CN104600928A - Continuously variable speed dual-rotor motor - Google Patents
Continuously variable speed dual-rotor motor Download PDFInfo
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- CN104600928A CN104600928A CN201510082704.2A CN201510082704A CN104600928A CN 104600928 A CN104600928 A CN 104600928A CN 201510082704 A CN201510082704 A CN 201510082704A CN 104600928 A CN104600928 A CN 104600928A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
A continuously variable speed dual-rotor motor is an asynchronous motor made through a mechanical rotational magnetic field and comprises an inner rotor and an outer rotor; the outer rotor is a cage rotor, and a spindle of the outer rotor is connected to an output shaft through a transmission mechanism; the inner rotor is disposed in an inner cavity of the outer rotor and provided with a magnetic pole and an exciting coil, a spindle of the inner rotor is connected with a common AC motor through the transmission mechanism; the exciting coil is connected to a DC power source which is adjustable. The continuously variable speed dual-rotor motor has the advantages that speed regulating performance is good, the speed can be stably and smoothly regulated from zero to rated speed of the AC motor, speed regulating efficiency is high, the output power and efficiency of the AC motor is kept basically constant during the whole speed regulation process, speed regulation leads to no reduction in motor power and efficiency, speed regulation cost is low, chances of overloading are zero, an automatic overload protection function is provided, running reliability is high, the motor is adaptive to severe environments, and the motor has two running modes interchangeable.
Description
Technical field
The present invention relates to technical field of motors, particularly a kind of stepless speed regulation double rotor motor.
Background technology
Since alternating current machine comes out, research about speed regualtion of AC motor problem is the heat subject of electric field always, whole world electrical industry circle all to wither fast method doing one's utmost to seek best alternating current machine, by long-term and unremitting effort, so far existing multiple fast method of withering is applied, but often kind of method is all only applicable to specific occasion, even if also there can be no exception whatever for contemporary state-of-the-art frequency-variable electronic speed regulating method, all motor application fields still can not be applicable to.As can be seen here, the speed governing problem of alternating current machine is not yet properly settled so far, the speed governing effect of alternating current machine at present still not as good as direct current machine so that some important motor application fields as the fields such as steel rolling, Ship Propeling, locomotive traction still adopt so far power consumption large, have pollution, direct current machine that cost is high.
Summary of the invention
Object of the present invention is just to provide a kind of simple structure, economy and durability, can be applicable to all motor application fields and has the stepless speed regulation double rotor motor of DC motor speed-regulating effect, it forms stepless speed regulation double rotor motor driver together with common alternating current machine, the value of alternating current machine is fully used, thus the stepless speed regulation double rotor motor that the economic benefit in motor application field and social benefit are fully enhanced.
Solution of the present invention is such:
A kind of stepless speed regulation double rotor motor, comprise common AC motor and double-rotor machine, described double-rotor machine adopts the asynchronous motor formed by mechanical rotating magnetic field, and double-rotor machine comprises inner and outer Rotator, described external rotor is cage-type rotor, and its rotating shaft connects output shaft by transmission mechanism; Described internal rotor is positioned at external rotor intracavity space, is provided with magnetic pole and magnet exciting coil, and the asynchronous motor described in its rotating shaft is connected by transmission mechanism, magnet exciting coil is connected to adjustable DC power supply.
Technical scheme also comprises more specifically: described internal rotor is fixed on rotating shaft, described rotating shaft two ends are connected to bearing bracket stand by inner rotor bearing, rotating shaft, internal rotor rotation is driven by transmission mechanism, the structure that formation rotating shaft, internal rotor rotate in described external rotor intracavity space by common AC motor.
Further: described external rotor is connected to rotating shaft by bearing, formation external rotor, internal rotor form the structure that coaxial line rotates each other.
Further: described external rotor forms cage-type rotor by copper or aluminium sliver and electrical sheet.
Double-rotor machine of the present invention is in fact a kind of asynchronous motor being core with mechanical rotating magnetic field, be assembled into double-rotor machine drive system by double-rotor machine and common alternating current machine, double-rotor machine a kind ofly only has inside and outside two rotors and do not have the extraordinary asynchronous motor of stator.External rotor is cage-type rotor, is made up of, is installed on two end caps, then is installed on rotating shaft by bearing copper or aluminium sliver and electrical sheet.Internal rotor is that magnetic pole and magnet exciting coil are formed, and is directly installed on rotating shaft.Inner and outer rotors is totally one rotating shaft, and internal rotor is driven by common alternating current machine and rotates, and the mechanical rotating magnetic field that external rotor is produced by internal rotor drives and rotates, and regulates the exciting current of internal rotor and the rotating speed of adjustable external rotor.External rotor connects work mechanism, and the rotating speed of work mechanism just obtains corresponding adjustment.
Speed control principle of the present invention is, described double-rotor machine is between alternating current machine and work mechanism, double-rotor machine is driven to rotate by alternating current machine, so just there is two rotating magnetic fields of different nature, the i.e. uncontrollable electric rotating magnetic field of alternating current machine and the mechanical rotating magnetic field that can regulate of double-rotor machine.Regulate the rotating speed of the exciting current of mechanical rotating magnetic field and adjustable double-rotor machine.Double-rotor machine drives work mechanism to rotate, and the rotating speed of work mechanism just obtains corresponding adjustment.
The present invention has obvious difference with common alternating current machine in three: 1 is structural shape, and common alternating current machine is made up of a stator and a rotor; Described double-rotor machine does not have stator, but is made up of two rotors.2 is power conversion modes, and common alternating current machine converts electric energy to uncontrollable mechanical energy; Described double-rotor machine converts uncontrollable mechanical energy to can regulate mechanical energy.3 is specified running statuses, and common alternating current machine is constant speed permanent torque state, can not stable operation when exceeding breakdown torque; Described double-rotor machine is that speed change becomes torque conditions, still can stable operation when exceeding breakdown torque.
Therefore, advantage of the present invention is:
1, good speed adjustment features:
The present invention is stepless speed regulation, and rotating speed can be stablized from zero to the rated speed of alternating current machine and regulates smoothly, and speed governing effect is not second to direct current machine.
2, speed efficiency is high:
The present invention is constant-power speed regulation, and the power output of speed governing overall process alternating current machine and efficiency keep constant all substantially, and speed governing can not cause the power efficiency of motor to reduce.
3, speed governing cost is low:
The present invention is one to be only had two rotors and not to have the extraordinary asynchronous motor of stator, therefore the inevitable normal asynchronous lower than same capacity of its cost.In addition, because speed regulating method of the present invention is simple, without the need to the electronic control system of complexity, so the cost of a whole set of birotor drive system will significantly lower than existing various drive system.
4, operational reliability is high:
The overload free possibility of the present invention, namely has automatic overload protection function.
5, adverse circumstances are adapted to:
The present invention is full-closed structure, can prevent harmful substance from entering internal body.
6, there are motor and generator two kinds of operating states and can mutually change.
Accompanying drawing explanation
Fig. 1 is double-rotor machine drive system schematic diagram.
Fig. 2 is double-rotor machine driving device structure figure.
Fig. 3 is double-rotor machine structure chart.
Embodiment
As shown in Figure 1, 2, the present invention is assembled into double-rotor machine drive system by double-rotor machine 2 and common alternating current machine 1, and described double-rotor machine 2 a kind ofly only has internal rotor 7, external rotor 6 two rotors and do not have the extraordinary asynchronous motor of stator.External rotor 6 is cage-type rotors, is made up of, is installed on two end caps 8, then is installed on rotating shaft 10 by bearing 9 copper or aluminium sliver and electrical sheet.Internal rotor 7 is positioned at external rotor 6 intracavity space, is provided with magnetic pole and magnet exciting coil, is directly fixedly installed in rotating shaft 10.Rotating shaft 10 two ends are connected to bearing bracket stand 11 by inner rotor bearing, drive rotating shaft, internal rotor rotation, the structure that formation rotating shaft, internal rotor rotate in described external rotor intracavity space by asynchronous motor by transmission mechanism.
External rotor 6 is connected to rotating shaft 10 by bearing 9, inner and outer Rotator is totally one rotating shaft 10, formation external rotor, internal rotor form the structure that coaxial line rotates each other, internal rotor 7 connects common alternating current machine 1 by belt gear, rotation is driven by common alternating current machine 1, the mechanical rotating magnetic field that external rotor 6 is produced by internal rotor 7 drives and rotates, and regulates the exciting current of internal rotor 7 and the rotating speed of adjustable external rotor.External rotor 6 connects work mechanism 3 by belt gear, and the rotating speed of work mechanism 3 just obtains corresponding adjustment.
As shown in Figure 3, double-rotor machine comprises external rotor 6, internal rotor 7, end cap 8, bearing 9, rotating shaft 10, bearing bracket stand 11, brush and slip ring 12.Wherein, external rotor 6 is cage-type rotors, is made up of, is installed on two end caps 8, then is loaded on rotating shaft 10 by bearing 9 copper or aluminium sliver and electrical sheet.Rotating shaft 10 two ends are installed on bearing bracket stand 11 by another group bearing 9 again.Internal rotor 7 is that magnetic pole and magnet exciting coil are formed, and is directly installed on rotating shaft 10, wherein one end ground connection (body) of magnet exciting coil, and wire is drawn outside with slip ring 12 and is connected with adjustable DC power supply by another termination brush.Regulate the size of direct current to change the rotating speed of internal rotor magnetic flux and adjustable external rotor.External rotor connects work mechanism, and the rotating speed of work mechanism just obtains corresponding adjustment.
As three phase mains being connected to the alternating current machine 1 of Fig. 1, be electric motor state; If the work mechanism 3 of Fig. 1 is as prime mover, be Generator Status.Motor and generating two states can be changed mutually.Based on this function, the present invention is especially suitable for use as automobile drive electric motor and is used as variable-speed constant-frequency wind power generation system.
When the present invention is used as automobile drive electric motor, the electric energy that the electric energy of automobile brake regeneration and descending produce all is transported to storage battery, can extend battery-using time like this and obtain energy-saving effect.During as variable-speed constant-frequency wind power generation system, wind energy conversion system is the work mechanism 3 of Fig. 1, regulate the exciting current of double-rotor machine 2 can keep the invariablenes turning speed of alternating current machine 1, alternating current machine 1 just becomes the constant wind-driven generator of frequency and voltage, such wind-powered electricity generation just can be delivered directly to electrical network, and wind generator system not only can save the current transformer of costliness but also can significantly improve the operational reliability of wind power system.
Claims (4)
1. a stepless speed regulation double rotor motor, it is characterized in that: comprise common AC motor and double-rotor machine, described double-rotor machine adopts the asynchronous motor formed by mechanical rotating magnetic field, double-rotor machine comprises inner and outer Rotator, described external rotor is cage-type rotor, and its rotating shaft connects output shaft by transmission mechanism; Described internal rotor is positioned at external rotor intracavity space, is provided with magnetic pole and magnet exciting coil, and its rotating shaft connects common AC motor by transmission mechanism, and magnet exciting coil is connected to adjustable DC power supply; Described stepless speed regulation double rotor motor forms stepless speed regulation double rotor motor driver together with common alternating current machine.
2. stepless speed regulation double rotor motor according to claim 1, it is characterized in that: described internal rotor is fixed on rotating shaft, described rotating shaft two ends are connected to bearing bracket stand by inner rotor bearing, rotating shaft, internal rotor rotation is driven by transmission mechanism, the structure that formation rotating shaft, internal rotor rotate in described external rotor intracavity space by common AC motor.
3. stepless speed regulation double rotor motor according to claim 2, is characterized in that: described external rotor is connected to rotating shaft by bearing, and formation external rotor, internal rotor form the structure that coaxial line rotates each other.
4. the stepless speed regulation double rotor motor according to claim 1 or 2 or 3, is characterized in that: described external rotor forms cage-type rotor by copper or aluminium sliver and electrical sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510082704.2A CN104600928A (en) | 2015-02-16 | 2015-02-16 | Continuously variable speed dual-rotor motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510082704.2A CN104600928A (en) | 2015-02-16 | 2015-02-16 | Continuously variable speed dual-rotor motor |
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| CN104600928A true CN104600928A (en) | 2015-05-06 |
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| CN201510082704.2A Pending CN104600928A (en) | 2015-02-16 | 2015-02-16 | Continuously variable speed dual-rotor motor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB603237A (en) * | 1944-05-22 | 1948-06-11 | Herbert Edward Page | Variable speed electric drive |
| CN2085579U (en) * | 1990-12-04 | 1991-09-25 | 王玉成 | Induction and speed regulating asynchronous motor |
| CN2181124Y (en) * | 1994-01-06 | 1994-10-26 | 济南德琨电视电缆设备有限公司 | AC stepless speed regulating motor |
| CN2251832Y (en) * | 1995-11-16 | 1997-04-09 | 韩天鹏 | Cage rotor asynchronous adjustable-speed motor |
| CN101567611A (en) * | 2009-02-16 | 2009-10-28 | 吴积善 | AC electric motor with adjustable speed |
-
2015
- 2015-02-16 CN CN201510082704.2A patent/CN104600928A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB603237A (en) * | 1944-05-22 | 1948-06-11 | Herbert Edward Page | Variable speed electric drive |
| CN2085579U (en) * | 1990-12-04 | 1991-09-25 | 王玉成 | Induction and speed regulating asynchronous motor |
| CN2181124Y (en) * | 1994-01-06 | 1994-10-26 | 济南德琨电视电缆设备有限公司 | AC stepless speed regulating motor |
| CN2251832Y (en) * | 1995-11-16 | 1997-04-09 | 韩天鹏 | Cage rotor asynchronous adjustable-speed motor |
| CN101567611A (en) * | 2009-02-16 | 2009-10-28 | 吴积善 | AC electric motor with adjustable speed |
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Effective date of registration: 20160513 Address after: 530003, No. third, 4th floor, 2 East Fourth Avenue, Nanning Garden Road, the Guangxi Zhuang Autonomous Region, 3B04 Applicant after: Nanning Guangxi green spring science and Technology Development Co., Ltd. Address before: 545005, No. 151, Longtan Road, 22, Liuzhou, the Guangxi Zhuang Autonomous Region, 35 Applicant before: Wu Jishan |
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Application publication date: 20150506 |
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