JPS58116050A - Motor - Google Patents

Abstract

PURPOSE:To continuously variably run a motor at the desired speed by providing a rotating mechanism which varies the relative opposing position between the first stator and the second stator. CONSTITUTION:The third gear 14 is engaged through the second gear 13 with the first gear 12, thereby forming a rotating mechanism for rotating the second stator 2. A lever 15 is provided at the third gear 14, is the driven, thereby transmitting it through gears 12, 13, 14. Thus, the second stator 2 is rotated, thereby varying the relative opposed position from the first stator 1. When the relative opposed position of the stator is varied, continuously variable speed can be obtained from the synchronizing speed as desired.

Description

[Detailed Description of the Invention] The present invention provides a single moving machine having the functions of an induction machine and a synchronous machine.
do.

The electric motor has a permanent magnet type and has the same i4A function.
Generally speaking, the speed cannot be varied. In order to change the %rc rotation speed, conventional methods have been used such as changing the number of poles or changing the power frequency. However, when changing the speed by changing the number of poles, continuous speed changes cannot be obtained, and when changing the speed by changing the power frequency or rolling pressure of the power source,
The disadvantage is that it requires a power supply circuit, making the structure complicated.

Additionally, permanent magnet type synchronous motors have the disadvantage that they cannot be started and must be started using external power.

As described above, with conventional electric motors having a synchronous function, the desired speed could not be obtained, and the desire for simple and continuous control could not be fully satisfied.

The present invention was made in view of the above circumstances, and its purpose is to provide an electric motor that can obtain a desired speed, has a simple structure, has a continuously variable speed synchronization function, and is easy to start. to do - to be something.

The present invention will be explained below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the electric motor according to the present invention, and FIG. 3 is a plan view showing individual parts t'' of the embodiment shown in FIG. The first and second stators 1.2 are disposed facing each other in the coaxial direction, and electrical machine pre-winding #3.4 is fixed to the opposing surfaces of each, as shown in #13.
a), (arranged as shown in bl K. This volume ll1I3, 4Lfi, stator 1 of the 1st and #!2,
2. It is radially centered around the coax of 2 [concentrated winding to form 4 poles.

The l and l! A disc-shaped rotor 6° is arranged between the 12 stators 1 and 2 with a gap between them, and this rotor 66
The rotating shaft 7 is supported by bearings 1a and lb provided at the center of the first and second stators 1.2. The bearings 1a and lb may be provided in a separate frame other than the first and m2 stators 1.2.

The rotor 6o is #! As shown in FIG. 3(c), a large number of fan-shaped through holes 9 are drilled radially around the rotating shaft 7 in a conductive plate made of a material with high conductivity such as A/, O, etc., forming a basket shape. A cage-shaped rotor 6 of an induction motor is formed, and a rotor 6o of a synchronous motor having this function is formed in a through hole 9 of the cage-shaped rotor 6.

That is, this cage-shaped rotor 6 can operate as a soap conductor in this part and can be started. Moreover, such a structure can be easily press-formed, and in the case of Al, it can also be easily manufactured by die-casting. By the way, the winding 4 in the second stator 2
In this case, the first gear 12 is fixed, iii
It's broken. This first spacer wheel 12 has an X through hole 18 through which the rotating shaft 7 is passed through in the same manner. . ml
The third gear 14 meshes with the gear 12 via the second gear 13't-, forming a rotation mechanism that rotates the second stator 2 by 1 degree. The third gear 14 is provided with a lever 15, and the lever 15 is driven to move the gear 1
2, 13, and 14, the #82 stator 2 is fully rotated, and its relative position with respect to the first stator can be changed.

Thus, the windings 3.4 provided on the #s1 and second stators 1.2 are supplied with alternating current --C, which has a phase difference of 90 degrees with the gold phase of the capacitor, etc., and the first and m2 When the stators 1 and 2 are set at positions deviated from each other by 90 electrical degrees, the rotor 6° starts with the function of a squirrel cage induction motor, and the synchronous rotation speed increases to 12° with the function of a permanent magnet type synchronous motor.
Rotate at 07/P(r , p , m). However, f is the AC power frequency and P is the number of poles. And lever 15
When the second stator 2 is gradually rotated relative to the first stator IK around the rotation axis 7t to reduce the electrical angle, the synchronous motor loses synchronization and rotates. Child 6
The number of revolutions at 0 gradually decreases and the function of the squirrel cage induction motor begins. In other words, even after tax adjustment, it continues to rotate as an induction motor due to the action of the squirrel cage rotor. The number of revolutions at this time is 120 (
1-8) f/P(r, p, m). However, 8 is il
There are 9 slips (variables) depending on the relative rotation between the stators 1.2 and #I2. At an electrical angle of zero, the rotor 6° stops rotating. By changing the relative facing position of the stator in this manner, continuous speed change from synchronous speed is possible, and a desired rotation speed can be obtained. For example, when a fan is driven by an electric motor, a more precise torque/rotation speed characteristic as shown by the M curve in FIG. 2 is obtained. However, the broken line Ran-A,
B.

0 is the ratio of rotational speed of each trekking when the opposing position II of the stator is changed to decrease from 90 degrees of electrical angle 1@3.4. e and g are retraction toshita, f and h are evacuation toshita. The three points a, b, and C with -gM indicate high speed, medium speed, and low speed operation, respectively. Instead of the concentrated winding 411A, a distributed winding can be used.

As described in detail above, according to the present invention, it is possible to construct an electric motor that can be driven at a synchronous speed, can be easily and continuously variable to a desired speed, is easy to start, and has a simple structure. In addition, by using the axial air gap type, it is possible to make it extremely thin, and it does not take up much space.
Can be integrated into CIIA equipment.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the electric motor according to the present invention;
Fig. I42 is a characteristic diagram showing an example of the torque/speed/reaction characteristics of the electric motor according to the present invention, and Fig. 3 is a plan view showing each component in the embodiment shown in Fig. 1 in a reduced scale. 1.2... First and second stator, 3.4... Winding 6°... Rotor, 6... Cage rotor, 7... Rotating shaft, 10... Permanent magnet, 12-14...first to third gears, 15...lever. (7317) Representative Patent Attorney Kensuke Chika (and 1 other person) Figure 2 111-7 Figure 3

Claims (2)

[Claims] (1) A first and second stator having windings arranged in opposition to each other in a plane and through which a current flows through the first and second stators, and the first and second stators; a winding V of the first and twentieth stator, which is rotatably disposed face to face between the windings V;
A synchronous motor section is constructed by arranging a plurality of permanent magnets relative to C, and a cage-shaped conductive section is arranged between each of the -ml permanent magnets of this synchronous motor section to form a cage-shaped inducer. An electric motor characterized in that it is completely equipped with a rotor comprising a rotor, and a rotary mechanism capable of adjusting the relative rotation wh of the facing positions #l of the front ml-th and second stators. (2) A 1-ton watch characterized by having a stator and rotor arranged face-to-face to form an open/kill air gap type.
Electric motor as described in Section 1 of ILF Cumulative Yoke