Turbine Blade Speed Control via Electromagnetic Synchronous Machine
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Solution Overview
Problem
Existing turbines are optimized for specific fluid speeds, resulting in reduced mechanical efficiency when faced with varying or low fluid speeds, leading to zero power transmission at low velocities and decreased efficiency at high velocities.
Innovation Solution
Incorporating an electromagnetic synchronous machine with a rotor and stator, including a regulating magnet and coil, to adjust the angular speed of the blade based on measured fluid velocity, optimizing mechanical efficiency through a control system that calculates and adjusts the optimal rotation speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the blade is optimized for a specific fluid speed, then the mechanical efficiency is maximized at that speed, but the efficiency decreases when the fluid speed varies or is low
Solution Approach 1:
The patent applies the dynamics principle by making the blade's rotational speed adjustable through an electromagnetic synchronous machine. The control system dynamically modifies the angular velocity of the blade based on real-time fluid speed measurements, allowing the turbine to adapt its operating characteristics to varying flow conditions and maintain optimal mechanical efficiency across different speeds.
Solution Approach 2:
The patent implements parameter changes by modifying the operational parameter of blade rotational speed based on fluid velocity conditions. The control system calculates the optimal angular velocity corresponding to maximum mechanical efficiency for the measured fluid speed and adjusts the blade's rotation accordingly, transforming a static optimization into a dynamic parameter adjustment process.
2Power
If the blade rotates at high speed, then more power is generated, but the mechanical efficiency decreases at high fluid velocities
Solution Approach 1:
The patent applies feedback by implementing a control system that continuously measures fluid velocity, calculates the optimal angular velocity for maximum efficiency, and adjusts the blade's rotational speed accordingly. This closed-loop feedback mechanism ensures the turbine operates at peak efficiency across varying flow conditions, preventing both under-performance at low speeds and efficiency loss at high speeds.
3Speed
If the blade is designed for low-speed operation, then it can operate at low fluid velocities, but the power output is limited
Solution Approach 1:
The electromagnetic synchronous machine enables dynamic speed adjustment, allowing the blade to operate at optimized speeds regardless of fluid velocity conditions. This dynamic capability resolves the contradiction by enabling the blade to maintain efficient operation at low speeds while preventing the power limitation that would occur with a fixed low-speed design.
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 solution ensures maximum mechanical efficiency across varying fluid speeds, including low velocities, by dynamically adjusting the blade's angular speed, thereby preventing zero power transmission and maintaining efficiency even at high speeds.
Implementation Method 1
an electromagnetic synchronous machine and means for adjusting the angular speed of rotation of the blade by the electromagnetic synchronous machine
Implementation Method 2
said cavity having a profile shaped to accelerate the speed of the fluid at the level of the blade by Venturi effect
Data Source
Figure 1A~2
Figure 3A~4
Figure 5~6
AI summary
The invention relates to a turbine and to the implementation method thereof, said turbine comprising a blade mounted such that it can rotate about a central axis and an electromagnetic synchronous machine arranged with the blade in such a way as to modify the angular rotation speed of the blade in order to optimise the mechanical efficiency of the blade as a function of the speed of the incident fluid acting on the blade.