CN203377831U - Frequency converter redundancy control system - Google Patents
Frequency converter redundancy control system Download PDFInfo
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- CN203377831U CN203377831U CN201320294251.6U CN201320294251U CN203377831U CN 203377831 U CN203377831 U CN 203377831U CN 201320294251 U CN201320294251 U CN 201320294251U CN 203377831 U CN203377831 U CN 203377831U
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- Prior art keywords
- frequency converter
- control system
- redundancy control
- motor
- frequency
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Abstract
The utility model relates to a frequency converter redundancy control system, comprising a master frequency converter and at least two slave frequency converters for driving a motor. The master frequency converter and slave frequency converters are in parallel connection and run synchronously; the slave frequency converters output the same power for driving the motor; and when one slave frequency converter fails, the other drives the motor to work normally, long-term stable operation of the motor is guaranteed, the shutdown rate is reduced, the production efficiency is raised, and maintenance cost is decreased.
Description
Technical field
The utility model relates to a kind of frequency converter redundancy control system.
Background technology
In industrial occasions, it is common controlling alternating current machine with frequency converter, once and frequency converter breaks down, will have a strong impact on industrial efficiency.
In order to reduce frequency converter, break down on industrial impact, common a kind of technical scheme is that two frequency converters are set now, a wherein frequency converter operation, another frequency converter keeps armed state, when the frequency converter in operation breaks down, start the frequency converter of awaiting orders by control system, continue the drive motor operation.
Yet, in when switching, there is the process of slowing down and accelerating when two frequency converters in this technical scheme Shortcomings, and therefore, the process of switching can cause the shake of load, this,, for the industry higher concerning load request, is unacceptable.
The utility model content
For solving the problems of the technologies described above, the utility model provides a kind of frequency converter redundancy control system.
For achieving the above object, the technical scheme that the utility model provides is: a kind of frequency converter redundancy control system comprises: primary transducer; At least two from frequency converter, for drive motors; Wherein, described primary transducer and described from the parallel setting of frequency converter and synchronous operation, described from the identical described motor of power drives of the synchronous output of frequency converter, when described from frequency converter one breaks down, described another one from frequency converter drives described motor normally to move.
Preferably, described primary transducer is not connected with described motor.
Preferably, when described any one fault occurred from frequency converter is disengaged, can continue to put into operation.
Preferably, the described voltage from frequency converter output, phase place and frequency are consistent.
Preferably, described frequency converter redundancy control system comprises that four from frequency converter.
Preferably, described primary transducer and described from frequency converter, be same frequency converter.
With respect to prior art, the frequency converter redundancy control system that the utility model provides, can guarantee the long-term stability operation of motor, reduces the number of times of disorderly closedown, enhances productivity and reduce maintenance cost.
The accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail:
The schematic diagram of the frequency converter redundancy control system that Fig. 1 provides for the utility model execution mode;
The waveform schematic diagram of system while quitting work from frequency converter and machine operation in the frequency converter redundancy control system that Fig. 2 provides for the utility model execution mode.
Embodiment
Below with reference to execution mode shown in the drawings, the utility model is described in detail; but these execution modes do not limit the utility model, the conversion on the structure that those of ordinary skill in the art makes according to these execution modes, method or function all is included in protection range of the present utility model.
Refer to Fig. 1, the frequency converter redundancy control system comprises primary transducer 1, from frequency converter 2 with from frequency converter 3.Primary transducer 1 comprises control unit 11 and power unit 13, the input of power unit 13 connects the external ac power source input, power unit 13 is connected with control unit 11, power unit 13 is under the control of control unit 11, the power supply that output has predefined voltage and frequency, control alternating current machine M and carry out work.Described the same with primary transducer 1 with the structure from frequency converter 3 from frequency converter 2, comprise respectively control unit 21,31 and power unit 23,33.
From frequency converter 2 with are frequency converters identical with primary transducer 1 from frequency converter 3, primary transducer 1, be connected outside 24V power supply from frequency converter 2 with the OPTA1 from frequency converter 3, and primary transducer 1, interconnect in twos from frequency converter 2 with from the OPTD2 of frequency converter 3.Wherein, primary transducer 1 is not connected with motor M, from frequency converter 2, with the output from frequency converter 3, with motor M, is connected simultaneously.
Please in the lump referring to Fig. 2, primary transducer 1, from frequency converter 2 with from frequency converter 3 parallel synchronous operations, from frequency converter 2 with from frequency converter 3, keep identical PWM waveform to export driving alternating current machine M simultaneously, from frequency converter 2 with from the output voltage of frequency converter 3, it is consistent that phase place and frequency remain.When one of them breaks down from frequency converter, first shown in figure quits work in advance from frequency converter, second is still working from frequency converter, now motor keeps normal operation from the independent driving of frequency converter at second, and the electric current of the speed of motor and motor does not all change.
In the frequency converter redundancy control system provided at the utility model, that breaks down can not affect the operation of system from frequency converter, if what break down is hardware fault from frequency converter, it can be taken out and place under repair or change from whole system, if what break down is software fault from frequency converter, it can carry out the software reset and be got rid of, after fault is got rid of, should can recover and other parallel runnings from frequency converter from frequency converter, and continue to drive alternating current machine M with other from frequency converter simultaneously.
In the present embodiment, in the frequency converter redundancy control system in parallel two from frequency converter, in unshowned execution mode, the frequency converter redundancy control system can be in parallel four from frequency converter, these four keep identical PMW waveform to export to drive alternating current machine from frequency converter is same, and each is from the output voltage of frequency converter, phase place, frequency is all consistent.
The frequency converter redundancy control system that the utility model provides, can guarantee the long-term stability operation of motor, reduces the number of times of disorderly closedown, enhances productivity and reduce maintenance cost.
What it may occur to persons skilled in the art that is; the utility model can also have other implementation; but as long as its technical spirit adopted is identical or close in the utility model, or any easy full of beard of making based on the utility model and variation and replace all within protection range of the present utility model.
Claims (6)
1. a frequency converter redundancy control system, is characterized in that, comprising:
Primary transducer;
At least two from frequency converter, for drive motors;
Wherein, described primary transducer and described from the parallel setting of frequency converter and synchronous operation, described from the identical described motor of power drives of the synchronous output of frequency converter, when described from frequency converter one breaks down, described another one from frequency converter drives described motor normally to move.
2. frequency converter redundancy control system according to claim 1, it is characterized in that: described primary transducer is not connected with described motor.
3. frequency converter redundancy control system according to claim 1, is characterized in that: when described any one fault occurred from frequency converter is disengaged, can continue to put into operation.
4. frequency converter redundancy control system according to claim 1 is characterized in that: the described voltage from frequency converter output, phase place and frequency are consistent.
5. frequency converter redundancy control system according to claim 1, it is characterized in that: described frequency converter redundancy control system comprises that four from frequency converter.
6. frequency converter redundancy control system according to claim 1 is characterized in that: described primary transducer and described from frequency converter, be same frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320294251.6U CN203377831U (en) | 2013-05-27 | 2013-05-27 | Frequency converter redundancy control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320294251.6U CN203377831U (en) | 2013-05-27 | 2013-05-27 | Frequency converter redundancy control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203377831U true CN203377831U (en) | 2014-01-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320294251.6U Expired - Lifetime CN203377831U (en) | 2013-05-27 | 2013-05-27 | Frequency converter redundancy control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203377831U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065318A (en) * | 2014-06-26 | 2014-09-24 | 中冶南方（武汉）自动化有限公司 | Frequency converter closed-loop vector redundancy control method during high-speed operation |
| CN106059262A (en) * | 2016-07-05 | 2016-10-26 | 沈阳远大电力电子科技有限公司 | High-reliability high-voltage frequency converter |
| CN109818486A (en) * | 2017-11-20 | 2019-05-28 | 维谛技术有限公司 | The hot redundancy control method of frequency converter and redundancy frequency-converter device |
| CN114114998A (en) * | 2021-11-05 | 2022-03-01 | 河北汉光重工有限责任公司 | Redundancy control system and method |
-
2013
- 2013-05-27 CN CN201320294251.6U patent/CN203377831U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065318A (en) * | 2014-06-26 | 2014-09-24 | 中冶南方（武汉）自动化有限公司 | Frequency converter closed-loop vector redundancy control method during high-speed operation |
| CN104065318B (en) * | 2014-06-26 | 2016-08-31 | 中冶南方（武汉）自动化有限公司 | A kind of converter closed-loop vector redundancy control method during high-speed cruising |
| CN106059262A (en) * | 2016-07-05 | 2016-10-26 | 沈阳远大电力电子科技有限公司 | High-reliability high-voltage frequency converter |
| CN109818486A (en) * | 2017-11-20 | 2019-05-28 | 维谛技术有限公司 | The hot redundancy control method of frequency converter and redundancy frequency-converter device |
| CN109818486B (en) * | 2017-11-20 | 2020-09-29 | 维谛技术有限公司 | Frequency converter thermal redundancy control method and redundancy frequency converter device |
| CN114114998A (en) * | 2021-11-05 | 2022-03-01 | 河北汉光重工有限责任公司 | Redundancy control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |