KR100956767B1 - Motor and generator have complexed afpm and rfpm - Google Patents

Abstract

PURPOSE: An AFPM(Axial Flux Permanent Magnet) and RFPM(Radial Flux Permanent Magnet) combined motor and a generator are provided to minimize cogging by minimizing a space between adjacent stators. CONSTITUTION: A magnet is respectively arranged on a first rotor(11) and a second rotor(12). First and second stators(41,42) are arranged between the first and second rotors. Each of the first and second stators comprises a core and two stator coils. Two stator coils are arranged on both sides of the core. A fixing device(50) is combined with the intermediate part of the core and is fixed to a fixing bracket(51). A yoke(30) connects the first and second rotors.

Description

AFPM & RFPM Motor & Generator {MOTOR AND GENERATOR HAVE COMPLEXED AFPM and RFPM}

The present invention relates to an Axial Flux Permanent Magnet (AFPM) and a Radial Flux Permanent Magnet (RFPM) composite motor and a generator. In the case of the AFPM and RF combined motor and generator, which can install the stator around the coil and construct the yoke for forming the magnetic path between the rotors, it is possible to minimize the leakage flux of AFPM and the counter electromotive force driving effect of RFPM. will be.

Under the global warming policy, the use of renewable energy is an essential position. Electric vehicles (EV) have been developed and put into practical use to suppress the generation of CO2, a major culprit of global warming.

Today's hybrid cars are equipped with engines and motors in the center of the vehicle, and use both engine and motor power. In the future, the direct-drive type electric vehicle (EV) is predicted to have the most efficient form of mounting a motor inside the wheel, and for this purpose, a motor having a small size, light weight, and high power is essential.

However, development of small size, light weight, high output motor / generator is still underway, and it is expected to be completed in the future.

In the case of the motor applied to the developed hybrid vehicle, the conventional RFPM method is mainly used, and a product having an efficiency characteristic of 95% at high speed is being developed. The RFPM method has good efficiency in the case of a motor, but it generates power during braking and has a lower efficiency characteristic compared to the efficiency of a motor when utilizing 'regenerative power'.

The present invention provides a more efficient motor / generator by minimizing leakage flux by combining the RFPM method with the AFPM method. When applied to a hybrid vehicle, the recovery rate of 'regeneration power' can be increased, and finally, the hybrid vehicle. This is to improve the overall driving ability.

The present invention seeks to maximize the efficiency of low-speed energy and to provide a high-efficiency motor and generator based on driving by back electromotive force, which is an advantage of RFPM, and minimizing leakage flux, which is an advantage of AFPM.

The present invention is to provide a composite motor and a generator combining the AFPM method and RFPM method,

First and second rotors having permanent magnets installed in directions facing each other;

Coils corresponding to both ends of the core are installed, the fixing device is coupled to the middle portion of the core is fixed to the external fixing bracket is installed between the first, the second rotor and the first, the second stator;

And a yoke spaced apart from the magnets installed in the first and second rotors to form a magnetic path by connecting the first and second rotors from the inside.

 The magnets installed in the first and second rotors are arranged so that the polarities of the magnets corresponding to each other are arranged opposite to each other with opposite magnetic poles.

The first and second stators are arranged such that three neighboring pairs are connected to the U, V, and W three-phase power terminals.

The first and second stators are configured by modularizing one stator part, and are arranged in such a manner that the gap between the adjacent stator parts is minimized with a gap of 0.5 mm to 1 mm.

The first and second stators,

One core, the first and second stator coils are provided on both ends of the core, and the stator cover supported on the upper and lower surfaces of the first and second stator coils, the coupling portion is formed on one side of the fixing device The insert is coupled to the core portion, and the other end of the fixing device is fixedly installed on the fixing bracket.

In addition, the present invention can be configured in a multi-stage structure by configuring the rotor in multiple stages and inserting the stator part, respectively, it is applicable to a hybrid vehicle, an elevator, a wind turbine and the like.

In addition, the present invention can minimize the caulking phenomenon by minimizing the distance between the stator and the stator to about 0.5 ~ 1mm in order to minimize the caulking phenomenon, by installing the stator to be inclined 2 to 5 ° to the magnet.

Here, the rotating shaft is connected to the center of the first and second rotors, and the power terminals are connected to the first and second stators, and the motor is used as a motor to rotate the rotor by supplying power. In the case of generating electric power by rotating a rotor, it is used as a generator. In other words, the motor and the generator can be used in combination.

The present invention provides a combined motor generator of the combined AFPM and RFPM, it is possible to obtain the effects of minimizing the leakage flux, which is the advantage of AFPM, and the back electromotive force driving, which is the advantage of RFPM. In addition, by installing two stators between one magnetic pole, it can be twice as efficient as a motor or generator of the same size, and there is an effect that can provide a small size, light weight and high efficiency motor / generator. As a result, it is expected to reduce operating costs, implement high-speed, high-efficiency motors / generators, enhance national competitiveness, and increase technological ripple effects when applied to hybrid vehicles, elevators, and wind turbines.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the main configuration of the AFPM and RFPM combined motor generator according to the present invention, Figure 2 is an explanatory diagram of the stator arrangement, Figure 3 is an exploded explanatory diagram of the stator.

As shown therein,

The present invention is to provide a combined motor / generator that combines the AFPM method and RFPM method,

First and second rotors 11 and 12 provided with magnets 21 and 22 constituting magnetic poles in directions facing each other;

Stator coils 41a and 42a corresponding to both ends of the core 43 are installed, and the fixing device 50 is coupled to an intermediate portion of the core 43 to be fixed to an external fixing bracket 51. A first and second stators 41 and 42 installed between the second rotors 11 and 12;

Yoke to form a magnetic path by connecting the first and second rotors 11 and 12 from the inside spaced apart from the magnets 21 and 22 installed on the first and second rotors 11 and 12 ( 30) and;

 The magnets 21 and 22 installed in the first and second rotors 11 and 12 are arranged so that the magnets corresponding to each other face each other with opposite polarities.

The first and second stators 41 and 42 are modularized by forming one stator part, and three pairs of adjacent stator parts are arranged to be connected to U, V, and W three-phase power terminals. The distance between the stator parts is arranged to minimize the gap with a gap of 0.5mm ~ 1mm.

The first and second stators 41 and 42 are

On the upper and lower surfaces of one core 43, first and second stator coils 41a and 42a provided at both ends of the core 43, and first and second stator coils 41a and 42a, respectively. It consists of a stator cover (41b, 42b) for supporting, a coupling portion (50a) is formed on one side of the fixing device 50, by inserting and coupling the intermediate portion of the core 43 to the coupling portion (50a) One stator part is modularized. And the other end of the fixing device 50 is configured to be fixed to the fixing bracket (51). Here, the stator cover, the stator cover may be installed on the upper and lower surfaces of each stator coil, or the stator cover may be installed only on the outer side as shown in FIG.

Although not shown in the drawings, a rotating shaft is connected to and installed at the center of the first and second rotors, and a power terminal is connected to and installed to the first and second stators. Is used as a motor, and in the case of generating electric power by rotating the rotor, it is used as a generator. In other words, the motor and the generator can be used in combination.

As described above, in the rotor configuration of the AFPM, the distance between the magnets 21 and 22 corresponding to each other is increased, and the core 43 is provided in the middle of the magnets 21 and 22 corresponding to each other, like the RFPM. By providing two stator coils 41a and 42a in the core 43, the first stator 41, the second stator 42, and the magnets 21 of the first rotor 11 are provided. A magneto is formed by the magnet 21 of the first rotor 11 through the magnet 22 and the yoke 30 of the second rotor 12. Therefore, the effect of AFPM which reduces the loss by the leakage magnetic flux can be obtained, and the RFPM structure in which the first and second stator coils 41a and 42a are provided in the core 43 and the stator is continuously arranged adjacent to each other is provided. Since it is possible to drive the back EMF, it is possible to provide a motor and a generator of a combination of AFPM and RFPM.

On the other hand, cogging may occur in the configuration of the motor / generator. In order to minimize the coking phenomenon, the first and second stator coils 41a and 42a are installed in the core 43, The stator part having the stator 50 installed is modularized and configured by minimizing an interval between one stator part and a neighboring stator part. In the present invention, the distance between the stator part and the stator part is minimized to 0.5 to 1 mm, and correspondingly, the magnet installed in the rotor also minimizes the cost of neighboring magnets, thereby minimizing caulking.

Figure 4 is an exemplary installation of the stator part for reducing the caulking phenomenon according to the present invention.

In addition, to reduce the caulking phenomenon, as shown in Figure 4, it is configured to reduce the caulking phenomenon by installing the stator part 2 to 5 ° inclined.

5 is a diagram illustrating the structure of the APM and RF composite multi-motor and the generator according to the present invention, the present invention can be installed in a multi configuration as shown in Figure 5, the first, second rotor A stator part comprising an intermediate rotor and a yoke connected to each other, a magnet installed on both sides of the intermediate rotor, and the first and second stators 41 and 42 formed as a module. The magnets of the first rotor and the intermediate rotor and the magnets of the intermediate rotor and the second rotor are respectively inserted and installed to form a multi-structure. In FIG. 5, a configuration in which two pairs are installed is illustrated, but is not limited thereto and may be installed in a plurality of structures.

The present invention can increase efficiency by minimizing leakage flux, which is the advantage of AFPM, and use the back electromotive force, which is the advantage of RFPM, and install the first and second stators, that is, two stators on the upper and lower sides, so that about twice the size of a motor of the same size is achieved. You can get the power of, even when used as a generator can get twice the power.

As a result, in the present invention, it is possible to provide a small / light weight and high efficiency motor / generator, thereby minimizing power loss, thereby increasing efficiency and obtaining high power generation efficiency.

The AFPM and RFPM composite motor and generator according to the present invention can be multi-configured, and can be applied as a motor or a generator to a hybrid car, an elevator, a wind turbine, and the like.

1 is a cross-sectional view showing the main portion of the AFPM and RFPM combined motor generator according to the present invention.

2 is an explanatory diagram of an arrangement of stators;

3 is an exploded configuration diagram of the stator.

Figure 4 is an exemplary installation of stator parts for reducing the caulking phenomenon according to the present invention

5 is a diagram illustrating the structure of the APM and RF composite multi-motor and the generator according to the present invention.

<Description of the symbols for the main parts of the drawings>

11, 12: 1st, 2nd rotor 21, 22: magnet

30: York 41,42: first and second stator

41a, 42a: Stator coil 41b, 42b: Stator cover

43: core 50: fixing device

50a: coupling part 51: fixing bracket

Claims (7)

In the rotor and the rotating shaft is installed, the motor and the generator used as a motor or a generator by connecting the power terminal to the stator coil, First and second rotors 11 and 12 provided with magnets 21 and 22 so as to face each other in a direction facing each other; Two stator coils 41a and 42a corresponding to both ends of the core 43 are installed, and a fixing device 50 is coupled to an intermediate portion of the core 43, and the fixing device 50 is fixed to an external fixing bracket ( A first and second stators 41 and 42 fixed to the first and second rotors 11 and 12, respectively; Yoke to form a magnetic path by connecting the first and second rotors 11 and 12 from the inside spaced apart from the magnets 21 and 22 installed on the first and second rotors 11 and 12 ( 30) And; FPM and RF composite motor and generator characterized in that comprising a. The method of claim 1,  The magnets 21 and 22 installed in the first and second rotors 11 and 12 are arranged in such a manner that the magnets corresponding to each other are arranged so that their polarities are opposite to each other with opposite magnetic poles. Motor and generator. According to claim 1, wherein the first and second stator (41, 42) is made of a single stator part consisting of a modularization, one stator part is arranged in the interval of 0.5mm ~ 1mm with a neighboring stator part AFP and RF composite motor and generator characterized in that. According to claim 1, wherein the first and second stator (41, 42) is made of a single stator part is composed of a modular, the stator part is characterized in that the installed 2 to 5 ° inclined with respect to the magnet RF composite motor and generator. The method of claim 1, wherein the first and second stators (41, 42), On the upper and lower surfaces of one core 43, first and second stator coils 41a and 42a provided at both ends of the core 43, and first and second stator coils 41a and 42a, respectively. Stator cover (41b) (42b) for supporting, the coupling portion (50a) is formed on one side of the fixing device 50 to insert the core 43 into the coupling portion (50a) stator part module Configured as APM and RF composite motor and generator, characterized in that the other end of the fixing device 50 is fixedly installed on the fixing bracket (51). [6] The APM and RF composite motor and generator according to claim 5, wherein the stator cover is provided with a stator cover provided on each of upper and lower surfaces of each stator coil, or a stator cover is provided only at an outer side thereof. The method according to any one of claims 1 to 6, Intermediate rotors are installed between the first and second rotors and are connected to each other with yokes, and magnets are installed on both sides of the intermediate rotors, respectively, and the first and second stators 41 and 42 are connected. APM and RF composite, characterized in that the stator part composed of one module is inserted and installed between the magnets of the first rotor and the intermediate rotor and between the magnets of the intermediate rotor and the second rotor, respectively. Motor and generator.

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