CN202059324U - Starting device of frequency converter - Google Patents
Starting device of frequency converter Download PDFInfo
- Publication number
- CN202059324U CN202059324U CN2011201570729U CN201120157072U CN202059324U CN 202059324 U CN202059324 U CN 202059324U CN 2011201570729 U CN2011201570729 U CN 2011201570729U CN 201120157072 U CN201120157072 U CN 201120157072U CN 202059324 U CN202059324 U CN 202059324U
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- China
- Prior art keywords
- soft start
- frequency converter
- control switch
- negative pole
- start controller
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to a starting device of a frequency converter with a soft start function, which comprises a main circuit of the frequency converter, a control circuit and a soft start controller. A second control switch and a soft start signal output control switch are further arranged in the soft start controller, the soft start controller is connected with the main circuit of the frequency converter through a positive input end, a positive output end and an input and output negative common earth end, the soft start controller is connected with the control circuit through a positive charging terminal, a negative charging terminal and a pair of delay output terminals.
Description
Technical field
The utility model relates to a kind of frequency converter brake apparatus, particularly about a kind of frequency converter starting drive that has soft start function.
Background technology
It shown in the accompanying drawing 1 structural representation of a kind of emergency power system of the prior art (EPS:EmergencyPowerSupply) special converter, comprise DC power supply 10, batteries 11, frequency converter 12, coil 13, the first control switch K1, close circuit breaker SQ1 and electromagnetic contactor KM1, wherein frequency converter 12 has anodal P and negative pole N.Frequency converter 12 is coupled to batteries 11 by close circuit breaker SQ1 and electromagnetic contactor KM1, coil 13 be connected with DC power supply 10 by the first control switch K1, coil 13 also further is coupled with electromagnetic contactor KM1, to realize the control to electromagnetic contactor KM1.
Frequency converter shown in the accompanying drawing 1 is when starting, and at first close circuit breaker SQ1 controls the break-make of electromagnetic contactor KM1 then by the first control switch K1 and coil 13, thereby realizes the startup of frequency converter and stop.
But have buffer circuit in behind this Starting mode requirement frequency changer direct current bus.Otherwise, in the moment of contactor KM1 adhesive, will produce very big rush of current, gently then circuit breaker SQ1 tripping operation, heavy then can burn circuit and equipment.Unless select to surpass the jumbo circuit breaker and the electromagnetic contactor of specified several times, bear the impulse current when starting.Especially for the machine more than the 110kW,, do not have buffer circuit behind the dc bus, can't realize that promptly AC/DC powers simultaneously, also can't realize time sharing power supply because of the main line reasons in structure.If the frequency converter main line is changed, research and development drop into bigger, and the cost of frequency converter also can rise.
The utility model content
Technical problem to be solved in the utility model is, a kind of frequency converter starting drive that has soft start function is provided, and can realize the soft start of frequency converter under situation about the frequency converter main line not being changed.
In order to address the above problem, the utility model provides a kind of frequency converter starting drive that has soft start function, comprises main circuit of converter, control circuit and soft start controller; In soft start controller, further be built-in with second control switch and soft start output signal control switch; Soft start controller is by electrode input end, and the negative pole of cathode output end and input and output is held altogether with main circuit of converter and is connected, and soft start controller is by anodal charging terminal and negative pole charging terminal, and a pair of time-delay lead-out terminal is connected with control circuit.
As optional technical scheme, described device further comprises frequency converter, close circuit breaker, electromagnetic contactor, batteries, coil and first control switch, soft start output signal control switch and DC power supply, and frequency converter is connected with close circuit breaker, electromagnetic contactor and batteries and constituted the closed-loop path of main circuit of converter; Coil is connected with first control switch, soft start output signal control switch and DC power supply and is constituted the closed-loop path of control circuit; Coil also further is coupled with electromagnetic contactor, to realize the control to electromagnetic contactor; Frequency converter has positive pole and negative pole.
As optional technical scheme, the cathode output end of soft start controller is connected between the positive pole and first control switch of frequency converter, electrode input end is connected to first control switch and anodal relative end frequency converter, and negative pole is held the negative pole that is connected to frequency converter altogether.
As optional technical scheme, anodal charging terminal and negative pole charging terminal are connected with the two ends of built-in second control switch respectively, and a pair of time-delay lead-out terminal is connected with built-in soft start output signal control switch respectively.
Advantage of the present utility model is, the described device of this embodiment of arranging in pairs or groups no matter after the input of EPS special converter direct current whether buffer circuit is arranged, can realize that all direct current starts; The other industry frequency converter can realize that also direct current starts, and every capacitive apparatus, this device of all can arranging in pairs or groups carry out direct current and start; Other device no currents are impacted, can prolong frequency converter useful life; Volume is little, and is easy for installation, low price.
Description of drawings
It shown in the accompanying drawing 1 structural representation of a kind of emergency power system special converter of the prior art.
It shown in the accompanying drawing 2 structural representation of the described frequency converter starting drive of the utility model embodiment.
Embodiment
The embodiment of the frequency converter starting drive that the utility model is provided below in conjunction with accompanying drawing elaborates.
Be the structural representation of the described frequency converter starting drive of the utility model embodiment shown in the accompanying drawing 2, comprise DC power supply 10, batteries 11, frequency converter 12, coil 13, soft start controller 20, the first control switch K1, close circuit breaker SQ1 and electromagnetic contactor KM1.In soft start controller 20, further be built-in with the second control switch K2 and soft start output signal control switch S2.Wherein frequency converter 12 has anodal P and negative pole N.
The port that soft start controller 20 is connected with main circuit of converter has electrode input end Pi, the negative pole of cathode output end Po and input and output is held NCOM altogether, the port relevant with control circuit has anodal charging terminal MI and negative pole charging terminal CO, a pair of time-delay lead-out terminal RA and RC.
The cathode output end Po of soft start controller 20 is connected between the anodal P and the first control switch K1 of frequency converter 12, electrode input end Pi is connected to an end relative with anodal P frequency converter 12 the first control switch K1, and negative pole holds NCOM to be connected to the negative pole N of frequency converter 12 altogether.Anodal charging terminal MI and negative pole charging terminal CO are connected with the two ends of the built-in second control switch K2 respectively, and a pair of time-delay lead-out terminal RA and RC are connected with built-in soft start output signal control switch S2 respectively.
The start-up course of accompanying drawing 2 shown devices is as follows: when needs batteries 11 inputs or emergency service, the closure signal of host computer/user (not shown) output second control switch K2, after soft start controller 20 receives the closure signal of the second control switch K2, soft start controller 20 starts, batteries 11 is by 12 chargings of 20 pairs of frequency converters of soft start controller, and judge when batteries 11 and frequency converter 12 both positive and negative polarity voltage differences are worth less than certain, soft start controller 20 output control signals make soft start output signal control switch S2 closure, thereby closing coil 13, make the electromagnetic contactor KM1 closing of contact, finish soft start.
The cutting-off process of accompanying drawing 2 shown devices is as follows: when needs cut off batteries 11, the cut-off signal of host computer/user (not shown) output second control switch K2, after soft start controller 20 receives the second control switch K2 cut-off signal, disconnect soft start output signal control switch S2 immediately, thereby cut off coil 13, electromagnetic contactor KM1 contact is disconnected, finish cut-out.
The advantage of said apparatus is, the described device of this embodiment of arranging in pairs or groups no matter after the input of EPS special converter direct current whether buffer circuit is arranged, can realize that all direct current starts; The other industry frequency converter can realize that also direct current starts, and every capacitive apparatus, this device of all can arranging in pairs or groups carry out direct current and start; Other device no currents are impacted, can prolong frequency converter useful life; Volume is little, and is easy for installation, low price.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. a frequency converter starting drive that has soft start function is characterized in that, comprises main circuit of converter, control circuit and soft start controller; In soft start controller, further be built-in with second control switch and soft start output signal control switch; Soft start controller is by electrode input end, and the negative pole of cathode output end and input and output is held altogether with main circuit of converter and is connected, and soft start controller is by anodal charging terminal and negative pole charging terminal, and a pair of time-delay lead-out terminal is connected with control circuit.
2. the frequency converter starting drive that has soft start function according to claim 1, it is characterized in that, described device further comprises frequency converter, close circuit breaker, electromagnetic contactor, batteries, coil, first control switch, soft start output signal control switch and DC power supply, and frequency converter is connected with close circuit breaker, electromagnetic contactor and batteries and constituted the closed-loop path of main circuit of converter; Coil is connected with first control switch, soft start output signal control switch and DC power supply and is constituted the closed-loop path of control circuit; Coil also further is coupled with electromagnetic contactor; Frequency converter has positive pole and negative pole.
3. the frequency converter starting drive that has soft start function according to claim 2, it is characterized in that, the cathode output end of soft start controller is connected between the positive pole and first control switch of frequency converter, electrode input end is connected to first control switch and anodal relative end frequency converter, and negative pole is held the negative pole that is connected to frequency converter altogether.
4. the frequency converter starting drive that has soft start function according to claim 2, it is characterized in that, anodal charging terminal and negative pole charging terminal are connected with the two ends of built-in second control switch respectively, and a pair of time-delay lead-out terminal is connected with built-in soft start output signal control switch respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201570729U CN202059324U (en) | 2011-05-17 | 2011-05-17 | Starting device of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201570729U CN202059324U (en) | 2011-05-17 | 2011-05-17 | Starting device of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202059324U true CN202059324U (en) | 2011-11-30 |
Family
ID=45019287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201570729U Expired - Lifetime CN202059324U (en) | 2011-05-17 | 2011-05-17 | Starting device of frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202059324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423143A (en) * | 2013-09-10 | 2013-12-04 | 镇江市欧菱电气自动化系统设备有限公司 | Patrol control device of large-scale sewage pump set of municipal drainage pipeline network |
-
2011
- 2011-05-17 CN CN2011201570729U patent/CN202059324U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423143A (en) * | 2013-09-10 | 2013-12-04 | 镇江市欧菱电气自动化系统设备有限公司 | Patrol control device of large-scale sewage pump set of municipal drainage pipeline network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHONGDA ELECTRONIC COMPONENTS (WUJIANG) CO., LTD. Free format text: FORMER OWNER: ZHONGDA PHOTOELECTRIC INDUSTRIAL (WUJIANG) CO., LTD. Effective date: 20150906 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150906 Address after: 215200, 1688 East Road, Wujiang Economic Development Zone, Suzhou, Jiangsu Patentee after: Zhongda Electronic Components (Wujiang) Co., Ltd. Address before: 215200, 1688 East Road, Wujiang Economic Development Zone, Suzhou, Jiangsu Patentee before: Zhongda Photoelectric Industry (Wujiang) Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20210106 Address after: 215200 no.1688, Jiangxing East Road, Wujiang Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee after: Delta Electronics (Jiangsu) Ltd. Address before: 215200 no.1688, Jiangxing East Road, Wujiang Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: DELTA ELECTRONICS COMPONENTS (WUJIANG) Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |
|
| CX01 | Expiry of patent term |