CN1087454A - Constant frequency type shaft generator unit peculiar to vessel - Google Patents
Constant frequency type shaft generator unit peculiar to vessel Download PDFInfo
- Publication number
- CN1087454A CN1087454A CN 92113597 CN92113597A CN1087454A CN 1087454 A CN1087454 A CN 1087454A CN 92113597 CN92113597 CN 92113597 CN 92113597 A CN92113597 A CN 92113597A CN 1087454 A CN1087454 A CN 1087454A
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- China
- Prior art keywords
- rotor
- exciter
- generator
- stator
- constant
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Abstract
The invention provides a kind of constant-frequency shaft generator set for ship.Characteristics of the present invention are to provide one to produce with rotor at rotor surface and to turn to equilibrium potential to anti-rotating magnetic field by exciter to the rotor of axle generator, the magnetic field of this and rotor reverse rotation, adjusted rotating speed for generator unit stator magnetic field, make it constant, thereby realize the purpose of constant frequency.
Description
Constant frequency type shaft generator unit peculiar to vessel belongs to boats and ships shaft generator device.
In the prior art, constant for retainer shaft band generator for electricity generation frequency need be taked some complicated technology measures, thereby cause the set structure complexity, and be bulky, the cost height, and maintenance is complicated, shortcomings such as failure rate height.The patent No. is the utility model patent of CN86202150: frequency compensation formula shaft generator device.A kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) that can keep constant frequency is provided, and its principle is to import the three-phase alternating current that a compensated dynamo produces to three phase windings of generator amature, makes rotor surface produce one and turns to identical rotating magnetic field with rotor.And guarantee that with control system when engine speed changes, compensated dynamo provides the rotating speed of rotating magnetic field that corresponding adjustment promptly takes place, guarantee that synthetic rotating magnetic field is constant for the rotating speed of stator, the purpose of realization constant frequency.Though this invention provides the constant frequency type generating set, unit equipment is more, and compensation control system is complicated.
It is less to the purpose of this invention is to provide a kind of equipment, and structure is the constant frequency type shaft generator unit of less complex again, overcomes the deficiencies in the prior art.
Technical scheme of the present invention is: put the constant frequency type that constitutes with constant speed motor shaft generator unit peculiar to vessel by axle band synchronous generator, exciter, lock quick-mounting, feature is: 1. the stator of exciter is one and is driven by marine main engine, with shaft generator machine rotor speed together, equidirectional rotation, the stator that number of pole-pairs equates with the number of pole-pairs of shaft generator machine rotor; 2. connect with star between exciter stator winding and the shaft generator machine rotor winding, in wiring, make the exciter stator winding be input to the direction of rotation and the switched in opposite of rotor itself of the rotating magnetic field that the equilibrium potential on the generator amature winding forms at rotor surface, B, the C two-phase commutation wiring in B, C two-phase and the rotor winding in the stator winding soon; 3. the rotor of exciter is put driving by constant speed motor by the lock quick-mounting, rotates with constant rotational speed.It is the Constant-Speed Unit that the rotating speed of an output shaft is not influenced by the load other factors that said lock quick-mounting is put, and can be that gear ratio is 1: 4 above worm reduction box.
The present invention realizes that the principle of constant frequency is: when exciter rotor by dc magnetizing, under constant speed motor drives with certain rotating speed (n
2) when doing the clockwise direction rotation, the exciter stator winding produces the equilibrium potential of three-phase rotation.Since the stator of exciter under the driving of marine main engine with certain rotating speed (n
1) do the clockwise direction rotation, and under the restriction that the lock quick-mounting is put, n
1＞n
2So for exciter stator, the rotating speed in magnetic field is n
1-n
2, the frequency f of the equilibrium potential of the three-phase rotation that produces on the stator
2For
f
2= (P
2(n
1-n
2))/60 ，
P in the formula
2Number of pole-pairs for exciter rotor.The winding of the winding of exciter stator and shaft generator machine rotor links, so equilibrium potential of exciter stator winding, to produce a rotating magnetic field on the surface of generator amature, in wiring, we can make the direction of rotation of this rotating magnetic field and the direction of rotation of generator amature, and the rotating speed of establishing this magnetic field is n
3, can draw n by f=pn/60
3=60f
2/ P
1, P in the formula
1Number of pole-pairs for generator amature.With f
2=P
2(n
1-n
2)/60 substitution following formula,
, P in the design
2=P
1, n then
3=(n
1-n
2).Because n
3With n
1Switched in opposite, so, for the rotating speed (n of the rotating magnetic field of shaft generator machine stator
4) be n
1-n
3, because n
3=n
1-n
2So, n
4=n
1-n
3=n
1-n
1+ n
2=n
2, promptly the magnetic field rotating speed for generator unit stator is a steady state value (n
2) be the rotating speed of exciter rotor.Generator for electricity generation frequency f=P
1N
2/ 60, because n
2Be steady state value,, realize the purpose of constant frequency, and be not subjected to the influence of engine speed so the generating frequency is constant.
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is the structural representation of embodiments of the invention 1.
Fig. 3 is the structural representation of embodiments of the invention 2.
Fig. 2 is an embodiment that exciter separates with generator, and the stator of axle generator (1) is made by silicon steel plate stacking, is wound with number of pole-pairs and is 3 three-phase equilibrium distributed winding.The rotor of generator (2) is made by silicon steel plate stacking, and outer surface has wire casing, studs with the three-phase equilibrium distributed winding in the groove, and number of pole-pairs is 3, and generator amature is driven by boss rod, rotates along clockwise direction.Exciter stator (3) is made by silicon steel plate stacking, studs with the three-phase equilibrium distributed winding in the wire casing, and number of pole-pairs is 3, and stator is fixed on the rigid frame, and framework is driven by the axle generator armature spindle, rotates synchronously with generator amature.The exciter stator winding is the magnet limbs that is become by silicon steel plate stacking with the rotor (4) of on line exciter shown in the circuit of Fig. 1 between the generator amature winding.Be wound with concentrated winding extremely, rotor is excitatory by slip ring by direct current.Initial start, excitation DC is provided by an external startup dc battery jar, when the marine main engine running, after axle generator enters operating state, change over switch cuts off external storage battery, and the alternating current that is provided by generator provides DC power supply to exciter after rectification, voltage stabilizing.Exciter rotor is driven by constant speed motor, puts (5) by the lock quick-mounting and makes it invariablenes turning speed, and it is that a gear ratio is 1: 4 a worm type of reduction gearing that the lock quick-mounting is put.
The present invention compared with prior art has following advantage:
1. a whole set of unit equipment is few, installs, debugs simply, and it is little to take up room;
2. the unit cost is lower;
3. the frequency of generating electricity is only relevant with the rotating speed of exciter rotor, and irrelevant with the rotating speed of marine main engine, convenient operation and control.
4. can bring into play to greatest extent the power of marine main engine.
Claims (2)
1, constant frequency type shaft generator unit peculiar to vessel, put with constant speed motor by axle generator, exciter, lock quick-mounting and to form, feature is: the stator of a, exciter is to be driven by marine main engine, fast together with the rotor of axle generator, equidirectional rotation, the stator that number of pole-pairs equates with the number of pole-pairs of shaft generator machine rotor; Connect with star between b, exciter stator winding and shaft generator machine rotor winding, in wiring, make the direction of rotation of the rotating magnetic field that the axle generator rotor surface forms and the switched in opposite of rotor itself; Be about to B, C two-phase commutation wiring in B, C two-phase and the rotor winding in the stator winding; C, exciter rotor are put driving by constant speed motor by the lock quick-mounting, rotate with constant speed.
2, according to the said constant frequency type of claim 1 shaft generator unit peculiar to vessel, it is characterized in that it is the permanent rotational speed devices that the rotating speed of an output shaft is not influenced by the other factors of load that said lock quick-mounting is put, can be that a gear ratio is 1: 4 above turbine and worm decelerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113597 CN1087454A (en) | 1992-11-25 | 1992-11-25 | Constant frequency type shaft generator unit peculiar to vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113597 CN1087454A (en) | 1992-11-25 | 1992-11-25 | Constant frequency type shaft generator unit peculiar to vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1087454A true CN1087454A (en) | 1994-06-01 |
Family
ID=4946500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92113597 Pending CN1087454A (en) | 1992-11-25 | 1992-11-25 | Constant frequency type shaft generator unit peculiar to vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1087454A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089662A1 (en) * | 2008-01-14 | 2009-07-23 | Guangshun Wang | Adaptive frequency-coincidence generator |
| CN101051779B (en) * | 2007-05-15 | 2010-06-16 | 天津市新源电气科技有限公司 | Winding type internal rotor brushless double feed generator and its control device |
| WO2010108342A1 (en) * | 2009-03-27 | 2010-09-30 | 华中科技大学 | Excitation control system for marine diesel brushless doubly fed shaft generator and control method thereof |
-
1992
- 1992-11-25 CN CN 92113597 patent/CN1087454A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051779B (en) * | 2007-05-15 | 2010-06-16 | 天津市新源电气科技有限公司 | Winding type internal rotor brushless double feed generator and its control device |
| WO2009089662A1 (en) * | 2008-01-14 | 2009-07-23 | Guangshun Wang | Adaptive frequency-coincidence generator |
| WO2010108342A1 (en) * | 2009-03-27 | 2010-09-30 | 华中科技大学 | Excitation control system for marine diesel brushless doubly fed shaft generator and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |