CN203368394U - AC motor asynchronous servo control electricity-saving device - Google Patents
AC motor asynchronous servo control electricity-saving device Download PDFInfo
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- CN203368394U CN203368394U CN 201320484400 CN201320484400U CN203368394U CN 203368394 U CN203368394 U CN 203368394U CN 201320484400 CN201320484400 CN 201320484400 CN 201320484400 U CN201320484400 U CN 201320484400U CN 203368394 U CN203368394 U CN 203368394U
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Abstract
The utility model discloses an AC motor asynchronous servo control electricity-saving device, which comprises a filtering part, a signal acquisition and conversion part and a control driving part, wherein the filtering part comprises an AC harmonic filtering unit, a DC filtering unit and a sine wave filtering unit, wherein the AC harmonic filtering unit is sequentially connected with a rectifying unit, the DC filtering unit, an IGBT inversion unit and the sine wave filtering unit; and the signal acquisition and conversion part comprises a voltage and current sampling unit which is arranged at two ends of the AC harmonic filtering unit and the DC filtering unit, a Hall current detecting unit which is connected with an output end of the sine wave filtering unit and an input end of a motor, and a multipath digital signal input unit and a multipath analog current/voltage signal conversion unit which care connected with a PLC and PID control unit. The AC motor asynchronous servo control electricity-saving device has the advantages of high electricity-saving rate, wide application range, complete function module, and high intelligent level.
Description
Technical field
The utility model relates to the asynchronous SERVO CONTROL battery saving arrangement of a kind of alternating current motor, belongs to power electronics and controls applied technical field.
Background technology
At present, the AC asynchronous motor power-saving technology mainly contains two kinds, and a kind of is by the step-down mode, reduces the loss of electric machine, and the mode of representative is for take the in good time tracking voltage-regulating and electricity-saving technology that controllable silicon is the pressure regulation unit; Another kind is the frequency converter timing power-saving technique.Controllable silicon is followed the tracks of on the equipment that power-saving technique is applied in fixed rotating speed and is solved motor " low load with strong power " problem, have wide range of applications, but controllable silicon is based on phased principle work, harmonic component is large, power factor is low, and motor working efficiency is low, and actual power savings is undesirable.The frequency control power-saving technique is effective, weak point is that frequency converter needs external signal conversion or signal to process the instrument module in application, the application difficulty is larger, and the frequency converter timing accuracy is lower, for many, Product Precision is required to high equipment, product such as injection molding machine, extruder, die casting machine etc. impacts, and can not bring into play good energy-saving benefit, has limited its range of application; In addition, frequency converter also produces a large amount of harmonic components in the process of commutation inversion, disturbs the peripheral equipment normal operation, and the frequency conversion power saving application is had a greatly reduced quality.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is, provides that a kind of power saving rate is high, applied range, functional module is complete, intelligent level the is high asynchronous SERVO CONTROL battery saving arrangement of alternating current motor.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the electric current and voltage sampling unit at AC harmonic filter unit and two ends, DC filtering unit, the Hall current detecting unit, the multiply digital signals input unit be connected with PLC and PID control unit and the multi-channel analog current and voltage signals converting unit that with the input of the output of sinusoidal wave filter unit and motor, are connected, described PLC and PID control unit are connected with the control drive part, and described electric current and voltage sampling unit also is connected with the control drive part.
The asynchronous SERVO CONTROL battery saving arrangement of aforesaid alternating current motor; it is characterized in that: described control drive part comprises control algorithm unit and slip compensating unit, control unit, SPWM signal formation and output unit, IGBT driving and the protected location, the IGBT inversion unit that connect successively, and described slip compensating unit, control unit, IGBT drive and protected location is connected with described control algorithm unit respectively.
The asynchronous SERVO CONTROL battery saving arrangement of aforesaid alternating current motor is characterized in that: described control unit comprises underloading Regulation Control unit, torque control unit and variable frequency regulating speed control unit.
The asynchronous SERVO CONTROL battery saving arrangement of aforesaid alternating current motor; it is characterized in that: also comprise error protection and the auto-manual bypass changeover unit of the output of the input that is connected across the AC harmonic filter unit and Hall current sampling unit, described error protection and auto-manual bypass changeover unit partly are connected with control algorithm with the electric current and voltage sampling unit.
The asynchronous SERVO CONTROL battery saving arrangement of aforesaid alternating current motor is characterized in that: also be connected with communication interface unit and man-machine interface input-output unit on described control algorithm unit
The beneficial effects of the utility model are: the SPWM pulse of the utility model drive motors adopts the vector synthetic technology, the SPWM output waveform is after sinusoidal wave filtering, according to pure sinusoidal wave the variation, harmonic content is little, power factor is large more than 0.98, and integrated PLC, PID control, and multiply digital signals and analog signal conversion module, the occasion that is applied in various regulated quantitys controls that more can be convenient and simple, have the asynchronous servo-controlled functions such as the pressure regulation of tracking, automatic frequency converter speed regulation, automatic torque control and communication transfer; The operation process of equipment accurately can be controlled and regulated, can follow the tracks of the working voltage of controlling motor, guarantee that motor is always in the economical operation state; Make this battery saving arrangement power saving rate, operation is controlled accurately, applied range.
The accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Embodiment
For further disclosing the technical solution of the utility model; describe execution mode of the present utility model in detail below in conjunction with accompanying drawing: as shown in Figure 1; the asynchronous SERVO CONTROL battery saving arrangement of alternating current motor; can be summarized as four major parts, that is: filtering part, signals collecting conversion portion, control drive part and error protection and auto-manual bypass changeover unit.
Filtering part comprises AC harmonic filter unit, DC filtering unit and sinusoidal wave filter unit, and the AC harmonic filter unit is connected with rectification unit, DC filtering unit, IGBT inversion unit, sinusoidal wave filter unit successively.
The signals collecting conversion portion comprises the electric current and voltage sampling unit that is arranged on AC harmonic filter unit and two ends, DC filtering unit, the Hall current detecting unit, the multiply digital signals input unit be connected with PLC and PID control unit and the multi-channel analog current and voltage signals converting unit that are connected with the input of the output of sinusoidal wave filter unit and motor, PLC and PID control unit are connected with the control drive part, and the electric current and voltage sampling unit also is connected with the control drive part.
Control drive part and comprise control algorithm unit and slip compensating unit, control unit, SPWM signal formation and output unit, IGBT driving and the protected location, the IGBT inversion unit that connect successively, slip compensating unit, control unit, IGBT drive and protected location is connected with the control algorithm unit respectively.Control unit comprises underloading Regulation Control unit, torque control unit and variable frequency regulating speed control unit.Also be connected with communication interface unit and man-machine interface input-output unit on the control algorithm unit.
Error protection and auto-manual bypass changeover unit are connected across the input of AC harmonic filter unit and the output of Hall current sampling unit, and partly are connected with control algorithm with the electric current and voltage sampling unit.
Main execution mode is: control algorithm unit (MCU) is according to the data of sampling section input, particularly according to the data of Hall current detecting unit and PLC and PID control unit, carry out high-speed computation, export in good time adjusting control signal, control underloading Regulation Control unit, the torque control unit, the work of frequency control unit and slip compensating unit, make these three control unit outputs be applicable to the Optimal Control signal of machine operation, by SPWM signal formation and the synthetic SPWM signal changed of output unit in good time, drive the work of IGBT inversion unit, the SPWM of IGBT inversion unit output drives the pulse-width modulation solution harmonic of ripple for changing by sinusoidal rule, carrier frequency is very high, cause harmonic voltage very high, therefore the output at the IGBT inversion unit is connected with sinusoidal wave filter unit, this SPWM ripple is corrected into to the sine wave that meets relevant criterion, drive motor work, can reduce the increase of the copper loss iron loss that motor causes because of high order harmonic component, reduce caloric value, improve the utilization ratio of motor electric energy.The Hall current detecting unit is connected on the output of sinusoidal wave filter unit, can not be subject to the interference of harmonic wave, accurate by the current delivery of machine operation to MCU and Regulation Control unit.
The AC harmonic filter unit is connected on the power input of controlling drive part, and the harmonic filtration that this unit switching process can be produced, guarantee that power supply is not subject to humorous wave interference; Power factor is improved simultaneously, reduced system loss.
The DC filtering unit connects between the rectification unit and inversion unit of controlling drive part, guarantees that the direct current waveform of rectification unit output is level and smooth, fluctuates little, separately can improve the power factor of controlling drive part.
The input of electric current and voltage sampling unit is connected on power input, and it is upper that MCU is received in output, detects variation and the control algorithm of power supply for MCU, and show variable quantity on man-machine interface.
Multiply digital signals input unit and multi-channel analog electric current and voltage converting unit for the process data that gathers the operation of motor place plant equipment as temperature, pressure, flow etc. with the action sequence step as switch, enter, exit, displacement etc., then convert this process data and actuating quantity to signal that PLC can identify, input to PLC and PID control unit, PLC and PID control unit input to the MCU analyzing and processing by the semaphore received, and control the motor operation.
Error protection and auto-manual bypass changeover unit directly are connected across the input of AC harmonic filter unit and the output of Hall current sampling unit, for a kind of emergency power working power when the servo s operation control drive part fault is provided.Its control can also can be set the action switching by man-machine interface by the instruction auto-action switching of MCU, can also manually by button actions, switch.
more than, by description of listed embodiment, basic conception of the present utility model and basic principle have been set forth.But the utility model never is limited to above-mentioned listed execution mode, every equivalent variations of doing based on the technical solution of the utility model, improvement and the deliberately of inferior quality behavior of change, all should belong to protection range of the present utility model.
Claims (5)
1. the asynchronous SERVO CONTROL battery saving arrangement of alternating current motor, it is characterized in that: comprise filtering part, signals collecting conversion portion and control drive part, described filtering part comprises AC harmonic filter unit, DC filtering unit, sinusoidal wave filter unit, and described AC harmonic filter unit is connected with rectification unit, DC filtering unit, IGBT inversion unit, sinusoidal wave filter unit successively; Described signals collecting conversion portion comprises the electric current and voltage sampling unit that is arranged on AC harmonic filter unit and two ends, DC filtering unit, the Hall current detecting unit, the multiply digital signals input unit be connected with PLC and PID control unit and the multi-channel analog current and voltage signals converting unit that are connected with the input of the output of sinusoidal wave filter unit and motor, described PLC and PID control unit are connected with the control drive part, and described electric current and voltage sampling unit also is connected with the control drive part.
2. the asynchronous SERVO CONTROL battery saving arrangement of alternating current motor according to claim 1; it is characterized in that: described control drive part comprises control algorithm unit and slip compensating unit, control unit, SPWM signal formation and output unit, IGBT driving and the protected location, the IGBT inversion unit that connect successively, and described slip compensating unit, control unit, IGBT drive and protected location is connected with described control algorithm unit respectively.
3. the asynchronous SERVO CONTROL battery saving arrangement of alternating current motor according to claim 2, it is characterized in that: described control unit comprises underloading Regulation Control unit, torque control unit and variable frequency regulating speed control unit.
4. the asynchronous SERVO CONTROL battery saving arrangement of alternating current motor according to claim 1; it is characterized in that: also comprise error protection and the auto-manual bypass changeover unit of the output of the input that is connected across the AC harmonic filter unit and Hall current sampling unit, described error protection and auto-manual bypass changeover unit partly are connected with control algorithm with the electric current and voltage sampling unit.
5. the asynchronous SERVO CONTROL battery saving arrangement of alternating current motor according to claim 2, is characterized in that: also be connected with communication interface unit and man-machine interface input-output unit on described control algorithm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320484400 CN203368394U (en) | 2013-08-09 | 2013-08-09 | AC motor asynchronous servo control electricity-saving device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320484400 CN203368394U (en) | 2013-08-09 | 2013-08-09 | AC motor asynchronous servo control electricity-saving device |
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| CN203368394U true CN203368394U (en) | 2013-12-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226955A (en) * | 2014-06-23 | 2016-01-06 | 上海安川电动机器有限公司 | Frequency converter |
| CN109149989A (en) * | 2018-11-08 | 2019-01-04 | 国网江苏省电力有限公司南通供电分公司 | A kind of inverter based on Induction Motor-Driven |
-
2013
- 2013-08-09 CN CN 201320484400 patent/CN203368394U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226955A (en) * | 2014-06-23 | 2016-01-06 | 上海安川电动机器有限公司 | Frequency converter |
| CN105226955B (en) * | 2014-06-23 | 2018-07-20 | 上海安川电动机器有限公司 | Frequency converter |
| CN109149989A (en) * | 2018-11-08 | 2019-01-04 | 国网江苏省电力有限公司南通供电分公司 | A kind of inverter based on Induction Motor-Driven |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20160809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |