CN201197103Y - Protection type brushless excitation synchronous motor - Google Patents
Protection type brushless excitation synchronous motor Download PDFInfo
- Publication number
- CN201197103Y CN201197103Y CNU2008200531392U CN200820053139U CN201197103Y CN 201197103 Y CN201197103 Y CN 201197103Y CN U2008200531392 U CNU2008200531392 U CN U2008200531392U CN 200820053139 U CN200820053139 U CN 200820053139U CN 201197103 Y CN201197103 Y CN 201197103Y
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- exciter
- end cap
- motor
- synchronous motor
- stator
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Abstract
The utility model relates to a protective type brushless excitation synchronous motor. Aiming at solving the problems of a long rotating shaft and large size of the motor due to the separation of an exciting dynamo and a motor mainframe in the prior brushless synchronous motor, the utility model adopts a technical proposal that: in the brushless excitation synchronous motor, a stator of the exciting dynamo is embedded in a flange of a magnetic yoke of a rotor of the mainframe and rotates along the mainframe; a magnetic pole of the exciting dynamo is arranged on a convex cylinder of an end cover and is static; and a rotary rectification plate is arranged on a rotating shaft of a stander on the other end of the exciting dynamo. The brushless excitation synchronous motor changes the concept that in the prior alternating current motor, the stator is externally arranged and is static; and the rotor is internally arranged and is rotary; and the mainframe and the exciting dynamo of the brushless synchronous motor are combined into a whole, thereby greatly shortening the size of the motor, reducing the manufacturing cost and maintenance cost of the motor and improving the safety and reliability of the motor.
Description
Technical field
The utility model belongs to the synchronous motor technical field, is specifically related to a kind of protection type brushless excitation synchronous motor.
Background technology
General brushless excitation synchronous motor comprises motor main frame stator, rotor, support, support two ends end cap, axle and pedestal bearing, exciter, cooler and air blast, rotating rectifier dish and heater etc.This motor does not have carbon brush, the collector ring of conventional synchronization motor, the unsafe factor that spark brought that has produced when so just having eliminated operation; Do not have carbon brush promptly not have wear-out part, just cancelled maintenance works such as changing carbon brush, reconditioning collector ring; Carbon-free brush dust, thereby improved the cleannes of running environment and motor.Yet, present brushless synchronous motor, exciter is what to separate with the motor main frame, exciter rotor be installed on outside the main frame support the axle on, like this, two motors independently, add rectifying disc and de-excitation resistance, make machine shaft very long, it is very big that volume becomes, basic corresponding expansion is installed, the also corresponding increase of cost of investment.
Summary of the invention
The utility model provides a kind of protection type brushless excitation synchronous motor that motor main frame and exciter are integrated at the existing above-mentioned defective of existing brushless synchronous motor.
The utility model is to realize above-mentioned purpose by the following technical solutions: this protection type brushless excitation synchronous motor, comprise motor main frame stator, rotor, support, support two ends end cap, the pedestal bearing at axle and axle two ends, exciter is positioned at cooler and air blast, rectifying disc and the heater of upper part of the frame.Wherein, an end cap in two end caps is provided with internal diameter greater than axle radius, the external diameter dome tube less than main rotor yoke flange internal diameter in a side that is positioned at support.Exciter is installed on base inner, and promptly the exciter magnetic pole is installed on the excircle of dome tube end of end cap, and exciter stator then is nested in the main rotor yoke flange of answering with the exciter pole pair, and exciter field and the mutually noninterfere of main frame magnetic field; Described rectifying disc is that rectification module and de-excitation resistance are installed in the same disk body, and this disk body is installed in the rotating shaft in the support of the exciter other end.
Can be more particularly, two end caps are dissection type, promptly are divided into two halves up and down, and are provided with inspection hole, and the two halves up and down of end cap adopt bolt to connect, and the place is provided with sealing device at axis hole; The end cap that the exciter magnetic pole is installed is positioned at load end, and described dome tube is a cylinder of cutting to end cap one skew back, and scarf and end cap face form an acute angle, and the cylinder of cutting sth. askew adopts the mode of welding to be connected on the Lower Half end cap.
The utility model has changed that the alternating current machine stator of traditional sense is external, transfixion and rotor is built-in, the notion of rotation, exciter stator is nested on the main rotor yoke, rotate with main frame, exciter rotor then is fixed on the tube of the protruding garden of an end cap, like this, motor main frame and exciter are integrated, and exciter field and the mutually noninterfere of main frame magnetic field.Behind synchronous motor main frame asynchronous starting, the D.C. magnetic field that exciter rotatable stator three phase windings cutting excitation winding is set up, and the three-phase alternating current electromotive force of inducting, alternating current is by coaxial rectifying disc, the direct current that amplifies several times after the rectification is supplied with the main frame excitation, like this, only need the very little direct current (generally being no more than 30A) of input, just can control the running status of whole motor easily.
The utility model is integrated motor main frame and exciter, has dwindled motor volume greatly, has reduced the manufacturing and the maintenance cost of motor, the fail safe that has improved motor, reliability.Volume is little, the degree of protection advantages of higher because of it has, so this motor is adapted to the industry that chemical industry, mine etc. have higher requirements to running environment especially.
Description of drawings
Fig. 1 is the general assembly drawing of the utility model embodiment;
Fig. 2 is a middle cutaway view of being with the end cap of the cylinder of cutting sth. askew embodiment illustrated in fig. 1;
Fig. 3 be embodiment illustrated in fig. 1 in exciter stator fanning strip fold into the structural representation of special body;
Fig. 4 is the coil windings figure of middle exciter stator embodiment illustrated in fig. 1;
Fig. 5 is a middle system controlled by computer excitation system rotating excitation part electrical schematic diagram embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Referring to Fig. 1, this brushless excitation synchronous motor comprises motor main frame stator 1, rotor 2, support 3, the end cap 4 at support two ends and end cap 5, the nonisulated pedestal bearing 7 at axle 6 and axle two ends and insulation pedestal bearing 8, exciter stator 9 and magnetic pole 10 are positioned at the cooler 11 of upper part of the frame and are installed on the air blast 12 of unload side, rectifying disc 13.Left end is that the end cap 4 of load end is provided with internal diameter greater than axle radius, the external diameter cylinder 15 of cutting sth. askew less than the flange internal diameter of main rotor yoke 14 in a side that is positioned at support.Exciter is installed on base inner, and promptly exciter magnetic pole 10 is installed on the excircle of cylinder 15 ends of cutting sth. askew of end cap, and 9 of exciter stators are nested in the flange of the main rotor yoke 14 corresponding with exciter, exciter field and the mutually noninterfere of main frame magnetic field.Rectifying disc 13 is that rectification module and de-excitation resistance are installed in the same disk body, and this disk body is installed in the rotating shaft in the support of the exciter other end.
In conjunction with Fig. 1 and Fig. 2, end cap 4 and end cap 5 are dissection type, promptly are divided into two halves up and down, and the two halves up and down of end cap adopt bolt to connect.The cylinder 15 of cutting sth. askew adopts the mode of welding to be connected on the Lower Half of end cap 4, and is provided with five brace rods below the cylinder 15 of cutting sth. askew, and first lid mainly seals, and lid is thin; Second lid is thick, is used for supporting the static rotor of exciter and can supports main rotor when assembling.The end cap up and down of two end caps all has inspection hole, can observe motor internal easily from different orientation, and end cover surface is provided with radial reinforcement.End cap and support are pin location, promptly be matched in clearance between the two, can solve the assembling inconvenience that two air gaps of main frame and exciter bring like this, do not allow main rotor weight all be pressed on the exciter stator when making assembling and the damage exciter stator.The axis hole place of end cap is provided with sealing device, also is provided with exciter terminal box and landing test installing hole on the end cap.
The wind hole that has different sizes and quantity on support and the skeleton dividing plate, so that the reasonable distribution air quantity, central dividing plate exhaust vent area has only half of outlet air end wind hole area.
The support bottom also has the adpting flange of plate with cover, promptly is convenient to maintenance, again can external air pipe etc.Also be furnished with stator thermometric and heater outlet box on the support.
Exciter stator 9 is installed in the special body, and the cover body structure as shown in Figure 3.After stator sector piece is folded in the cover, the rule dipping lacquer, in aggregates.The boring earlier of this cover, circle in the reprocessing is so that screw rod fixed stator iron core.The body outer rim has ten degree guide angles, so that be pressed into main rotor yoke 14.Referring to Fig. 4, the three-phase alternating current winding of exciter stator is that tandem multiply multiturn mush coil lap winding is formed, and even the main line circle turns to one continuously, is characterized in that also a solder joint is few, can reduce labour intensity greatly.
Exciter rotor is static salient-pole structure, and magnetic pole 10 is installed on the cylinder 15 of cutting sth. askew of second end cap of end cap 4, and the Lower Half of the cylinder 15 of cutting sth. askew has some wind hole, and the cylinder end face of cutting sth. askew is equipped with dissection type barge board 18.This structure promptly is convenient to match with second lid, and weight reduction again is beneficial to installation, is convenient to adjust air gap and ventilation and heat.
Described cooler 11 is single core water cooler, circulation axis was to draft type in motor adopted, be that the motor internal hot blast moves vertically, the one tunnel walks the main frame interpolar, and one the tunnel through the rotor air gap, one the tunnel passes the stator core skeleton after entering stator core, other one the tunnel then at first cools off rectifying disc, by rotor yoke, passes the exciter rotor again, this four road hot blast is aggregated into the other end of rotor, enters water cooler at last.85% cooling air is axially blown over via main frame stator and rotor gap, and 15% air quantity then cools off exciter and rectifying disc.The main frame stator core is non-equal portions segmentation, and down wind successively decreases.
Referring to Fig. 5, it is the system controlled by computer excitation system rotating excitation part electrical schematic diagram of motor, this excitation system major loop adopts the three-phase half controlled bridge formula major loop mode of connection (non-phased approach), compares with other major loop mode of connection, and its advantage is mainly reflected in: (1) major loop is more succinct.(2) cancel DC loop that numerous excitation producer adopts and thrown and encourage the control silicon controlled main rectifier, avoided the silicon controlled main rectifier problems of excessive heat that causes greatly owing to the DC side electric current.(3) adopt the half-controlled bridge type major loop, also avoided damage, cause the magnet loss phenomenon of motor, and any one (PCC) power damage can not cause motor loss of excitation immediately owing to silicon controlled main rectifier.
Claims (5)
1. protection type brushless excitation synchronous motor, comprise motor main frame stator, rotor, support, support two ends end cap, the pedestal bearing at axle and axle two ends, exciter, be positioned at the cooler and the air blast of upper part of the frame, rectifying disc and heater, it is characterized in that: an end cap in two end caps is provided with internal diameter greater than the axle radius in a side that is positioned at support, external diameter is less than the dome tube of main rotor yoke flange internal diameter, described exciter is installed on base inner, be on the excircle of the exciter magnetic pole dome tube end that is installed in end cap, exciter stator then is nested in the main rotor yoke flange of answering with the exciter pole pair, and exciter field and the mutually noninterfere of main frame magnetic field; Described rectifying disc is that rectification module and de-excitation resistance are installed in the same disk body, and this disk body is installed in the rotating shaft in the support of the exciter other end.
2. protection type brushless excitation synchronous motor according to claim 1 is characterized in that: two end caps are dissection type, promptly are divided into two halves up and down, and are provided with inspection hole, and the two halves up and down of end cap adopt bolt to connect, and the place is provided with sealing device at axis hole; The end cap that the exciter magnetic pole is installed is positioned at load end, and described dome tube is a cylinder of cutting to end cap one skew back, and scarf and end cap face form an acute angle, and the cylinder of cutting sth. askew adopts the mode of welding to be connected on the Lower Half end cap.
3. protection type brushless excitation synchronous motor according to claim 1 and 2, it is characterized in that: described exciter magnetic pole is a salient-pole structure, the three-phase alternating current winding of exciter stator is that tandem multiply multiturn mush coil lap winding is formed, and even the main line circle turns to one continuously; Main rotor is a salient-pole structure.
4. protection type brushless excitation synchronous motor according to claim 3 is characterized in that: described cooler is single core water cooler, and air blast is installed on the unload side of support; At main rotor yoke ventilation hole end face adjustable deep bead is housed, the end cap cylinder end face of cutting sth. askew is equipped with the releasable deep bead, and the cylinder bottom of cutting sth. askew is provided with some ventilation holes.
5. protection type brushless excitation synchronous motor according to claim 4 is characterized in that: the system controlled by computer excitation system rotating excitation electric part of motor adopts the three-phase half controlled bridge formula major loop mode of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200531392U CN201197103Y (en) | 2008-05-10 | 2008-05-10 | Protection type brushless excitation synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200531392U CN201197103Y (en) | 2008-05-10 | 2008-05-10 | Protection type brushless excitation synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201197103Y true CN201197103Y (en) | 2009-02-18 |
Family
ID=40416731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200531392U Expired - Lifetime CN201197103Y (en) | 2008-05-10 | 2008-05-10 | Protection type brushless excitation synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201197103Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507643A (en) * | 2011-11-21 | 2012-06-20 | 哈尔滨电机厂有限责任公司 | Ventilating and temperature increasing test device for giant fully-air cooling hydraulic generator stator |
-
2008
- 2008-05-10 CN CNU2008200531392U patent/CN201197103Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507643A (en) * | 2011-11-21 | 2012-06-20 | 哈尔滨电机厂有限责任公司 | Ventilating and temperature increasing test device for giant fully-air cooling hydraulic generator stator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090218 Effective date of abandoning: 20080510 |