Electric Machine Stator Parallel Lead Wire Configuration
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Solution Overview
Problem
Existing electric machine stators face challenges in efficiently connecting multiple phases of windings to terminal plates for both motor and generator operations, particularly in hybrid and electric vehicles, where flexible and reliable power transmission is crucial.
Innovation Solution
The electric machine stator incorporates a cylindrical core with radially disposed windings and parallel lead wire pairs that connect to terminal plates, allowing for secure and efficient electrical connections through welding, enabling flexible operation as both a motor and generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional winding connection methods are used in electric machine stators, then the structure is simple, but the power transmission efficiency and reliability are insufficient for hybrid and electric vehicle applications
Solution Approach 1:
The stator structure is segmented into distinct functional components: cylindrical core, radially disposed windings, terminal plates, and parallel lead wire pairs. This segmentation allows each component to be optimized independently while maintaining overall connection reliability through standardized interfaces between segments.
Solution Approach 2:
The lead wires are arranged in parallel configurations extending axially between the front surface and terminal plates, transitioning from traditional planar connections to three-dimensional spatial arrangements. This dimensional change enables multiple phases to be connected simultaneously with reduced interference and improved power transmission efficiency.
2Adaptability or versatility
If the stator is designed for single-mode operation (motor or generator), then the structure is simpler, but the adaptability for hybrid and electric vehicles requiring dual-mode operation is reduced
Solution Approach 1:
The stator is designed with universal functionality to operate in both motor and generator modes. The cylindrical core with radially disposed windings and parallel lead wire pairs can handle power flow in either direction, allowing the same structure to function as a motor when electrical power is supplied and as a generator when mechanical power is supplied.
Solution Approach 2:
The winding configuration employs dynamic characteristics through parallel lead wire pairs that can adapt to varying operational conditions. The radially disposed windings along the cylindrical core enable flexible magnetic field generation and detection, allowing the stator to dynamically switch between motor and generator operations based on vehicle needs.
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 enhances the stator's ability to transmit power efficiently in both motor and generator modes, supporting the diverse energy needs of hybrid and electric vehicles by ensuring reliable connections and flexible power management.
Implementation Method 1
In an electric motor, the stator generates a rotating magnetic field that drives the rotor
Implementation Method 2
In an electric generator, the stator is configured to convert a rotating magnetic field generated by rotation of the rotor in electrical current
Implementation Method 3
Each of the pairs of parallel lead wires electrically connects one of the terminal plates to one phase of the windings
Data Source
AI summary
An electric machine stator includes a cylindrical core, windings, a plurality of terminal plates, a plurality of parallel lead wire pairs. The cylindrical core extends axially between a front surface and a back surface. The windings have multiple phases and are disposed radially along the core. Each of the pairs of parallel lead wires extend axially between the front surface and one of the terminal plates. Each of the pairs of parallel lead wires electrically connects one of the terminal plates to one phase of the windings.