Dual-Mode Electrical Machine With Flywheel Energy Generation
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Solution Overview
Problem
Existing electrical systems, such as motors and generators, operate in a single mode, limiting their functionality and efficiency, and existing dual-mode systems require multiple motors, complex transmissions, and permanent magnets that degrade over time.
Innovation Solution
A magnetic power electricity generating system with a first electrical machine that can operate in both motor and generator modes, featuring a stator with dual coils and a control unit to switch between operating modes, and a flywheel to maintain speed for energy generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single electrical machine operates in both motor and generator modes, then device complexity is reduced and energy efficiency is improved, but control complexity increases
Solution Approach 1:
The patent applies multi-functionality by designing a single electrical machine that can operate in both motor mode (driving the flywheel) and generator mode (generating electricity from the flywheel). This eliminates the need for separate motors and transmission assemblies, directly reducing device complexity while maintaining operational versatility through dual-coil winding configurations and mode-switching control
Solution Approach 2:
The patent segments the electrical machine into two independent coil windings (first and second coils) that can be independently controlled. This segmentation allows the control system to selectively activate either coil or both coils simultaneously, enabling smooth transitions between motor and generator modes while managing control complexity through modular switching
2Power
If permanent magnets are used in the generator rotor, then generator performance is improved, but reliability decreases over time due to magnetic force degradation
Solution Approach 1:
The patent replaces permanent magnets with electromagnets (coil windings) that can be actively controlled and replaced if needed. While permanent magnets provide strong initial magnetic fields, electromagnets offer the advantage of controllable magnetic strength and can be replaced or adjusted without degrading over time, improving long-term reliability
Solution Approach 2:
The patent changes the magnetic field generation approach from fixed permanent magnets to variable electromagnets. By controlling the current through the coil windings, the magnetic field strength can be adjusted dynamically, and the system can switch between using the first coil, second coil, or both coils to generate the required magnetic field, providing flexibility and reliability
3Adaptability or versatility
If dual coil windings are used in the stator, then operational versatility is improved, but manufacturing complexity increases
Solution Approach 1:
The patent divides the stator winding into two separate coil windings (first and second coils) that can be manufactured and assembled independently. This segmentation allows for standardized manufacturing processes for each coil type, reducing overall manufacturing complexity despite the increased versatility of having multiple winding configurations available
Solution Approach 2:
The dual coil windings are designed with the same number of magnetic poles but different rated output powers, allowing the electrical machine to operate in multiple modes (motor mode with either coil, generator mode with either coil, or combined modes). This universal design approach enables a single stator structure to support various operational requirements without requiring multiple different stator assemblies
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
Enables efficient energy generation and supply to external loads by switching between motor and generator modes, reducing energy consumption and eliminating the need for multiple motors and complex transmissions.
Implementation Method 1
the first electrical machine is operated in a motor operating mode and the second operating mode is that the first electrical machine is operated in a motor operating mode and a generator operating mode simultaneously
Implementation Method 2
a flywheel to maintain speed for energy generation
Data Source
AI summary
A magnetic power electricity generating system comprises an electrical machine unit and a control unit. The electrical machine unit comprises a first electrical machine with a first operating mode and a second operating mode. The first operating mode is that the first electrical machine is operated in a motor operating mode and the second operating mode is that the first electrical machine is operated in a motor operating mode and a generator operating mode simultaneously. The control unit is electrically connected respectively to the electrical machine unit and an external power supply for controlling the first electrical machine to be operated in the first operation mode or in the second operation mode. The magnetic power electricity generating system may further comprise a first flywheel coupled with the first electrical machine to enable the first electrical machine to supply electrical energy to external loadings.