Dual-stator superconductive exciting field modulating motor

A technology of excitation field and double stators, which is applied in the field of field modulation motors, can solve the problems of limited motor power density, difficult space arrangement, complex motor structure, etc., and achieves the effects of easy transportation and on-site installation, compact structure and good cooling effect

Active Publication Date: 2015-09-02
SOUTHEAST UNIV
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Problems solved by technology

[0004] However, in the synchronous motor with conventional structure, the excitation winding is located on the rotor, not only the excitation current needs to be introduced through the brushes and slip rings, but also the cooling liquid needs to be input through the rotary seal, which makes the structure of the motor complex, high in cost and low in reliability; The stator excitation type motor (such as flux switching permanent magnet motor) is a superconducting excitation fl

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  • Dual-stator superconductive exciting field modulating motor

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Embodiment Construction

[0018] As shown in Fig. 1, in the figure, the first stator, the rotor and the second stator are concentrically arranged. From outside to inside, the first stator (outer stator) 1, the first air gap (outer air gap) 2, the rotor 3, the second air gap (inner air gap) 4 and the second stator ( Inner stator) 5; the first stator (outer stator) 1 includes a stator yoke 11, stator teeth 12 and an outer stator concentrated winding 13 embedded in an outer stator slot;

[0019] The rotor 3 includes rotor magnetically conductive core blocks 31 and non-magnetically conductive blocks 32 uniformly distributed along the circumference; the second stator 5 (inner stator) includes a non-magnetically conductive bracket 51 and a high-temperature superconducting excitation winding 52 fixed thereon . The first stator 1 (outer stator) has 12 teeth, each tooth is covered with a concentrated winding, and the windings on the 12 teeth are connected according to certain rules to form a three-phase symmet...

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Abstract

The invention discloses a dual-stator superconductive exciting field modulating motor comprising a first stator, a rotor, a second stator which are successively arranged from outside to inside or from left to right. A first air gap is formed between the first stator and the rotor. A second air gap is formed between the second stator and the rotor. The first stator comprises a stator yoke and an armature winding. The stator yoke is provided with a first side surface close to the rotor. The armature winding is arranged on the first side surface. The rotor comprises magnetic conductive iron core blocks and non magnetic conductive material blocks which are arranged at intervals. The second stator comprises a non magnetic conductive stator support and a high-temperature superconductive exciting winding fixed to the non magnetic conductive stator support. The dual-stator superconductive exciting field modulating motor is small in size, light in weight, high in efficiency, utilizes a characteristic that a high-temperature superconductive winding is suitable for DC, prevents liquid coolant rotary seal required by a conventional rotor excitation high-temperature superconductive motor, and is simple in structure. The stators of the motor are modular structures so as to be easy to transport and install. The motor has good application prospect in the field of offshore wind power.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a field modulation motor with superconducting excitation. Background technique [0002] With the rapid development of offshore wind power, ship electric propulsion, etc., higher and higher requirements are put forward for the technical indicators such as volume, weight, and efficiency of the motor system. Taking wind power generators as an example, with the development of wind power generation from land to sea, in order to improve power generation efficiency and reduce power generation costs per unit capacity, the capacity of a single unit is getting larger and larger. 5MW wind power generation units have been put into operation. Develop wind turbines with a capacity of 10MW or more. With the increase of the unit capacity, the weight and volume of the generating set become very large. For example, a 10MW ordinary permanent magnet direct drive wind turbine weighs up to 300 tons an...

Claims

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Application Information

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IPC IPC(8): H02K16/04H02K55/00
CPCH02K16/04Y02E40/60H02K55/04
Inventor 程明
Owner SOUTHEAST UNIV
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