CN203554272U - Double-path control circuit of high-frequency frequency converter - Google Patents
Double-path control circuit of high-frequency frequency converter Download PDFInfo
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- CN203554272U CN203554272U CN201320664385.2U CN201320664385U CN203554272U CN 203554272 U CN203554272 U CN 203554272U CN 201320664385 U CN201320664385 U CN 201320664385U CN 203554272 U CN203554272 U CN 203554272U
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- control circuit
- power supply
- frequency converter
- way control
- switching
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Abstract
The utility model discloses a double-path control circuit of a high-frequency frequency converter. The circuit includes two paths of control circuits which are connected with two power supplies respectively. The two paths of control circuits are connected with a frequency converter through a redundancy module. The redundancy module includes two diodes which are connected in parallel. A positive pole of each diode is connected with one path of control circuit respectively. Negative poles of the two diodes are connected with the frequency converter after being connected. Through the redundancy module which is formed through combination of the two diodes connected in parallel, uninterrupted switching of the two paths of the power supplies is realized and no switch device is needed for switching and no UPS emergency power supply is needed in the whole process so that the control process is simple and zero-time switching between the two paths of the control power supplies is realized. Therefore, system stability is increased significantly on the premise that cost is reduced and the circuit is high in usability.
Description
Technical field
The utility model relates to the frequency converter field in electric power transfer, particularly a kind of two-way control circuit of high-frequency converter.
Background technology
High voltage converter, as high-voltage motor speed regulating device, is widely used in, on the heavy-duty motors such as blower fan, water pump, playing the part of aborning important role.
PWM Generator High Voltage Inverter Control System is high to reliability requirement, therefore adopts double loop power supply standby supply power mode each other.
In traditional technical scheme, double loop power supply switches to be realized by relay and contactor, and traditional control circuit must first guarantee that a road closes that have no progeny could closed back-up circuit, therefore there is switching time in this process, also be of short duration power process, now must guarantee the not power down of power process control loop by UPS, control circuit number of devices is many, thereby control logic is complicated, cause poor stability, increased on the other hand cost.
Utility model content
The utility model object is to overcome prior art defect, and the two-way control circuit that a kind of stability is high, control simple high-frequency converter is provided.
For achieving the above object, the utility model adopts following scheme:
The two-way control circuit of high-frequency converter, comprises the two-way control circuit being connected respectively with two power supplys, and two-way control circuit is connected with frequency converter by redundant module; Described redundant module comprises two diodes in parallel, and each diode cathode is connected with difference Yu Yi road control circuit, after two diode cathodes are connected, is connected with frequency converter.
Described control circuit comprises the circuit breaker, impulse train inhibitor, filter and the Switching Power Supply that connect successively, and described circuit breaker is connected with power supply, and described Switching Power Supply is connected with redundant module.
Described Switching Power Supply is that 220V alternating current turns 24V DC power supply.
Described power supply, for the power supply that the phase shifting transformer that is connected with electrical network and user scene provide, is connected with lightning arrester between the power supply that user scene provides and control circuit
Compare traditional technical scheme, the utility model is realized switching without interrupting of two-way power supply by the redundant module of two diode compositions in parallel, whole process is without switching and UPS stand-by power supply by switching device, control procedure is simple, realize the switching of two-way control power supply zero-time, the stability that has greatly strengthened system under the prerequisite reducing costs, ease for use is strong.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model;
Fig. 2 is redundant module structural representation of the present utility model.
Embodiment
For clearly demonstrating the technical scheme in the utility model, provide preferred embodiment below and be described with reference to the accompanying drawings.
As shown in Figure 1, this control loop system adopts two-way 220V power supply, the two-way control circuit of high-frequency converter comprises respectively the two-way control circuit with phase shifting transformer and user's joint connection in site, the control circuit being connected with phase shifting transformer comprises the circuit breaker DL31 connecting successively, impulse train inhibitor MCQ1, filter FILT1, Switching Power Supply POW1, the control circuit being connected with user's side comprises the circuit breaker DL32 connecting successively, impulse train inhibitor MCQ2, filter FILT2, Switching Power Supply POW2, between circuit breaker DL32 and user's side power supply, be also connected with lightning arrester F1, F2, Switching Power Supply POW1, POW2 are AC 220V/DC 24V composition (alternating current 220V changes direct current 24V into), and two-way control circuit access redundant module is powered to control system.
As shown in Figure 2, redundant module is mainly comprised of two diodes in parallel, the control circuit being connected with phase shifting transformer connects No. 1 pin of diode, the control circuit being connected with user's side connects No. 2 pins of diode, after two diode cathodes connect, form No. 3 pins, No. 3 pin is used for connecting frequency converter.
The known diode of operating characteristic by diode self bears forward voltage drop conducting, oppositely cut-off, when the output voltage of No. 1 pin is greater than the output voltage of No. 2 pins, No. 1 automatic conducting of pin, No. 2 pin automatic cut-offs, also the control loop that closure is connected with phase shifting transformer, disconnects the closed-loop path being connected with user's side.Otherwise in like manner, when the output voltage of No. 2 pins is greater than the output voltage of No. 1 pin, No. 2 automatic conductings of pin, No. 1 pin automatic cut-off, also disconnect the control loop being connected with phase shifting transformer, the closed control loop being connected with user's side.Module can realize hot redundancy, therefore can realize unperturbed and automatically switch.Whole process, without switching and UPS stand-by power supply by switching device, realizes the switching of two-way control power supply zero-time.
For the control circuit of setting forth in the utility model embodiment, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (4)
1. the two-way control circuit of high-frequency converter, is characterized in that: comprise the two-way control circuit being connected respectively with two power supplys, two-way control circuit is connected with frequency converter by redundant module; Described redundant module comprises two diodes in parallel, and each diode cathode is connected with difference Yu Yi road control circuit, after two diode cathodes are connected, is connected with frequency converter.
2. two-way control circuit according to claim 1, it is characterized in that: described control circuit comprises the circuit breaker, impulse train inhibitor, filter and the Switching Power Supply that connect successively, described circuit breaker is connected with power supply, and described Switching Power Supply is connected with redundant module.
3. two-way control circuit according to claim 2, is characterized in that: described Switching Power Supply is that 220V alternating current turns 24V DC power supply.
4. according to the two-way control circuit described in claim 1-3 any one, it is characterized in that: described power supply, for the power supply that the phase shifting transformer that is connected with electrical network and user scene provide, is connected with lightning arrester between the power supply that user scene provides and control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664385.2U CN203554272U (en) | 2013-10-25 | 2013-10-25 | Double-path control circuit of high-frequency frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664385.2U CN203554272U (en) | 2013-10-25 | 2013-10-25 | Double-path control circuit of high-frequency frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203554272U true CN203554272U (en) | 2014-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320664385.2U Expired - Fee Related CN203554272U (en) | 2013-10-25 | 2013-10-25 | Double-path control circuit of high-frequency frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203554272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932572A (en) * | 2019-11-08 | 2020-03-27 | 国网冀北电力有限公司张家口供电公司 | Direct current power supply circuit and system |
-
2013
- 2013-10-25 CN CN201320664385.2U patent/CN203554272U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932572A (en) * | 2019-11-08 | 2020-03-27 | 国网冀北电力有限公司张家口供电公司 | Direct current power supply circuit and system |
| CN110932572B (en) * | 2019-11-08 | 2023-04-07 | 国网冀北电力有限公司张家口供电公司 | Direct current power supply circuit and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20201025 |