Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2000-05-05
2003-09-09
Le, Dang Dinh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S216006, C310S257000
Reexamination Certificate
active
06617739
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a rotary electric machine having a bobbin type electromagnet and an electromagnetic apparatus and, in particularly to, in an electric motor and a generator and an electromagnetic apparatus using singly a magnet and an electromagnet and using the magnet and the electromagnet together with and in the electric motor and the generator and the electromagnetic apparatus a magnetic pole structure and the winding structure and a combination of a magnetic pole and a winding structure wherein an output improvement and an efficiency improvement and a productivity of a magnetic pole iron core and an electric assembly working etc. can be improved remarkably.
The present invention relates to a rotary electric machine using a magnet and an electromagnetic machine and apparatus and in particularly to an electric motor having a rotor in which a magnet is used singly and a magnet is used together with an electromagnet and a generator and an electromagnetic machine and apparatus where to reduce a starting torque and a cogging a skew structure is provided to a slot formed between a stator and an iron core being arranged oppositely and relates to a magnetic pole structure durable fully for a centrifugal force during a high speed rotation.
In a stator of a generator and an electric motor and a winding type rotor according to the prior art, a winding is assembled and manufactured to a slot which is provided on a laminated electromagnetic steel plate and is provided to use a winding insertion. A winding end portion connection after the winding assembly and a formation and a fixing of an end coil are very complicated workings and these workings are high in cost and a working process is long. Further, it invites a lowering of a reliability of an insulation destroy etc. in use due to an injury at the working process, and a twining and an interference between a narrow slot and the winding, and a lowering of a slot occupation rate (normally 50%) for making good a workability of an assembling working.
Further, it invites a cost increase due to an extension of the end coil, and an efficiency lowering and an output lowering etc. due to a resistance loss increase of an end coil portion and an increase of a leakage magnetic flux. Further, it is difficult to carry out a machinery performance of the electric assembly working and in a case where the machinery performance is carried out it requires much cost for an equipment cost. Further, in a case of the electric machine having the low voltage and a middle and large capacity, the diameter of the winding becomes large and the working performance becomes bad further and the widely high cost occurs.
To reduce the starting torque of the electric motor and the generator, a laminated layer iron core of the stator and the rotor is shifted off with the straight shape or the zigzag shape to the circumferential direction and the skew formation is carried out. In this case, the cross-sectional area of the slot becomes small and the working performance etc. of the die-casting working of the winding and the rotor becomes bad further. Further, in a case of the high voltage electric machine etc., the insulation between the windings and the phases is difficult, when the insulation is carried out in the prior art iron core winding, to cope with this it is necessary to make large the laminated layer iron core and make large the slot area, accordingly the wide increase in the cost is invited.
Further, according to the prior art iron core winding structure, the electric machine used in the high temperature environment has a limitation 200 C by summing up the surrounding temperature and the temperature raise value of the coil and when it tends to raise the above stated limitation temperature it is necessary to use the ceramics material etc. having the heat resistance to the insulation structure, the structure body and the bearing member. Further, to realize this since the slot area is increased remarkably, it is impossible to carry out at the cost aspect and the technical aspect.
In a rotor of a generator and an electric motor according to the conventional technique, in generally a cylindrical shape magnet is used and to this during a magnetization time at a boundary between magnetic poles a space having a skew structure is provided. In this case, it requires an enormous cost to a magnetization equipment and it is not suited to a middle and a small mass production. Further, in the cylindrical shape magnet, since there is a limitation about a magnetic field formation, it is not suited to a high output and a high efficiency. Further, a division iron core is not used up to now and it is not taken a consideration about a centrifugal force accompanying with the division structure.
SUMMARY OF THE INVENTION
The objects of the present invention are to solve the above stated problems in a rotary electric machine, which are (1) a simplification of a winding structure according to an iron core structure, an iron core material and an iron core structure, (2) a simplification of a starting improvement, (3) a realization of a complex function electric machine, (4) a realization of a high heat resistance electric machine, etc., (5) a realization of a starting improvement and a cogging reduction by forming a skew structure formation, (6) a productivity improvement, and (7) a centrifugal force countermeasure during a high rotation necessary for a division iron core, etc.
As to (1) the simplification of the winding structure according to the iron core structure, the iron core material and the iron core structure, to make simple the winding structure of the stator and the rotor of the alternating current electric machine, for example, the winding is performed enable to form a magnetic field formation of a magnetic pole with a bobbin structure etc., and an iron core is formed structurally to have an eddy current in an alternating current magnetic field and to is taken into the consideration about a working performance, and further a material of the iron core is prepared by forming and constituting with a sintering material of an iron and a laminated layer iron core of an electromagnetic steel plate.
Accordingly, a winding performance becomes simply and the stator and the rotor having a high reliability, a low cost and a high mass-production performance can be provided. Further, to realize the stator and the rotor for a multi-phase alternating current electric machine, a magnetic pole structure having a projection portion is employed to form a space structure and an overlap structure between the magnetic pole portion and the another phase magnetic pole.
Accordingly, an electromagnetic combination between each phases is strengthened and at the same time by carrying out the systematic separation, the systematic dispersion, and the systematic arrangement of the each phases magnetic pole, for example, the effective formation of the rotation magnetic field can be formed. Further, to strengthen further the electromagnetic combination between each phases, between other phases mutually by carrying out the winding of the other phase, accordingly the magnetic filed formation of the rotation magnetic field can be carried out smoothly and then the electric machine having the high efficiency and the small vibration noise can be realized.
As to (2) the simplification of the starting improvement, using the bobbin structure electromagnet stated in the above item (1), each magnetic pole and each phase magnetic pole is shifted off with the linear shape or the zigzag shape to the circumferential direction, accordingly to the stator, the rotor, and the both of the stator and the rotor it is possible to provide the skew structure.
As to (3) the realization of the complex function electric machine, using the bobbin structure electromagnet stated on the above item (1), by forming plural the stator and the rotor of the electric motor and the generator toward the axial direction, it is possible to constitute the complex function electric machine in a single electric
Antonelli Terry Stout & Kraus LLP
Dinh Le Dang
LandOfFree
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