Dual-Commutator Electric Motor for Parallel Internal Current Generation
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Solution Overview
Problem
Conventional DC electric motors suffer from inefficiencies due to separate, opposing polar currents in the rotor windings and limited rotary switching schemes, leading to suboptimal energy usage and generation capabilities.
Innovation Solution
A novel electric motor design featuring V-shaped field windings with overlapping coils that allow for internal current generation during the 'off' period, utilizing a unique winding pattern and commutator configuration to achieve a current on/off ratio less than 1:1, enabling parallel generation of current while powering successive windings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional rotary switching schemes with on/off ratio of 1:1 or greater are used, then the motor operates with established switching patterns, but the energy efficiency is suboptimal and generation capability is limited
Solution Approach 1:
The patent implements periodic action by switching field coils between 'on' and 'off' states in a cyclic manner, where each coil receives current for a portion of the rotation cycle and remains off for another portion. This periodic switching enables the motor to achieve both efficient energy usage and internal generation capability, as unpowered coils can induce current during their off periods while powered coils drive the rotor.
Solution Approach 2:
The patent achieves continuity of useful action by ensuring that while some field coils are powered to drive the rotor, other coils are simultaneously generating current through electromagnetic induction. This overlapping of motor and generator functions across different coils ensures continuous useful action without interruption, improving both energy efficiency and generation capability.
2Force
If separate, opposing polar currents are used in rotor windings, then the motor produces torque through magnetic engagement, but there is loss of efficiency due to opposing currents
Solution Approach 1:
The patent divides the rotor windings into multiple electrically isolated field coils that can be independently controlled. Each coil can be switched on or off independently, allowing the system to avoid having all coils carry opposing currents simultaneously. This segmentation enables selective activation of coils to produce torque while others generate current, reducing energy loss from opposing currents.
Solution Approach 2:
The patent introduces dynamic control of field coil activation through rotary switching mechanisms. The switching patterns dynamically adjust which coils are powered and which are generating at any given moment during rotation. This dynamic approach allows the system to optimize torque production while minimizing energy loss from opposing currents by coordinating the activation states of different coils.
3Device complexity
If conventional DC motor design with field windings on rotor is used, then the motor structure is established, but the design lacks internal parallel generation capacity
Solution Approach 1:
The patent implements multi-functionality by designing the field coils to serve dual purposes: acting as motor windings when powered and as generator windings when unpowered. The same physical structure (field coils on the rotor) performs both motor and generator functions simultaneously in different coils, enabling the motor to have internal parallel generation capacity without adding separate generator components.
Solution Approach 2:
The patent merges the motor and generator functions into a single integrated structure. The field coils are configured to participate in both motor operation (when powered) and current generation (when unpowered). This merging of functions into the same structural elements allows the motor to achieve generation capacity while maintaining a conventional motor structure, avoiding the need for separate generator components.
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 design significantly enhances motor efficiency by allowing current generation during the off period, resulting in improved power usage and generation capacity, particularly in battery-linked systems, with compact and scalable units.
Implementation Method 1
Conventional DC electric motors require a current to create successive magnetic fields in the rotating rotor field windings and thereby induce a torque on the motor shaft
Implementation Method 2
When there is no current input to the field coils, the rotor and shaft may be mechanically spun or driven to move field coils through the fields of the stator magnets, to induce and produce a current output
Data Source
AI summary
An electric motor with shaft, rotor and stator. The stator has a pair of magnets amd the rotor has a number of rotor poles, and the same number of electrically isolated pole windings and inter-pole spaces. The motor has first and second commutators, each divided into equally arc spaced commutator segments, the same number as the number of rotor poles.Each winding begins at a segment of the first commutator, passes through a first inter-pole space and back through an inter-pole space two spaces counterclockwise of the first space to complete a first winding turn, and after pre-selected number of winding turns, passes back through an inter-pole space three spaces counterclockwise of the first space for a second same number of winding turns as the first pre-selected number. The winding is completed at an segment of the second commutator arc-aligned at the same arc degree on the rotor shaft with the first commutator.In the electric motor the two magnets are separate by a gap between them such that a line through the gap is 90 degrees out of alignment with a line between a pair of oppositely signed motor brushes.The electric motor has two brush sets, with each of the two brush sets each having a pair of oppositely disposed brushes electrically isolated from each other and on opposite sides of the commutator.A method for parallel simultaneous internal generation of an output current in a motor, while the motor is drawing current to spin a motor shaft is also presented.