Variable Stroke Electrodynamic Machine Swash Plate Control
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Solution Overview
Problem
Electrodynamic machines lack a convenient method to regulate back electromotive force (EMF) as speed increases, leading to reduced torque and uncontrollable operation as motors, and varying electrical potential with rotational speed and load variations as generators.
Innovation Solution
An electrodynamic machine with a swash plate that rotates about a parallel axis, allowing for a controllably variable angle and linear displacement between the magnetic field generator and armature, enabling control of the electrodynamic interaction through a controller that adjusts the swash plate angle in response to EMF, phase current, and torque changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the electrodynamic machine operates at increasing speed, then the back EMF increases, but the torque falls off and the motor becomes uncontrollable
Solution Approach 1:
The patent applies the Dynamics principle by making the magnetic flux dynamically adjustable through the swash plate mechanism. The swash plate angle can be varied in real-time to change the linear displacement between magnetic field generator and armature, thereby dynamically regulating the back EMF to maintain controllable operation at higher speeds. This transforms the static flux system into a dynamic one that adapts to speed variations.
Solution Approach 2:
The patent implements Parameter changes by varying the swash plate angle to change the linear displacement parameter. This parameter change directly affects the magnetic flux and back EMF characteristics, allowing the system to maintain optimal torque-speed performance by adjusting the displacement parameter in response to operating conditions.
2Power
If the electrodynamic machine generates electrical potential proportional to rotational speed, then the generator output varies with load, but there is no convenient way to regulate the generated electrical potential
Solution Approach 1:
The swash plate mechanism provides dynamic regulation capability by allowing real-time adjustment of the linear displacement between magnetic field generator and armature. This dynamic adjustment enables convenient regulation of the generated electrical potential in response to load variations, transforming a fixed-characteristic generator into one with adaptable output characteristics.
Solution Approach 2:
The system incorporates feedback control where the swash plate angle is adjusted in response to detected changes in EMF, phase current, and torque. This feedback mechanism enables automatic regulation of the electrical potential output, making the generator易于操作 (easy to operate) under varying load conditions without manual intervention.
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 solution allows for regulation of back EMF and electrical potential, maintaining motor performance and generator efficiency by varying the linear displacement between the magnetic field generator and armature, enabling controlled speed and load adjustments.
Implementation Method 1
A swash plate rotates about a second axis parallel to and offset from the first axis. The swash plate comprises a surface in slidable engagement with an end of the magnetic field generator or an end of the armature. As the swash plate rotates, the point at which the angled swash plate surface intersects the first axis at the end of the magnetic field generator or armature will move back and forth along the first axis.
Implementation Method 2
electrodynamic machines utilize dynamic motion between magnetic fields and electrical currents to convert types of energy. For example, generators convert mechanical energy to electrical energy via the interaction of rotating magnetic fields and coils of wire, wherein motors convert electrical energy to mechanical energy via the interaction of magnetic fields.
Implementation Method 3
electrodynamic machines utilize dynamic motion between magnetic fields and electrical currents to convert types of energy. For example, generators convert mechanical energy to electrical energy via the interaction of rotating magnetic fields and coils of wire, wherein motors convert electrical energy to mechanical energy via the interaction of magnetic fields.
Implementation Method 4
a permanent magnet machine (PMM), operating in a generating mode, utilizes permanent magnets to generate a constant magnetic field, which is rotated via the mechanical energy supplied by a prime mover such that the rotating magnetic field interacts with the stator coils to provide an output voltage.
Data Source
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AI summary
An electrodynamic machine (100) is disclosed that includes a magnetic field generator (123) and an armature in a linear moving relationship with each other along a first axis. A swash plate (106) rotates about a second axis parallel to and offset from the first axis. The swash plate (106) comprises a surface in slidable engagement with an end of the magnetic field generator (123) or an end of the armature. This swash plate surface is at a controllably variable angle to the second axis, and provides provides a linear displacement between the magnetic field generator (123) and the armature in response to rotation of the swash plate (106).