Wind Turbine Pitch Cabinet Temperature Control
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Solution Overview
Problem
Traditional temperature control systems for wind turbines, such as fan heaters, are inefficient and costly, especially when used with DC motors, and can lead to inefficiencies and damage due to increased internal resistance of capacitors at low temperatures, requiring additional components and modifications.
Innovation Solution
A wind turbine system utilizing a breaking resistor to convert excess kinetic energy into heat, which is then used to maintain the temperature of the energy storage device and control circuitry, eliminating the need for additional heating elements and optimizing the use of existing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional fan heaters are used to maintain temperature of energy storage device and control circuitry, then temperature control is achieved, but device complexity and installation cost increase due to additional components and AC power routing modifications
Solution Approach 1:
The breaking resistor is repurposed to serve dual functions: its primary function of dissipating excess kinetic energy and its secondary function of heating the energy storage device and control circuitry. This merging eliminates the need for separate heating components, reducing part count and installation complexity while maintaining effective temperature control
Solution Approach 2:
The breaking resistor is transformed from a single-function component (energy dissipation) to a multi-functional component that simultaneously provides both energy dissipation and heating functions. This universal application reduces the overall component count and eliminates the need for additional AC power routing infrastructure
2Device complexity
If breaking resistor is used for heating, then device complexity is reduced and space is saved, but temperature control precision may be affected
Solution Approach 1:
A temperature sensor continuously monitors the temperature of the energy storage device and control circuitry, providing feedback to the control unit. The control unit processes this temperature information and adjusts the breaking resistor's heating output accordingly, ensuring precise temperature control despite the simplified component structure
Solution Approach 2:
The system transitions from static temperature control to dynamic control by continuously adjusting the breaking resistor's operation based on real-time temperature feedback. The control unit can modulate the heating effect dynamically, maintaining optimal temperature ranges even as operating conditions change
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 solution reduces the part count, saves space and weight, lowers installation and maintenance complexity, and maintains the temperature of critical components within operational ranges, enhancing energy efficiency and preventing damage from low temperatures.
Implementation Method 1
The electric motor is in occasional electrical contact with the breaking resistor such that a first current flows through the breaking resistor and excess kinetic energy of the electric motor is converted into heat
Implementation Method 2
the power supply is configured to cause a second current to flow through the breaking resistor such that the breaking resistor produces heat
Implementation Method 3
the breaking resistor is arranged relative to the control circuitry and the energy storage device such that the breaking resistor provides heat to the energy storage device and the control circuitry
Data Source
AI summary
A wind turbine temperature control system for maintaining the temperature of an energy storage device, the temperature control system has a breaking resistor for providing heat to the energy storage device and a power supply for causing a current to flow in the breaking resistor.