CN207251414U - Wide speed brushless generator - Google Patents
Wide speed brushless generator Download PDFInfo
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- CN207251414U CN207251414U CN201720417079.7U CN201720417079U CN207251414U CN 207251414 U CN207251414 U CN 207251414U CN 201720417079 U CN201720417079 U CN 201720417079U CN 207251414 U CN207251414 U CN 207251414U
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- generator
- brushless
- rectifier
- rotary transformer
- rotary
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Abstract
The utility model provides a kind of wide fast brushless generator, it is mainly made of rotary pole formula synchronous generator, silicon rectifier, pulse (or switch) adjuster, rotary transformer, rotating rectifier etc..Rotary pole formula synchronous generator exports alternating current, and direct current is exported by silicon rectifier.Pulse (or switch) adjuster exports the height of DC voltage according to silicon rectifier, to the adjustable pulse of rotary transformer output duty cycle, in the secondary generation mutual induction electromotive force of rotary transformer, rotated rectifier becomes direct current again, the Exciting Windings for Transverse Differential Protection of rotary pole formula synchronous generator is added in, realizes brushless excitation.Wide speed brushless generator has the advantages that low speed is good (zero amp frequency is low), and the range of speeds is wide, and volume, weight are smaller, and cost is relatively low.
Description
Technical field
The present invention relates to a kind of silicon rectifying brushless alternating current generator, belongs to electric motor of automobile field.
Background technology
Alternator for vehicle is the main power source of motor vehicles, and comfortable safety is driven to vehicle and is of great importance.Existing car
Be substantially brush silicon rectification AC generator with generator, due to being sliding contact between brush, slip ring, necessarily cause friction,
Abrasion, and have resistance heat, electric spark between electric brush slip ring, therefore cannot be too high in the presence of such as rotating speed, discomfort should have dust, extreme tide
Wet, extreme temperature environment, height above sea level is also restricted, and the graphite powder under wearing destroys insulation life, and brush wear is to necessarily
Degree electrical power generators are unstable or do not generate electricity, the insurmountable problems such as maintenance capacity is big.
In order to avoid the above problem of brush, slip ring, brushless AC generator comes into being.But existing brushless ac
Generator：Lundell, exciter formula, magneto and inductor type, because reasons in structure also has deficiency compared with brushing hair motor：It is low
Speed is poor (zero amp frequency is high), and the range of speeds is small, and volume, weight are larger, and cost is higher.Following table is existing brushless ac power generation
Machine there are the problem of.
The present invention provides a kind of brushless AC generator, it has low speed good (zero amp frequency is low), can run at high speed,
The advantages that volume, weight are smaller, and cost is relatively low.
The content of the invention
The present invention so reaches above-mentioned purpose：Brush, slip ring is replaced to realize non-connect using rotary transformer, rotating rectifier
Touch and transmit exciting current.
Wide speed brushless generator is mainly by rotary pole formula synchronous generator 1, rotary transformer 2, rotating rectifier 3, arteries and veins
Punching (or switch) adjuster 5, silicon rectifier 4, electric appliance cover 6 etc. is formed, and sees attached drawing 1,2.Primary iron core (the magnetic of rotary transformer 2
Core) it is fixed on electric motor end cap, armature winding is connected with the output of pulse (or switch) adjuster；Rotary transformer secondary iron
Core, winding and rotating rectifier are fixed on motor shaft and rotate together.
Rotary transformer 2, rotating rectifier 3, pulse (or switch) adjuster 5 form brushless excitation system；Pulse (or open
Closing) according to the height of silicon rectifier output DC voltage, the pulse different to rotary transformer output duty cycle, is revolving adjuster
Turn transformer secondary output and produce electromotive force, then rotated rectifier becomes direct current, is added in the Exciting Windings for Transverse Differential Protection of synchronous alternating-current generator, it is real
Existing brushless excitation；Synchronous generator exports alternating current, and direct current is exported by silicon rectifier.Attached drawing 3 is wide fast brushless generator
Electrical block diagram.
The impulse regulator of brushless excitation system, rotary transformer, rotating rectifier combination are either monofocal：
Positive activation type, inverse-excitation type or double-end type：Push-pull type, bridge-type.
Rotary transformer uses the pole structure (attached drawing 4) of radial air gap, can also stablize even if some axial small plays
Work.
Heat dissipation hole slot, wire lead slot are set on the magnetic core of rotary transformer, and easy for installation, reliability improves.
It is of the invention to be had the following advantages compared with existing brushless ac synchronous generator：
1st, the wide rotary transformer of the range of speeds can transmit electric energy under any rotating speed, and axial dimension is small, and rotor is firm
Property is big, and dynamic balancing is easy, therefore the range of speeds is wide.
2nd, small, light-weight rotary transformer is more small than exciter, light-weight, if using high frequency, volume is more
Small, weight is lighter；The range of speeds is wide, motor it is small, light-weight.
3rd, the high existing generator of reliability, once adjuster power tube short circuit, rotor windings one lead directly to constant direct current,
Generator output voltage is very high during high speed, damage generator, electrical equipment.Wide speed brushless generator, even adjuster power
Tube short circuit (output direct current), since rotary transformer can only transmit exchange, generator excitation winding does not have electric current, will not cause height
Generator output voltage is very high when fast, damage generator, electrical equipment.
4th, cost is relatively low since rotating transformer structures are simple, small, and light-weight, material consumption is few, and manufacturing process is held
Easily, therefore whole generator cost is relatively low.
Brief description of the drawings
Attached drawing 1 --- wide speed brushless alternating-current generator structure schematic diagram (entirety).
1 --- rotary pole formula synchronous generator, 2 --- rotary transformer, 3 --- rotating rectifier, 4 --- silicon rectifier
Device, 5 --- pulse (switch) adjuster.
Attached drawing 2 --- wide speed brushless alternating-current generator structure schematic diagram (decomposition).
1 --- rotary pole formula synchronous generator, 2 --- rotary transformer, 3 --- rotating rectifier, 4 --- silicon rectifier
Device, 5 --- pulse (switch) adjuster, 6 --- electric appliance cover.
Attached drawing 3 --- wide speed brushless AC generator circuit diagram
1 --- rotary pole formula synchronous generator, 2 --- rotary transformer, 3 --- rotating rectifier, 4 --- rectification
Device, 5 --- pulse (or switch) adjuster.
Attached drawing 4 --- the structure diagram of radial air gap rotary transformer
1 --- outer magnetic core, 2 --- outer winding, 3 --- inner magnetic core, 4 --- interior winding 5 --- heat emission holes (groove), 6 ---
Wire lead slot.
Embodiment
Wide speed brushless generator because brushless excitation system, silicon rectifier relative to synchronous alternating-current generator position feelings
Condition, can be divided into two kinds of forms：Externally positioned type and internally-arranged type.Externally positioned type, this is that brushless excitation system, silicon rectifier are placed in alternative electric generation
Form in generator terminal lid, as shown in Figure 1, 2.Rotary transformer 2, rotating rectifier 3, pulse (or switch) adjuster 5, silicon rectifier
For the grade of device 4 all outside synchronous generator end cap, electric appliance cover 6 protects them.The primary iron core (magnetic core) of rotary transformer 2 is fixed on electricity
Generator terminal covers, and armature winding is connected with the output of pulse (or switch) adjuster 5 (being also secured on electric motor end cap), rotates transformation
Secondary iron core, winding and the rotating rectifier 3 of device 2 are fixed on motor shaft to be rotated together.
As shown in figure 3, impulse regulator exports the height of DC voltage according to silicon rectifier, accounted for rotary transformer output
Sky becomes direct current in the secondary generation mutual induction electromotive force of rotary transformer, then rotated rectifier, is added in exchange than different pulses
The Exciting Windings for Transverse Differential Protection of synchronous generator, realizes brushless excitation.
Internally-arranged type, this is the form that brushless excitation system, silicon rectifier are placed in alternator end cover.
Although the present invention has delivered, and its preferable concrete scheme is described, the technology of the technology is familiar with
Personnel are appreciated that：In the case of the scope and spirit of the present invention determined without prejudice to the claims, it can make each
Kind changes and deformation.
Claims (5)
1. wide speed brushless generator, is made of rotary pole formula synchronous alternating-current generator, silicon rectifier, brushless excitation system, its
It is characterized in that：Brushless excitation system is made of impulse regulator, rotary transformer, rotating rectifier；Rotary pole formula is synchronously sent out
Motor exports alternating current, and direct current is exported by silicon rectifier；Impulse regulator exports the height of DC voltage according to silicon rectifier
Low, different to rotary transformer output duty cycle pulse, in the secondary generation electromotive force of rotary transformer, then rotated rectifier
Become direct current, be added in the Exciting Windings for Transverse Differential Protection of synchronous alternating-current generator, realize brushless excitation.
2. wide fast brushless generator according to claim 1, it is characterised in that impulse regulator, rotation in brushless excitation system
The correlation changed between depressor, rotating rectifier is monofocal or double-end type.
3. wide fast brushless generator according to claim 2, it is characterised in that monofocal is positive activation type, inverse-excitation type, both-end
Formula is push-pull type, bridge-type.
4. according to the wide fast brushless generator of claim 1, it is characterised in that the rotary transformer, using radial air gap
Pole structure.
5. according to the wide fast brushless generator of claim 1, it is characterised in that be provided with the magnetic core of the rotary transformer scattered
Hot hole groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720417079.7U CN207251414U (en) | 2017-04-11 | 2017-04-11 | Wide speed brushless generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720417079.7U CN207251414U (en) | 2017-04-11 | 2017-04-11 | Wide speed brushless generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207251414U true CN207251414U (en) | 2018-04-17 |
Family
ID=61876252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720417079.7U Active CN207251414U (en) | 2017-04-11 | 2017-04-11 | Wide speed brushless generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207251414U (en) |
-
2017
- 2017-04-11 CN CN201720417079.7U patent/CN207251414U/en active Active
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