Generator Output Control Device Voltage Droop Temperature Management
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Solution Overview
Problem
Existing methods for cooling electric generator components either impose limitations on component arrangement or require fans, and power generation control devices that estimate temperature and limit power generation based on it can narrow the usable range of the electric generator, affecting output quality and user-friendliness.
Innovation Solution
An output control device for electric generators that includes a temperature detecting means and an automatic voltage regulator, which decreases output voltage in proportion to rising temperature within a predetermined range, allowing for gradual voltage reduction and maintaining output quality while preventing overheating, and adjusts the control target value based on temperature changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If power generation is limited based on estimated temperature to prevent overheating, then component temperature is controlled, but the usable range of the electric generator is narrowed
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the output voltage based on detected temperature values. Instead of using fixed power generation limits, the system continuously modifies the output voltage parameter according to the actual temperature conditions, allowing the generator to operate across a wider range of temperatures while still preventing overheating. This is achieved through the output control means that decreases output voltage in proportion to temperature rise within the voltage droop range.
2Temperature
If output voltage is decreased significantly to control temperature, then component temperature is restrained, but output quality deteriorates
Solution Approach 1:
The patent applies partial action by implementing a progressive voltage reduction strategy rather than immediate full limitation. The output voltage is decreased in proportion to temperature rise within the voltage droop range (between limitation starting temperature and power generation stopping temperature), providing partial cooling effect while maintaining acceptable output quality. Only when temperature approaches the power generation stopping temperature is full power generation limited, thus preserving output quality under moderate temperature conditions.
3Temperature
If cooling measures are implemented through component arrangement modification, then temperature rise is restrained, but device complexity increases
Solution Approach 1:
The patent applies mechanics substitution by replacing physical cooling measures (such as forced air circulation fans or complex component arrangement modifications) with an electrical control system. The output control means electronically adjusts the output voltage based on temperature detection, substituting mechanical cooling approaches with an electrical field-based control method that is simpler in structure and easier to implement.
4Temperature
If forced air circulation is used to cool components, then temperature rise is restrained, but device complexity and energy consumption increase
Solution Approach 1:
The patent applies mechanics substitution by replacing the mechanical forced air circulation system with an electrical output control system. Instead of using fans and air flow mechanisms to cool components, the system controls temperature by electronically adjusting the output voltage of the generator based on temperature detection. This eliminates the need for mechanical cooling components, reducing device complexity and energy consumption while achieving effective temperature control.
Data Source
AI summary
A rising temperature of components of an electric generator is restrained without deteriorating the quality of electricity output and the user-friendliness of the electric generator. AVR (7) and a temperature detecting means (75) is provided in a generator housing. While the detected temperature is greater than the limitation starting temperature, the output voltage is decreased by decreasing the control target value (for the AVR (7)) in accordance with the temperature. A range between the power generation stopping temperature as an upper-limit temperature of a generator component and the limitation starting temperature set to be a lower than the power generation stopping temperature is defined as a voltage droop range. In the voltage droop range, the control target value is decreased in accordance with a target voltage base value preset in a relationship with the temperature so that the decrease degree becomes greater in proportion to a rising temperature.