CN202084909U - High-voltage variable frequency device with open-phase protection function - Google Patents
High-voltage variable frequency device with open-phase protection function Download PDFInfo
- Publication number
- CN202084909U CN202084909U CN201120172438XU CN201120172438U CN202084909U CN 202084909 U CN202084909 U CN 202084909U CN 201120172438X U CN201120172438X U CN 201120172438XU CN 201120172438 U CN201120172438 U CN 201120172438U CN 202084909 U CN202084909 U CN 202084909U
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- cabinet
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- open
- phase
- variable frequency
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Abstract
The utility model discloses a high-voltage variable frequency device with open-phase protection function. The device comprises a bypass cabinet, a converter cabinet, a power cabinet and a control cabinet, wherein the bypass cabinet and the converter cabinet are connected with the power cabinet respectively, the power cabinet is connected with the control cabinet, a plurality of power units are arranged in the power cabinet, and open-phase protectors are arranged on the individual power units respectively. Since the open-phase protectors are arranged on the individual power units, the variable frequency device can give an alarm and protect a circuit in case of open phase on the output side of the variable frequency device or fuse cut-off of the power units, and can inform an operator about the device failure as well as the accurate location of the failure, so as to not only reduce the risk of severe device damage but also save operator's time and labor of detecting the failure.
Description
Technical field
The utility model relates to a kind of converter plant, specifically high voltage frequency converter.
Background technology
Converter plant VFD (Variable-frequency Drive) uses converter technique and microelectric technique, and the frequency by changing the machine operation power supply and the mode of amplitude are controlled the Electric Drive element of alternating current motor.Converter plant is integrated high-voltage high-power transistor technology and electron controls technology are used widely.The effect of converter plant is frequency and the amplitude that changes the alternating current machine power supply, thereby changes the cycle of its moving magnetic field, reaches the purpose of level and smooth control motor speed.The appearance of converter plant, make complicated speed regulating control oversimplify, with converter plant+mouse cage AC formula induction motor combination replacement the most of work that originally can only finish with direct current machine, dwindled volume, reduced maintenance rate, made drive technology develop into the new stage.Present high voltage frequency converter does not generally have phase-lacking protective device; when the input side of frequency converter falls the insurance fusible core of phase or power cell; equipment can can't normally move; the place but operating personnel can't search problem smoothly; must expend time in and manpower; and therefore equipment can not report to the police, if operating personnel can not find in time that equipment may suffer grievous injury.
The utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of can carry out the high voltage frequency converter that open-phase protection can reduce the equipment damage rate and can save time and effort for operating personnel's maintenance of equipment.
For achieving the above object; but technical solution adopted in the utility model is a kind of high voltage frequency converter of open-phase protection; comprise bypass cabinet, transformer case, power cabinet and control cubicle; wherein bypass cabinet and transformer case join with power cabinet respectively; power cabinet and control cubicle join; in power cabinet, be provided with some power cells, on each power cell, be equipped with phase-lacking protective device.
Described power cell has 27, and described phase-lacking protective device also has 27.
Beneficial effect: the utility model is owing to installed phase-lacking protective device on power cell; the outlet side of frequency converter is fallen mutually or during the insurance fusible core of power cell; equipment can give the alarm and circuit be protected; inform that in time operating personnel's equipment breaks down and staff's equipment of accurately informing specifically in what link breaks down; both reduce the serious risk of device damage, saved the time and efforts that operating personnel investigate problem again.
Description of drawings
Fig. 1 is the utility model structured flowchart.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, present embodiment is being to implement under the prerequisite with technical solutions of the utility model, should understand these embodiment only be used to the utility model is described and be not used in the restriction scope of the present utility model.
As shown in Figure 1; but a kind of high voltage frequency converter of open-phase protection; comprise bypass cabinet 1, transformer case 2, power cabinet 3 and control cubicle 4; wherein bypass cabinet 1 and transformer case 2 join with power cabinet 3 respectively; power cabinet 3 joins with control cubicle 4; in power cabinet 3, be provided with 27 power cells 5, on each power cell 5, be equipped with phase-lacking protective device 6.
Operation principle: when equipment operated, phase-lacking protective device is normal operation also.When the input side of frequency converter falls the insurance fusible core of phase or power cell; phase-lacking protective device sends warning immediately and circuit is protected; avoid it fortuitous events such as short circuit to occur; and operating personnel can learn immediately according to alarm that equipment breaks down and judges concrete which link and break down; saved the time and efforts of investigation fault; also can handle problem as early as possible, shorten maintenance time.
Claims (2)
1. but the high voltage frequency converter of an open-phase protection; comprise bypass cabinet (1), transformer case (2), power cabinet (3) and control cubicle (4); wherein bypass cabinet (1) and transformer case (2) join with power cabinet (3) respectively; power cabinet (3) joins with control cubicle (4); it is characterized in that: in power cabinet (3), be provided with some power cells (5), on each power cell (5), be equipped with phase-lacking protective device (6).
2. but according to the high voltage frequency converter of the described a kind of overtemperature protection of claim 1, it is characterized in that: described power cell (5) has 27, and described phase-lacking protective device (6) also has 27.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120172438XU CN202084909U (en) | 2011-05-26 | 2011-05-26 | High-voltage variable frequency device with open-phase protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120172438XU CN202084909U (en) | 2011-05-26 | 2011-05-26 | High-voltage variable frequency device with open-phase protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084909U true CN202084909U (en) | 2011-12-21 |
Family
ID=45345526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120172438XU Expired - Fee Related CN202084909U (en) | 2011-05-26 | 2011-05-26 | High-voltage variable frequency device with open-phase protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202084909U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901285A (en) * | 2014-02-27 | 2014-07-02 | 国电南京自动化股份有限公司 | Method for detecting cascading type high-voltage inverter power unit input default phase |
| CN105337477A (en) * | 2015-10-28 | 2016-02-17 | 北京国电四维清洁能源技术有限公司 | High-voltage inverter |
| US10116226B2 (en) | 2013-12-25 | 2018-10-30 | Abb Schweiz Ag | Multi-phase electric drive and method therefor to provide power to a power unit |
-
2011
- 2011-05-26 CN CN201120172438XU patent/CN202084909U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10116226B2 (en) | 2013-12-25 | 2018-10-30 | Abb Schweiz Ag | Multi-phase electric drive and method therefor to provide power to a power unit |
| CN103901285A (en) * | 2014-02-27 | 2014-07-02 | 国电南京自动化股份有限公司 | Method for detecting cascading type high-voltage inverter power unit input default phase |
| CN103901285B (en) * | 2014-02-27 | 2016-05-04 | 国电南京自动化股份有限公司 | A kind of detection method of cascaded high-voltage frequency converter power cell input phase failure |
| CN105337477A (en) * | 2015-10-28 | 2016-02-17 | 北京国电四维清洁能源技术有限公司 | High-voltage inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20140526 |