C-Shaped Stator Assembly Opposite Winding Termination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stator assemblies for electric machines face challenges in size, weight, manufacturing cost, efficiency, reliability, and noise, particularly in the termination scheme of windings which can be complex and bulky.
Innovation Solution
The stator assembly features c-shaped stator cores with windings wound in opposite directions on adjacent cores, allowing for simplified termination by grouping similarly charged ends and reducing the number of connections needed, which can be connected through a termination block with bridging terminals, thereby minimizing the size and complexity of the assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional winding termination schemes are used with all windings wound in the same direction, then each winding end requires separate connection, but this increases the number of connections and termination block size
Solution Approach 1:
The patent merges multiple winding ends that have the same electrical polarity into single connection groups. By winding adjacent stator cores in opposite directions, winding ends that would normally require separate connections are now electrically equivalent and can be connected together, reducing the total number of connections needed at the termination block.
Solution Approach 2:
The patent inverts the traditional approach by winding adjacent stator cores in opposite directions rather than all in the same direction. This inversion causes winding ends that are physically adjacent to have the same electrical polarity, enabling them to be grouped together for connection and reducing termination block requirements.
2Reliability
If each winding end is connected separately to the termination block, then reliable electrical connections are achieved, but the number of terminals and overall assembly size increases
Solution Approach 1:
Multiple winding ends with the same electrical polarity are merged into single connection groups. The opposite direction winding ensures that adjacent winding ends have equivalent electrical potential, allowing them to be safely connected together while maintaining electrical reliability and reducing the total number of separate connections.
3Ease of manufacture
If more terminals are provided in the termination block for separate winding connections, then all winding ends can be connected, but the termination block size and assembly complexity increase
Solution Approach 1:
The termination block design merges multiple winding connections into fewer terminal groups. By combining winding ends with identical electrical polarity into single terminals, the termination block requires fewer terminals and becomes less complex while still providing complete electrical connectivity for all windings.
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 configuration results in a smaller, more reliable, and cost-effective stator assembly that reduces the number of connections required, leading to a more compact and efficient electric machine design.
Implementation Method 1
In order to induce an electric field in the c-shaped stator core 2, current is passed through the windings 3
Data Source
AI summary
A stator assembly including at least one pair of c-shaped stator cores, each c-shaped stator core having a bobbin, and a winding wound around each bobbin, wherein the windings on each adjacent pair of c-shaped stator cores are wound in opposite directions.