CN201466929U - Dual-permanent magnet type brushless double-fed dual-mechanical port motor - Google Patents
Dual-permanent magnet type brushless double-fed dual-mechanical port motor Download PDFInfo
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- CN201466929U CN201466929U CN2009200841139U CN200920084113U CN201466929U CN 201466929 U CN201466929 U CN 201466929U CN 2009200841139 U CN2009200841139 U CN 2009200841139U CN 200920084113 U CN200920084113 U CN 200920084113U CN 201466929 U CN201466929 U CN 201466929U
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Abstract
The utility model provides a dual-permanent magnet type brushless double-fed dual-mechanical port motor, belonging to the technical field of alternating-current motors and control thereof. The dual-permanent magnet type brushless double-fed dual-mechanical port motor consists of a mechanical portion and an electrical portion, wherein the mechanical portion comprises an inner rotor, an outer rotor and a stator, and the electrical portion comprises two sets of independent stator windings, two sets of negative-phase sequence cascaded outer rotor windings, two sets of independent permanent magnets and an alternating-current-alternating electricity transformer. The two sets of stator windings share a magnetic circuit; the two sets of outer rotor windings are respectively located at the inner and outer sides of the outer rotor, wherein the magnetic circuit is independent; the two sets of permanent magnets are respectively located at the outer sides of the inner and outer rotors and the magnetic circuit is independent; the permanent magnet on the outer rotor and one set of outer rotor windings share a magnetic circuit; the pole pairs are different and in the relationship of integral multiple; the stator control winding corresponds to the other set of outer rotor windings; and the stator power winding corresponds to the permanent magnet on the outer rotor. The utility model has simple and compact structure, reduces the copper content of the winding and improves the power density of the motor.
Description
Technical field
The utility model belongs to alternating current machine and control technology field thereof, is specifically related to a kind of double-mechanical-port motor of birotor brushless feed.
Background technology
The speed regualtion of AC motor method comprises pole changing and frequency control, and in addition, induction alternating current (AC) motor can also become the slip speed governing.Pole changing can not continuous speed adjustment, is of limited application.Frequency control need be used and the frequency converter of motor with capacity, cost height.Become the slip speed governing and be divided into energy-dissipating type and feedback type change slip speed governing again, the power consumption during the former speed governing is very big, and operational efficiency is low, and the scope of application is also limited; Slip energy loopback power supply when the latter can be with electric machine speed regulation, the operational efficiency height is as string utmost point speed governing and doubly-fed adjustable speed system.
One cover, three phase windings are arranged on the doubly-fed adjustable speed AC induction motor rotor at present, with brush the rotor three-phase winding is connected with electrical energy transformer, and, regulate rotating speed of motor by electrical energy transformer and AC network positive energy exchange by collector ring.In order to eliminate the wearing and tearing between collector ring and the brush and the unreliability of operation, 20 beginning of the century Hunt propose prototype Self-cascading motor, and are improved by people such as Broadway the seventies and to become brushless dual-feed motor; Wallace Alan K designed a kind of brushless dual-feed motor in 1994, see Wallace Alan K, A Design Procedure For the Brushless Doubly-Fed MachineAdjustable Speed Drive.ICEM, 1994, power winding and control winding are arranged on this motor stator, regulate the energy Flow of controlling between winding and the AC network by energy converter, reach the purpose of regulating motor speed.This motor has only a mechanical port, and prime mover can not transfer energy directly to load.
The nineties in last century, the people such as Nordlund of Sweden KTH propose a kind of double-mechanical-port motor, published thesis in 2005, see E.Nordlund, The Four-Quadrant TransducerSystem for Hybrid Electric Vehicles.Doctor ' s thesis, Royal Institute of
Technology，Stockholm，May，2005，ISBN?91-7178-057-2，ISSN1650-674X。This motor has two rotors, a rotor (internal rotor) links with prime mover, another rotor (external rotor) links with load, prime mover can directly transmit mechanical energy to load, regulate the energy Flow between motor internal rotor and the stator, can regulate motor speed, this motor power changes versatile and flexible, and the capacity of electrical energy transformer also can reach the total capacity of system usually, reduced the cost of electrical energy transformer.But this motor internal rotor winding need be by collector ring and brush projected current, causes that the motor operational efficiency descends, reliability reduces and often need drawback such as safeguard to parts such as brushes.
Chinese patent ZL 200720087223.1 has announced a kind of brushless dual-mechanical port motor, and this technical scheme proposes to have on a kind of internal rotor two cover windings, and a cover permanent magnet is respectively posted in the interior outside on the external rotor, and the structures of two cover windings are arranged on the stator.From electrical principle, this structure is equivalent to the combination of a magneto alternator, a permanent magnet synchronous motor and a wire-wound asynchronous motor.This structure can solve a series of problems that caused by collector ring and brush on principle, but materials used is too much on its structure, and axial length is long, and motor volume is bigger.
The utility model content
The purpose of this utility model is to provide a kind of pair of permanent-magnet type brushless double feed double-mechanical-port motor, and is simple and compact for structure, improved the utilance of ferromagnetic material and the power density of motor.
The technical solution of the utility model is:
A kind of pair of permanent-magnet type brushless double feed double-mechanical-port motor, form by mechanical part and electric part, mechanical part comprises internal rotor 1, external rotor 2 and stator 3 from inside to outside successively, electric part comprises stator winding, external rotor winding and AC-DC-AC electrical energy transformer 4, and described internal rotor outer surface is equipped with a cover permanent magnet 9; Described external rotor outer surface is equipped with a cover permanent magnet 11; Described stator winding comprises stator power winding 10 and stator control winding 6;
Described external rotor winding comprises that the first external rotor winding 8 and the second external rotor winding, 7, two winding port negative-phase sequences link to each other.Two cover rotor windings 7 and 8 numbers of pole-pairs can be identical also can be inequality, its magnetic field is mutually orthogonal, is independent of each other, and is independent fully on magnetic circuit;
The first external rotor winding 8 is corresponding with internal rotor permanent-magnetic body 9, forms an air-gap field jointly; The second external rotor winding 7 is corresponding with stator control winding 6, forms an air-gap field jointly, is called magnetic field A; External rotor permanent magnet body 11 is corresponding with stator power winding 10, forms an air-gap field jointly, is called magnetic field B; Magnetic field A is different with the magnetic field B number of pole-pairs and be the integral multiple relation; For example the number of pole-pairs of magnetic field A is 1, and the number of pole-pairs of B is 4.Only in this way magnetic circuit A and magnetic circuit B just can think separate, can the phase mutual interference.
Described AC-DC-AC electrical energy transformer comprises rectifier and inverter, and rectifier AC side and stator control winding are electrically connected, and inverter AC side and stator power winding are electrically connected, and the DC side of rectifier and inverter is electrically connected mutually.
Parallel connection direct power supply between described rectifier and the inverter, DC power supply are a kind of in storage battery, super capacitor or the direct current network.
Technique effect of the present utility model is presented as:
(1) the utility model is affixed on internal rotor outer surface and external rotor outer surface with permanent magnet.The shared magnetic circuit of permanent magnet on the second external rotor winding and the external rotor outer surface, but because the number of pole-pairs of this winding and permanent magnet is the integral multiple relation, thus their two kinds of magnetic fields forming can think separate, can the phase mutual interference.The second external rotor winding magnetic field and magnetic field of permanent magnet can be designed on same axial coordinate, be made structure compact more, reduce the volume that motor shaft makes progress.
(2) this new structure has adopted two to overlap the independently different power circuit of permanent magnet formation, has improved the power density of motor.Because the permanent magnet on the external rotor outer surface and the second external rotor design of Windings can more make full use of ferromagnetic material in a magnetic circuit.Permanent magnet pole logarithm on the external rotor outer surface can be much larger than the number of pole-pairs of the second external rotor winding, thereby motor is more suitable in the occasion that needs low cruise.
(3) this new structure is a permanent-magnet brushless DC electric machine with the design of electrical motor of external rotor permanent magnet body and stator power winding composition, when control, the space is divided into six quadrants, only need the detection external rotor to rotate to certain quadrant and get final product, do not need to detect the particular location of external rotor.And the threephase switch circuit of inverter only need open two-phase simultaneously, and permagnetic synchronous motor need be opened three-phase simultaneously, has so just reduced the switching loss of switching device, has improved the efficient of system.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model electrical schematic diagram.
Embodiment
As Fig. 1, shown in Figure 2, the utility model is made up of mechanical part and electric part, mechanical part comprises from inside to outside internal rotor 1, external rotor 2 and the stator 3 of installing successively, the outer surface of internal rotor mounts permanent magnet 9, external rotor 2 and internal rotor 1 and stator 3 are rotationally connected by bearing. and internal rotor 1 links to each other with internal combustion engine (ICE), imports as power; Outer rotor shaft links to each other with mechanical load, exports as power;
Electric part comprises stator winding, external rotor winding and electrical energy transformer, and described stator winding comprises stator power winding 10 and stator control winding 6; Described external rotor winding comprises the first external rotor winding 8 and the second external rotor winding 7.
The first external rotor winding 8 and the second external rotor winding 7 are separate on magnetic circuit.But two cover windings link to each other in the end negative-phase sequence, to form equidirectional torque.
Two cover windings of stator 3 are connected by AC-DC-AC electrical energy transformer 4.
Internal rotor permanent-magnetic body 9 is corresponding with the first external rotor winding 8, forms a magneto alternator; The second external rotor winding 7 is corresponding with stator control winding 6, forms a wire-wound asynchronous motor; External rotor permanent magnet body 11 is corresponding with stator power winding 10, forms a permanent-magnet brushless DC electric machine; Rotation drives the magneto alternator generating to internal combustion engine as prime mover, when internal rotor 1 rotating speed is higher than external rotor 2 rotating speeds, part energy is directly passed to external rotor and is used to drag the load rotation, its complementary energy passes to the second external rotor winding 7 by the first external rotor winding 8, pass to stator control winding 6 again, and be stored in the DC power supply 5 by rectifier 4-1.When the torque of external rotor needs increases, can from DC power supply 5, take out energy, supply with squirrel-cage motor by inverter 4-2, additional torque is provided.
AC-DC-AC electrical energy transformer 4 comprises rectifier 4-1 and inverter 4-2, and rectifier 4-1 AC side and stator control winding 6 are electrically connected, and inverter 4-2 AC side and stator power winding 10 are electrically connected, and the DC side of rectifier and inverter is electrically connected mutually.
Can parallel connection direct power supply 5 between rectifier 4-1 and the inverter 4-2, the imbalance power between the motor input and output mechanical output is provided.
For mixed power electric car, internal combustion engine often frequently changes the working point because being subjected to the influence of load behavior, but most of working point is not again the high efficiency point of internal combustion engine, so cause the efficiency of internal combustion engine low, energy loss is serious, but adopt brushless dual-mechanical port motor as drive system, internal combustion engine can be operated in a fixing working point, and the operating mode of load can be regulated arbitrarily, thereby make and do not have direct mechanically contact between the input and output, internal combustion engine can long-term work at the efficiency operation point, thereby improve fuel availability, reduce the wastage.And, input power and power output not necessarily to be equated at electrical energy transformer intermediate dc link adding storage battery.Remedy input with the difference power between the output by storage battery, the power of internal combustion engine also can not need change fast with load behavior, thereby internal combustion engine works in efficient district all the time under the situation of the frequent change of proof load operating mode effectively.
Claims (3)
1. two permanent-magnet type brushless double feed double-mechanical-port motors, form by mechanical part and electric part, mechanical part comprises internal rotor (1) from inside to outside successively, external rotor (2) and stator (3), electric part comprises stator winding, the external rotor winding, permanent magnet and AC-DC-AC electrical energy transformer (4), it is characterized in that: described internal rotor (1) outer surface is equipped with first permanent magnet (9), described external rotor (2) outer surface is equipped with second permanent magnet (11), described stator winding comprises stator power winding (10) and stator control winding (6), described external rotor winding comprises the first external rotor winding (8) and the second external rotor winding (7), the winding port negative-phase sequence of the first, the second external rotor winding (8) and (7) links to each other;
The first external rotor winding (8) is corresponding with first permanent magnet (9), forms first air-gap field; The second external rotor winding (7) is corresponding with stator control winding (6), forms interstice magnetic field; Second permanent magnet (11) is corresponding with stator power winding (10), forms the 3rd air-gap field; The number of pole-pairs of interstice magnetic field and the 3rd air-gap field is inequality and be the integral multiple relation;
Stator power winding (10) is connected by AC-DC-AC electrical energy transformer (4) with stator control winding (6).
2. the brushless double feed double-mechanical-port motor of pair permanent-magnet structure as claimed in claim 1, it is characterized in that: described AC-DC-AC electrical energy transformer (4) comprises rectifier and inverter, rectifier AC side and stator control winding (6) are electrically connected, inverter AC side and stator power winding (10) are electrically connected, and rectifier links to each other in DC side with inverter.
3. the brushless double feed double-mechanical-port motor of pair permanent-magnet structure as claimed in claim 2 is characterized in that: parallel connection direct power supply between described rectifier and the inverter, DC power supply are a kind of in storage battery, super capacitor or the direct current network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200841139U CN201466929U (en) | 2009-03-09 | 2009-03-09 | Dual-permanent magnet type brushless double-fed dual-mechanical port motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200841139U CN201466929U (en) | 2009-03-09 | 2009-03-09 | Dual-permanent magnet type brushless double-fed dual-mechanical port motor |
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|---|---|
| CN201466929U true CN201466929U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200841139U Expired - Fee Related CN201466929U (en) | 2009-03-09 | 2009-03-09 | Dual-permanent magnet type brushless double-fed dual-mechanical port motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219842A (en) * | 2013-04-28 | 2013-07-24 | 哈尔滨工业大学 | Double-mechanical port electromechanical energy converter |
| CN111277191A (en) * | 2020-03-01 | 2020-06-12 | 华中科技大学 | Dynamic response active control method and device for brushless dual-electromechanical port motor |
-
2009
- 2009-03-09 CN CN2009200841139U patent/CN201466929U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219842A (en) * | 2013-04-28 | 2013-07-24 | 哈尔滨工业大学 | Double-mechanical port electromechanical energy converter |
| CN103219842B (en) * | 2013-04-28 | 2015-08-19 | 哈尔滨工业大学 | Double-mechanical port electromechanical energy converter |
| CN111277191A (en) * | 2020-03-01 | 2020-06-12 | 华中科技大学 | Dynamic response active control method and device for brushless dual-electromechanical port motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20140309 |