Superconducting Synchronous Motor Stator Field Windings
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Solution Overview
Problem
The complexity of the exciter and cooler structures in traditional superconducting synchronous motors, due to the rotation of superconducting field windings, leads to difficulties in control and frequent breakdowns.
Innovation Solution
Configuring superconducting field windings as part of the stator, with first and second inductors having hooked magnetic poles that are alternately engaged, allowing the windings to be fixed and not rotated, simplifying the exciter and cooler structures and facilitating efficient magnetic field generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If superconducting field windings are configured as part of the rotor and rotated along with the rotor, then the motor can generate strong magnetic field, but the structure of exciter and cooler becomes complicated and control becomes difficult
Solution Approach 1:
The patent inverts the conventional configuration by placing superconducting field windings in the stator instead of the rotor. This allows the windings to remain stationary while the armature windings rotate, eliminating the need for complex rotating exciter and cooler structures while maintaining strong magnetic field generation capability
Solution Approach 2:
The patent extracts the superconducting field windings from the rotating rotor assembly and places them in the stationary stator. This separation allows the field-generating component to remain fixed, simplifying the exciter and cooler structures that no longer need to accommodate rotation
2Ease of operation
If superconducting field windings are rotated along with the rotor, then the motor can operate as a synchronous motor, but breakdowns occur frequently due to complex structure
Solution Approach 1:
By inverting which component rotates (armature instead of field windings), the patent eliminates mechanical complexity in the superconducting winding assembly, reducing failure points and improving reliability while maintaining synchronous operation capability
Solution Approach 2:
The stationary configuration of superconducting field windings allows them to self-cool more effectively and simplifies the cooling system, reducing the likelihood of thermal-related failures and improving overall system reliability
3Device complexity
If superconducting field windings are configured as part of the stator, then the exciter and cooler structures are simplified, but the overlapping area of armature winding and inductors needs to be increased
Solution Approach 1:
The patent employs hooked magnetic poles that extend in the axial direction, utilizing the third dimension (length) to increase the effective overlapping area between armature windings and inductors without increasing radial or circumferential dimensions, thus maintaining compact design while improving magnetic coupling
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the exciter and cooler structures, improves the efficiency of the motor by increasing the overlapping area of armature windings and inductors, and enhances the magnetic field generation, reducing breakdowns and improving operational efficiency.
Implementation Method 1
A synchronous motor with superconducting windings, which are coils with superconducting wires wound therearound, can generate a strong magnetic field without the need to use an iron core therein
Implementation Method 2
In order for superconducting windings to maintain its superconducting state, the superconducting wires need to be continuously cooled
Implementation Method 3
copper windings may be used as armature windings for generating an alternating current (AC) magnetic field. In a synchronous motor in which tri-phase AC power is supplied to an armature windings
Data Source
AI summary
A superconducting synchronous motor having a simple and stable structure is provided. The superconducting synchronous motor according to one embodiment of the present invention comprises: a rotary shaft; a rotation core mounted at the rotary shaft so as to be rotated by connecting with the rotary shaft; and hooked magnetic poles extending from one end of the rotation core in a longitudinal direction. Each of the hooked magnetic poles is composed of first and second inductors of a magnetic material alternately engaged with each other and a superconducting wire to be wound, and comprises a first superconducting field winding and a second superconducting field winding fixed closely at the other end of a first inductor rotation core and the other end of a second inductor rotation core, respectively. Each of the first superconducting field winding and the second superconducting field winding excites the first inductor and the second inductor to different poles.