Generator with Phase-Shifted Back-EMF Prevention Windings

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Solution Overview

Problem

Existing generators face efficiency issues due to back-electromotive force, which reduces rotational torque and power generation efficiency, as the polarity inversion of magnetic flux causes reverse rotational torque, making it difficult to extract electricity from windings effectively.

Innovation Solution

A generator configuration with two independent power generation mechanisms, where the phases are completely shifted, utilizing back-electromotive force prevention windings and switching windings to prevent rotational braking and enhance rotational driving force by aligning winding and gap sections with magnetic poles, and using capacitors to manage electromotive forces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If electricity is extracted from windings during rotation, then power output is achieved, but back-electromotive force generates reverse rotational torque reducing efficiency

Engineering Contradiction:

Improvepower outputVSAvoidenergy loss due to back-electromotive force

Core Design Contradiction:

PowerVSLoss of energy

Solution Approach 1:

The generator is divided into two independent power generation mechanisms (first and second mechanisms with separate armatures, windings, and rotor plates). This segmentation allows each mechanism to operate independently with phase-shifted electromotive forces, preventing the cumulative back-electromotive force that occurs in single-mechanism generators and reducing reverse rotational torque.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The two power generation mechanisms operate with completely phase-shifted periodic actions. When one mechanism generates electromotive force in a direction that creates back-electromotive force, the other mechanism simultaneously generates electromotive force in the opposite direction, creating counteracting effects that cancel out the reverse rotational torque while maintaining continuous power output.

Inventive Principle:

Principle #19Periodic action

2Power

If polarity inversion of magnetic flux is used to generate electromotive force, then electricity generation is achieved, but reverse rotational torque reduces rotational driving force

Engineering Contradiction:

Improveelectromotive force generationVSAvoidrotational driving force

Core Design Contradiction:

PowerVSForce

Solution Approach 1:

The second power generation mechanism acts as a counterweight to the back-electromotive force generated by the first mechanism. When the first mechanism experiences reverse rotational torque due to polarity inversion, the second mechanism simultaneously generates an equal and opposite rotational force, effectively canceling out the adverse effect and maintaining net rotational driving force.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

Solution Approach 2:

The system changes the phase parameter of electromotive force generation between the two mechanisms. By configuring the windings and magnetic pole arrangements such that the mechanisms operate with completely phase-shifted electromotive forces, the system transforms the problematic back-electromotive force into a beneficial counteracting force that maintains rotational momentum.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If single power generation mechanism is used, then device complexity is reduced, but power generation efficiency decreases due to back-electromotive force

Engineering Contradiction:

Improvestructure simplicityVSAvoidpower generation efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

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 configuration effectively prevents rotational braking from back-electromotive force, allowing for enhanced rotational drive power and improved power generation efficiency by ensuring phase-shifted electromotive force output in the two independent mechanisms.

Implementation Method 1

a first fixed permanent magnet (45) having a plural number of magnets on one side, and a second fixed permanent magnet (50) having the same number of magnets as the plural number on the other side... a first rotational permanent magnet (37) having the same number of magnets as the plural number... a second rotational permanent magnet (42) having the same number of magnets as the plural number

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS8581465B2Generator

Publication Date: 2013.11.12 FD CORPORATION

AI summary

A generator comprises: a stator plate having a first fixed permanent magnet including a plurality of magnets on one side and a second fixed permanent magnet including a plurality of magnets on the other side; a first armature having a first switching winding, a first output winding, and a first back-electromotive force prevention winding on a fixed first ring core; a second armature having a second switching winding, a second output winding, and a second back-electromotive force prevention winding on a fixed second ring core; a first rotor plate having a first rotary permanent magnet; and a second rotor plate having a second rotary permanent magnet. The first and second rotor plates are coupled to each other by a driving shaft.