.The voltage and current that processing module 130 detects according to testing circuit 170 carries out the protections such as Current Control and overcurrent, overload, overvoltage.
In the present embodiment, frequency transformer for elevator 100 also comprises encoder interface circuit 180.Encoder interface circuit 180 is connected with processing module 130.Encoder interface circuit 180 receives from the encoder tachometer signal on the traction machine motor M axle, and this encoder tachometer signal is sent into processing module 130.Encoder interface circuit 180 is used for receiving the tachometer signal of traction machine motor M spindle encoder, and delivers to processing module 130, is used for speed and calculates and control.
In the present embodiment, frequency transformer for elevator 100 also comprises guidance panel interface circuit 190.Guidance panel interface circuit 190 is connected with processing module 130, and the peripheral operation panel carries out read-write operation by 190 pairs of frequency transformer for elevator 100 function codes of guidance panel interface circuit.Guidance panel interface circuit 190 can be used for the outer peripheral operation panel that draws, and the practical function code arranges and status poll.In order the operation such as function code to be read and write, the common built-in guidance panel of traditional frequency transformer for elevator.Frequency transformer for elevator 100 provides the functions such as read-write operation of function code in the communications protocol of CAN communication module 140, utilize the guidance panel of electric life controller to carry out the operations such as read-write capability code by 140 pairs of frequency transformer for elevator of CAN communication module 100, need not integrated guidance panel.If need to use guidance panel, can utilize guidance panel interface circuit 190, carry out the read-write operation of function code by drawing the peripheral operation panel outward.
Above-mentioned frequency transformer for elevator 100 is comprised of a circuit board and shell, integrated main circuit and control circuit on the circuit board.Main circuit comprises rectification module 110, inversion module 120, soft starting circuit (not indicating) and bus capacitor C, rectification module 110 links to each other with inversion module 120, soft starting circuit is connected in series in the output of rectification module 110, and bus capacitor C is connected in parallel in the output of rectification module 110.Control circuit comprises processor 130, CAN communication module 140, Switching Power Supply 150, drive amplification circuit 160, testing circuit 170, encoder interface circuit 180 and guidance panel interface circuit 190.The input of Switching Power Supply 150 links to each other with the output of rectification module 110, and the output of Switching Power Supply 150 is connected in processor 130.One end of drive amplification circuit 160 links to each other with inversion module 120, and the other end links to each other with processor 130.CAN communication module 140, testing circuit 170, encoder interface circuit 180 and guidance panel interface circuit 190 are connected in processor 130.Main circuit and control circuit are integrated on the circuit board so that structure is compacter, have saved the interface between main circuit and the control circuit, have saved system cost, have reduced the volume of frequency transformer for elevator, make things convenient for the operation and maintenance of product.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (10)

1. a frequency transformer for elevator is characterized in that, comprising:
Rectification module is used for receiving the first alternating current, and described the first alternating current is converted to direct current;
Inversion module couples with described rectification module, comprises a plurality of power switch pipes, and described inversion module will be converted to the second alternating current from the described direct current of described rectification module;
Processing module, couple with described inversion module, described processing module receives from the operating instruction of electric life controller and exports corresponding pwm signal, and the power switch pipe in the described inversion module is based on the second alternating current of described pwm signal output predeterminated frequency and default amplitude; And
The CAN communication module is connected with described processing module, and described processing module and described electric life controller carry out bidirectional data transfers with described CAN communication module.
2. frequency transformer for elevator according to claim 1, it is characterized in that, also comprise Switching Power Supply, described Switching Power Supply and described rectification module and described processing module couple, described Switching Power Supply receives the direct current from described rectification module, and described direct current is converted to the direct-current working volts of described processing module.
3. frequency transformer for elevator according to claim 1, it is characterized in that, also comprise the drive amplification circuit, described drive amplification circuit is connected with described processing module and described inversion module, described drive amplification circuit amplifies the described pwm signal of described processing module output, and the pwm signal after will amplifying is sent to the power switch pipe in the described inversion module.
4. frequency transformer for elevator according to claim 1, it is characterized in that, also comprise testing circuit, described testing circuit is connected with described processing module, described testing circuit detects the voltage and current of described frequency transformer for elevator, and the voltage and current that detects is sent into described processing module.
5. frequency transformer for elevator according to claim 1, it is characterized in that, also comprise encoder interface circuit, described encoder interface circuit is connected with described processing module, described encoder interface circuit receives from the encoder tachometer signal on the traction machine motor shaft, and described encoder tachometer signal is sent into described processing module.
6. frequency transformer for elevator according to claim 1, it is characterized in that, also comprise the guidance panel interface circuit, described guidance panel interface circuit is connected with described processing module, and the peripheral operation panel carries out read-write operation by described guidance panel interface circuit to the frequency transformer for elevator function code.
7. the described frequency transformer for elevator of any one in 6 according to claim 1 is characterized in that also comprise the soft starting circuit for reducing the impulse current of described direct current powered on moment, described soft starting circuit is arranged at the output of described rectification module.
8. frequency transformer for elevator according to claim 7 is characterized in that, described soft starting circuit comprises switch and soft start resistance, and described switch and described soft start resistance are connected in parallel; Described processing module is the DSP microprocessor.
9. frequency transformer for elevator according to claim 1 is characterized in that, comprises that also for described direct current being carried out filtering and store described galvanic dc-link capacitance, described dc-link capacitance is connected in parallel in the output of described rectification module.
10. frequency transformer for elevator according to claim 1, it is characterized in that, described frequency transformer for elevator comprises circuit board and shell, integrated main circuit and control circuit on the described circuit board, described main circuit comprises rectification module, inversion module, soft starting circuit and bus capacitor, described rectification module links to each other with described inversion module, and described soft starting circuit is connected in series in the output of rectification module, and described bus capacitor is connected in parallel in the output of described rectification module; Described control circuit comprises processor, CAN communication module, Switching Power Supply, drive amplification circuit, testing circuit, encoder interface circuit and guidance panel interface circuit, the input of described Switching Power Supply links to each other with the output of described rectification module, and the output of described Switching Power Supply is connected in described processor; One end of described drive amplification circuit links to each other with described inversion module, and the other end links to each other with described processor; Described CAN communication module, testing circuit, encoder interface circuit and guidance panel interface circuit are connected in described processor.
CN 201220246862 2012-05-29 2012-05-29 Frequency converter used in elevator Expired - Lifetime CN202713168U (en)

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CN 201220246862 CN202713168U (en) 2012-05-29 2012-05-29 Frequency converter used in elevator

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CN 201220246862 CN202713168U (en) 2012-05-29 2012-05-29 Frequency converter used in elevator

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108226811A (en) * 2017-12-30 2018-06-29 长园深瑞继保自动化有限公司 Converter power module liquidates test system
CN114268084A (en) * 2021-12-28 2022-04-01 苏州工业园区皓楷信息科技有限公司 Intelligent elevator safety management system and management method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108226811A (en) * 2017-12-30 2018-06-29 长园深瑞继保自动化有限公司 Converter power module liquidates test system
CN114268084A (en) * 2021-12-28 2022-04-01 苏州工业园区皓楷信息科技有限公司 Intelligent elevator safety management system and management method

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Granted publication date: 20130130