Two-Rotor Wind Generator Counter-Rotation Efficiency
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Solution Overview
Problem
Existing wind turbines with single-rotor designs are inefficient in converting kinetic energy into electrical energy due to the time required for magnetic flux interaction, limiting their power generation capacity compared to turbines of the same size.
Innovation Solution
A two-rotor power generator system where both the magnetic wheel and voltage generator rotate on a common axis in opposite directions, with a rotating shield dividing the wind stream into two parts to enhance energy conversion efficiency, eliminating the need for a stator and utilizing stepper motors to control wind exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single-rotor design with stator is used, then the structure is simpler, but the power generation capacity is lower
Solution Approach 1:
The single rotor is divided into two independent rotors (magnetic wheel and voltage generator rotor) that rotate in opposite directions. Each rotor has its own drive wings and can be independently controlled, allowing simultaneous generation of magnetic flux and voltage while maintaining separate functional zones within the generator structure.
Solution Approach 2:
The invention transitions from a single-plane rotation to a dual-plane counter-rotation system. Both rotors share a common vertical axis but rotate in opposite directions, effectively utilizing the rotational dimension twice simultaneously. This doubles the frequency of magnetic flux interaction with the winding per unit time.
2Loss of time
If the magnetic wheel and voltage generator rotate in the same direction, then the control is simpler, but the time for magnetic flux interaction is longer
Solution Approach 1:
Instead of rotating both rotors in the same direction, the invention rotates them in opposite directions. The magnetic wheel rotates clockwise while the voltage generator rotor rotates counter-clockwise, causing their magnetic fields to interact more frequently and intensely with the winding, thereby reducing the time for effective magnetic flux interaction.
Solution Approach 2:
The counter-rotation creates a periodic interaction pattern where the magnetic fields of both rotors pass through the winding alternately and simultaneously. This periodic action occurs at double the frequency compared to single-rotor systems, increasing the rate of electromagnetic induction and power generation.
3Use of energy by moving object
If the wind acts on both rotors simultaneously, then the energy capture is maximized, but the rotor speeds become uncontrollable
Solution Approach 1:
The invention introduces variable geometry shutters that can dynamically adjust the opening area of each rotor's drive wings. By changing the effective surface area exposed to wind in real-time, the system can optimize energy capture while maintaining controllable rotor speeds. The shutters allow asymmetric adjustment for each rotor independently.
Solution Approach 2:
The system incorporates feedback control through shutters that respond to rotor speed conditions. When rotor speeds exceed desired levels, the shutters reduce the effective wind-catch area; when speeds are too low, the shutters increase exposure. This feedback mechanism maintains optimal operating speeds while maximizing energy conversion.
4Productivity
If a rotating screen with windows is added to divide wind streams, then the opposite-direction rotation is achieved, but the device complexity increases
Solution Approach 1:
The rotating screen structure serves multiple functions simultaneously: it divides the wind stream into two separate streams, provides structural support for both rotors, enables counter-rotation through its window configuration, and acts as a protective enclosure. This multi-functionality reduces the need for separate components for each function.
Solution Approach 2:
The invention merges the screen structure with the rotor housing and drive mechanism into a single integrated assembly. The screen is not a separate add-on but is combined with the rotor supports and shutter mechanisms, reducing the total number of discrete components and simplifying the overall structure despite the added functionality.
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 doubles the electromotive force generation per unit time, significantly increasing power production capacity and reducing the time for magnetic flux interaction, resulting in at least twice the energy output compared to traditional vertical-axis wind turbines.
Implementation Method 1
electric current is generated in the stator windings by the rotation a magnetiser (magnetic wheel) around them
Implementation Method 2
The force of the wind acting on their wings will always push them in opposite directions
Data Source
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AI summary
The wind power plant with two-rotor voltage generator is characterised by the introduction of a rotating screen into its construction to allow the generator to operate with two counter-rotating rotors. ( rotating in opposite directions the voltage generator and the magnet wheel ). The magnetic field of the magnetiser (magnet wheel) and the winding of the voltage generator pass each other twice as fast as in a generator with a stator, converting the kinetic energy of the wind into electrical energy. Therefore, the power plant presented here achieves better efficiency and the kilowatt of electricity it produces is cheaper than elsewhere. The wind power plant with a two-rotor EMF generator is an emission-free source of electricity and contributes to the reduction of pollution in the Earth's atmosphere.