CN2588657Y - Intelligent static phase advancer - Google Patents
Intelligent static phase advancer Download PDFInfo
- Publication number
- CN2588657Y CN2588657Y CN 02252404 CN02252404U CN2588657Y CN 2588657 Y CN2588657 Y CN 2588657Y CN 02252404 CN02252404 CN 02252404 CN 02252404 U CN02252404 U CN 02252404U CN 2588657 Y CN2588657 Y CN 2588657Y
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- China
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- phase
- rotor
- wound
- phase advancer
- advancer
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- Expired - Fee Related
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Abstract
The utility model relates to an intelligent static phase advancer. A two-phase transformer secondary on a main circuit is connected with an AC-AC frequency converting circuit which is composed of twelve thyristors; six current-limiting reactors are connected with rotors of a wound-rotor motor through a contactor, so a single chip microcomputer dispatches triggering signals through a pulse power amplification circuit to trigger the thyristors to work. The utility model is characterized in that signals checked by the wound-rotor motor rotor and a stator current testing circuit are all sent by a photon coupled isolator into the single chip microcomputer for analysis and process; output display signals are displayed through digital or Chinese character displays. Thus, operating states, failure modes and operate prompts of the static phase advancer can be directly displayed out, so the phase advancer can be intelligentized in a certain degree, and be convenient for popularization and application of the static phase advancer.
Description
Technical field the utility model belongs to electrical technology field, particularly a kind of intelligent static formula phase advancer that is used for large power winding formula motor raising power factor.
The static phase generator that background technology is general, its circuit are all very complicated, control section except that controller, electric components such as also external synchrotrans, pulse amplifier plate, power transformer.Particularly do not have operating state and fault to show, make operating personnel's regular job and safeguard very inconvenient.
The summary of the invention the purpose of this utility model is exactly in order to overcome the deficiencies in the prior art, carries out the fault self-checking protection and with the intelligent static formula phase advancer of numeral or Chinese character display working condition and failure mode and provide a kind of.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of intelligent static formula phase advancer, secondary friendship one AC-AC frequency changer circuit that connects twelve earthly branches thyristor composition of its major loop two-phase transformer, and be connected through contactor with the wound-rotor motor rotor by six current limiting reactors, send triggering signal by single chip microcomputer and carry out work through pulse power amplifier triggering thyristor, it is characterized in that: the wound-rotor motor rotor, the detected signal of stator current testing circuit is all sent into single chip microcomputer by optical coupling isolator and is carried out analyzing and processing, and the shows signal of output shows through numeral or Chinese-character display.
Above-mentioned major loop output circuit adopts three-phase ac contactor to be connected with wound-rotor motor three-phase rotor and starting device of motor, numeral or Chinese-character display be installed on the controller panel or the phase advancer front door panel on.
Compared with prior art, the utility model has following characteristics:
1, advances almost to have comprised all control sections in the phase controller that the outside has only some signals collecting and switching circuit, has simplified peripheral circuit greatly.Make installation, use, maintenance work all more convenient;
2, adopt numeral or Chinese character to show the operating state and the fault of phase advancer, make operating personnel be convenient to operation and regular maintenance;
3, phase advancer major loop output circuit adopts three-phase ac contactor to be connected with starting device with wound-rotor motor three-phase rotor, has reduced the phase advancer cost, has simplified main circuit.
Description of drawings Fig. 1 is the electric principle schematic of intelligent static formula phase advancer.
Specific implementation as shown in Figure 1, thick black line is represented major loop, fine line representation signal and control loop are the controller internal circuit in the frame of broken lines.Secondary friendship-the AC-AC frequency changer circuit that connects twelve earthly branches thyristor S1～S12 composition of its major loop two-phase transformer T1, and the rotor by six current limiting reactor L1～L6 and wound-rotor motor M and starting device of motor QDQ are through three-phase ac contactor KM2, KM3 connects, send triggering signal by single chip microcomputer and carry out work through pulse power amplifier triggering thyristor, control circuit is with wound-rotor motor rotor current transducer LH1, LH2, LH3, stator current transducer LH0, the detected signal of over-current signal transducer LH4 is all sent into single chip microcomputer by optical coupling isolator and is carried out analyzing and processing, output shows signal show through numeral or Chinese-character display, numeral or Chinese-character display be installed on the controller panel or the phase advancer front door panel on.
From the next stator of wound-rotor motor, rotor current signal and the synchronizing signal of coming from major loop, over-current signal is all sent in the single chip microcomputer by the input optocoupler and is analyzed, relatively, judge, calculate, send major loop switching signal and thyristor trigger impulse by optocoupler then, simultaneously by the display display working condition, advancing numeral or Chinese-character display are installed on the phase controller panel, and be printed on numeral on digital display next door and show the explanation of representing meaning, if what adopt is the Chinese character display mode, then directly demonstrate such as " self check is normal; can advance phase " on the display with Chinese character, the operating state and the operation indicating of static phase generators such as " the rotor phase shortage please be checked wiring ".Numeral or Chinese-character display also can not be installed in on the phase controller panel, and are mounted on the front door panel of intelligent static formula phase advancer.Digital display then is printed on the numeral demonstration on its next door and represents meaning in this way.
The course of work of intelligent static formula phase advancer is such: controller carries out self check to thyristor and input, output circuit when start just, as finding that fault shows immediately, makes operating personnel be convenient to search fault.As fault-free next step operation sequence of alert then; Advance to advance the phase controller when back is normally moved mutually and checked that constantly fault-free takes place, send trigger impulse in order simultaneously, phase advancer is normally moved, and operating state is presented on the display at any time.So just make phase advancer have to a certain degree intellectuality, be convenient to it more and apply.
Claims (2)
1, a kind of intelligent static formula phase advancer, secondary friendship one AC-AC frequency changer circuit that connects twelve earthly branches thyristor composition of its major loop two-phase transformer, and be connected through contactor with the wound-rotor motor rotor by six current limiting reactors, send triggering signal by single chip microcomputer and carry out work through pulse power amplifier triggering thyristor, it is characterized in that: wound-rotor motor rotor, the detected signal of stator current testing circuit are all sent into single chip microcomputer by optical coupling isolator and are carried out analyzing and processing, and the shows signal of output shows through numeral or Chinese-character display.
2, intelligent static formula phase advancer according to claim 1, it is characterized in that: above-mentioned major loop output circuit adopts three-phase ac contactor to be connected with wound-rotor motor three-phase rotor and starting device of motor, numeral or Chinese-character display be installed on the controller panel or the phase advancer front door panel on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252404 CN2588657Y (en) | 2002-08-31 | 2002-08-31 | Intelligent static phase advancer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02252404 CN2588657Y (en) | 2002-08-31 | 2002-08-31 | Intelligent static phase advancer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588657Y true CN2588657Y (en) | 2003-11-26 |
Family
ID=33721907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02252404 Expired - Fee Related CN2588657Y (en) | 2002-08-31 | 2002-08-31 | Intelligent static phase advancer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588657Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426657C (en) * | 2006-12-22 | 2008-10-15 | 湘潭电机股份有限公司 | Fully digital dual-feedback speed-adjusting device of high-voltage motor |
-
2002
- 2002-08-31 CN CN 02252404 patent/CN2588657Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426657C (en) * | 2006-12-22 | 2008-10-15 | 湘潭电机股份有限公司 | Fully digital dual-feedback speed-adjusting device of high-voltage motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |