Maglev Bearing Stator Winding With Parallel Replaceable Coils
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Solution Overview
Problem
The existing magnetic levitation bearing stator winding requires replacement of entire phases when a single coil is damaged, leading to inefficiencies in maintenance, high labor and material costs, and increased inductance, which slows down controller response times.
Innovation Solution
The magnetic levitation bearing stator winding is designed with coils divided into groups, each connected in parallel, allowing for separate replacement of damaged coils and reducing inductance, while the flexible wiring method improves adaptability and resistance to external shocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one coil in one winding is damaged, then the whole phase of coils needs to be replaced, but this increases the labor and material cost of coil maintenance and reduces the efficiency of maintenance
Solution Approach 1:
The winding is divided into multiple independent coils instead of being a single continuous structure. Each coil can be independently replaced without affecting other coils in the same phase, enabling modular maintenance and significantly improving repair efficiency.
2Reliability
If the whole phase of coils is replaced when one coil is damaged, then reliability is maintained, but this increases the labor and material cost
Solution Approach 1:
The winding structure is segmented into replaceable coil modules. When one coil fails, only that specific coil needs to be replaced rather than the entire phase, reducing material consumption and cost while maintaining system reliability.
3Device complexity
If traditional winding method is used, then the winding structure is simple, but the inductance in the winding coil is large, which increases the response time of the controller
Solution Approach 1:
The winding is divided into multiple separate coils with individual winding paths. This segmentation reduces the total inductance of each coil compared to a single long continuous winding, thereby reducing the electrical time constant and improving controller response time.
Solution Approach 2:
The winding coils are arranged in a three-dimensional space around the stator teeth rather than being laid out in a single plane. This spatial distribution reduces the magnetic path length and inductance while maintaining the required magnetic field generation capability.
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 approach reduces maintenance costs and time, enhances the magnetic levitation bearing's ability to resist external shocks, and minimizes differences in resistance values between phases, improving overall efficiency and stability.
Implementation Method 1
When current is passed in the winding, the winding coil converts electric field into magnetic field, which generates electromagnetic force to levitate the rotor
Implementation Method 2
Magnetic levitation bearing is a new type of support bearing that uses magnetic field force to levitate the rotor in space and realize no contact between the stator and rotor
Data Source
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AI summary
The present application relates to a magnetic levitation bearing, stator, winding and method of making thereof, motor and compressor. The stator winding comprises multiple phase windings. Each phase of the winding comprises at least two coil units connected in parallel with each other, and the coil units comprises one or more coils. When a coil in a phase winding is damaged, only the corresponding coil needs to be replaced, avoiding the waste of human and material resources caused by the replacement of the whole phase winding and improving the efficiency of maintenance. Moreover, this way of wiring between coils is more flexible, improving the diversity and adaptability of the way of connecting coils in the winding, also being able to reduce the inductance of the coil, shortening the response time of the controller and greatly improving the resistance of the magnetic levitation bearing to outer impact. In addition, all the coils in this application are the same, and the winding method is the same, which is convenient for winding production with the help of machines and can avoid errors in the manual winding process, thus improving the winding efficiency and qualification rate.