Alternator Power Supply Device with Hexagonal Coil Switching
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Solution Overview
Problem
Conventional motor vehicle alternators require a large number of electronic components for voltage and current regulation, leading to increased size, complexity, and cost due to the need for extensive thermal dissipation, which complicates their integration in limited vehicle spaces.
Innovation Solution
A power supply device with six armature coils in hexagonal coupling, connected to a single bridge rectifier with thyristors and diodes, allowing for switching between series and parallel connections to optimize voltage and current delivery based on engine speed, reducing the number of components and overall alternator size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple independent three-phase windings with separate rectification devices are used to achieve high performance at varying speeds, then voltage and current delivery is improved, but the number of electronic components increases
Solution Approach 1:
The patent merges multiple armature coils into a single integrated structure with one common bridge rectifier. Instead of using separate rectification devices for each three-phase winding, the invention combines all coils into one system that shares a single rectifier, thereby reducing the number of electronic components while maintaining the capability to deliver high voltage and current through polygonal coupling modes.
Solution Approach 2:
The single bridge rectifier in the invention serves multiple functions that would traditionally require separate rectification devices. By using polygonal coupling of armature coils, the same rectifier can handle rectification for all coils simultaneously, making the system more universal and reducing component count while preserving performance across varying engine speeds.
2Power
If a large number of electronic components are used for rectification and control, then alternator performance is improved, but the overall dimension of the alternator increases
Solution Approach 1:
The invention reduces the overall volume by merging multiple rectification systems into a single bridge rectifier. This consolidation eliminates redundant components and reduces the space required for electronic components, allowing the alternator to maintain high performance while occupying less space in the restricted vehicle environment.
3Volume of moving object
If electronic components are placed close together to reduce size, then space constraints are satisfied, but thermal dissipation becomes more difficult
Solution Approach 1:
By consolidating all rectification functions into a single bridge rectifier, the invention reduces the total number of heat-generating components. This single-point concentration of thermal load is more manageable than multiple distributed heat sources, simplifying thermal dissipation while maintaining compact dimensions.
4Power
If multiple rectification devices are used to achieve high performance, then voltage and current delivery is improved, but the cost of the alternator increases
Solution Approach 1:
The invention reduces manufacturing cost by merging multiple rectification devices into a single bridge rectifier. This consolidation reduces the number of electronic components that need to be manufactured, assembled, and tested, thereby lowering production costs while maintaining the capability to deliver high voltage and current through the polygonal coupling of armature coils.
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 solution enables a compact, high-performance alternator with reduced component count, simplified thermal dissipation, and lower costs, while maintaining or exceeding the performance of conventional alternators across varying engine speeds.
Implementation Method 1
an alternator fitted to a motor vehicle comprises a stator in which is placed a rotor, a shaft of which is rotationally driven by the vehicle's internal combustion engine
Implementation Method 2
connected to a single bridge rectifier comprising a set of controllable elements with which switching can be carried out
Data Source
AI summary
An electrical supply device includes a set of armature coils which are coupled together in a polygonal mode. The coils are connected to a single bridge rectifier which includes a set of controllable elements allowing switching between a first operating mode in which some of the coils are electrically connected in series and a second operating mode in which all of the coils are electrically connected in parallel. An alternator for a motor vehicle includes the disclosed supply device.