Electromotive Machine Heat Dissipation Plate With Through Slots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electromotive machines face inefficiencies due to resistive losses and temperature limitations caused by Ohmic heating, which restrict the power output and safety of the machines.
Innovation Solution
Incorporating a heat dissipation plate with through slots that face the coils to conduct heat away and minimize eddy currents, allowing for increased current supply and power generation while reducing inefficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If current is increased to boost power output, then power generation increases, but temperature rises due to Ohmic heating
Solution Approach 1:
A heat dissipation plate is introduced as an intermediary component between the coils and the environment. This plate conducts heat away from the coils through its thermally conductive material, serving as a mediator that transfers thermal energy from the heat-generating coils to a dedicated heat dissipation structure, thereby enabling higher current operation without excessive temperature rise
Solution Approach 2:
The heat dissipation plate is segmented with through slots that divide the continuous plate structure into multiple sections. This segmentation serves dual purposes: it maintains thermal conduction pathways while creating gaps that reduce eddy current formation, thus allowing efficient heat removal without the harmful effects of continuous conductive paths
2Temperature
If a solid plate is used for heat dissipation, then heat conduction improves, but eddy currents increase causing energy loss
Solution Approach 1:
The plate is divided into multiple sections by through slots that completely penetrate the plate structure. This segmentation interrupts the continuous conductive path, preventing large-scale eddy currents from forming while still maintaining sufficient thermal conduction through the remaining plate material and slots
Solution Approach 2:
Different regions of the plate structure serve different functions: the solid portions provide thermal conduction pathways, while the through slots provide electrical isolation to prevent eddy currents. This local differentiation of properties allows the plate to simultaneously achieve heat dissipation and energy loss reduction
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 effectively increases the rate of heat removal, enabling higher power output without exceeding temperature limits, thus enhancing the efficiency and safety of electromotive machines.
Implementation Method 1
The plate may comprise a plurality of portions, each portion including one or more through slots, for example a plurality of through slots. Each portion of the at least one plate may face a corresponding coil and/or may be located relative to the coil such that, in use, heat from the coil flows into said portion (and therefore the plate).
Implementation Method 2
The plate may have a plurality of through slots formed therein... The plate may comprise a plurality of portions, each portion including one or more through slots... Each portion of the at least one plate may face a corresponding coil and/or may be located relative to the coil such that, in use, heat from the coil flows into said portion (and therefore the plate).
Implementation Method 3
The current carrying conductors that form the winding coils have an innate resistance to the flow of electrical current. The flow of electrical current through a resistance results in the loss of energy in the form of heat in a process known as Ohmic heating (also known as Joule heating or resistive heating).
Data Source
AI summary
An electromotive machine having a stator (122) comprising a plurality of coils (120) and a plate (10) is disclosed. The plate (10) has a plurality of through slots (15) formed therein. A portion of the plate (10) faces a corresponding coil (120) and is located relative to the coil (120) such that, in use, heat from the coil (120) flows into said portion. A transportation system (91) including such an electromotive machine is also disclosed. Also disclosed is a coil (20) for an electromotive machine comprising a conductor being wound in a plurality of turns and having two ends (25, 35) located on the outside of the coil (20).