Ironless Disc Generator Winding Layout for Auxiliary Power Output
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Solution Overview
Problem
Traditional generator structures fail to meet the need for multiple voltage outputs efficiently, leading to reduced power density and space utilization, as they are designed to provide only symmetrical voltage phases with limited flexibility for auxiliary power supplies.
Innovation Solution
A disc-type ironless permanent magnet synchronous generator with a stator coil disc and paired permanent magnet rotor discs, featuring a main winding and an auxiliary winding with independent auxiliary coils arranged in an uneven distribution, allowing for separate high-power and low-power outputs without compromising power density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional generator winding structure is used to provide only symmetrical voltage phases, then the generator structure is simple, but the generator cannot meet the needs of multiple voltage outputs and has low power density
Solution Approach 1:
The stator winding is segmented into two independent parts: main winding and auxiliary winding. The main winding provides symmetrical three-phase voltages for the main power output, while the auxiliary winding provides single-phase or multi-phase voltages for auxiliary power supplies. This segmentation allows the generator to meet multiple voltage output requirements without compromising the simplicity of each individual winding structure.
Solution Approach 2:
The generator is designed with multi-functionality by incorporating both main winding and auxiliary winding that can operate independently or together. The main winding serves the primary power generation function, while the auxiliary winding provides additional voltage outputs for control systems, auxiliary equipment, or special load requirements, making the generator universally applicable to diverse power supply needs.
2Adaptability or versatility
If one or more phases of a multi-phase generator are designed as auxiliary power supplies, then the generator can provide multiple voltages, but the output power and space utilization decrease sharply
Solution Approach 1:
The generator separates the power generation function into two independent segments: main winding dedicated to main power output and auxiliary winding dedicated to auxiliary power supply. This segmentation ensures that the auxiliary power supply does not compromise the main output power, as each winding is independently designed and positioned to optimize its respective power contribution.
Solution Approach 2:
The auxiliary winding is arranged in a different spatial dimension or configuration compared to the main winding. The auxiliary winding is placed in the stator slots between the main winding coils or in dedicated auxiliary slots, utilizing the radial and axial space efficiently. This dimensional arrangement allows both windings to coexist without significantly reducing the main output power while providing the required auxiliary power.
3Adaptability or versatility
If one or more phases of a multi-phase generator are designed as auxiliary power supplies, then the generator can provide multiple voltages, but the space utilization of the generator decreases
Solution Approach 1:
The auxiliary winding is nested within the existing stator structure, utilizing the space between main winding coils or in dedicated auxiliary slots. The auxiliary winding coils are placed in the available stator slot space without requiring additional external space, effectively nesting the auxiliary power supply function within the main generator structure.
Solution Approach 2:
The auxiliary winding utilizes the radial and axial dimensions of the stator effectively. By arranging auxiliary coils in the radial space between main winding coils or in dedicated auxiliary slots along the axial length, the design maximizes space utilization in three-dimensional space, allowing auxiliary power supply without significantly increasing the overall generator footprint.
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
The new generator structure effectively provides multiple voltage outputs, optimizing space usage and maintaining power density by allowing separate power supplies for main and auxiliary loads, enhancing the generator's ability to meet diverse power requirements.
Implementation Method 1
a disc-type ironless permanent magnet synchronous generator comprises a stator coil disc and a pair of permanent magnet rotor discs positioned on two sides of the stator coil disc and arranged with a gap therebetween
Data Source
AI summary
Provided is a disc-type ironless permanent magnet synchronous generator powered by an auxiliary power supply, which comprises a stator coil disc and a pair of permanent magnet rotor discs (1) positioned on two sides of the stator coil disc and arranged with a gap therebetween, a circle of main coils (3) are fixedly arranged on the stator coil disc around a center of the disc, the main coil is a main winding of an electric motor to output electric energy, an auxiliary winding independent from the main winding is arranged on a circumference formed by the main coils (3) in a surrounding manner, and output power of the auxiliary winding is less than output power of the main winding.