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
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.
대표청구항▼
1. An output control device of an electric generator, the output control device comprising: an output controller that controls an output voltage of the electric generator; anda temperature detector that detects a temperature in a housing that contains the electric generator;wherein a voltage droop r
1. An output control device of an electric generator, the output control device comprising: an output controller that controls an output voltage of the electric generator; anda temperature detector that detects a temperature in a housing that contains the electric generator;wherein a voltage droop range is defined as a range between a power generation stopping temperature that is an upper-limit temperature of a component included in the electric generator and a limitation starting temperature that is set at a value lower than the power generation stopping temperature, andwherein the output controller is an automatic voltage regulator that converges the output voltage of the electric generator with a control target value, and the output voltage is decreased by decreasing the control target value in accordance with the temperature in the range, and the output voltage is increased by increasing the control target value in accordance with the temperature in the range,wherein, in the voltage droop range, the output controller decreases the control target value in accordance with a target voltage base value that has been preset in a relationship with the temperature so that a decrease in the output voltage becomes greater in proportion to an increase in the temperature detected by the temperature detector, andwherein, in the voltage droop range, the output controller confirms that the temperature detected by the temperature detector is decreasing and, only after confirming that the temperature detected by the temperature detector is decreasing, the output controller increases the control target value in accordance with the target voltage base value to increase the output voltage, wherein the output controller confirms that the temperature detected by the temperature detector is decreasing when the temperature detected by the temperature detector is detected to continuously decrease for a predetermined time period. 2. The output control device of the electric generator according to claim 1, wherein, if the temperature detected by the temperature detector is lower than a temperature detected last time, the control target value is set to be a value higher by a predetermined amount with respect to a target voltage base value preset in a relationship with the temperature. 3. The output control device of the electric generator according to claim 2, wherein, if the control target value has not been updated for a predetermined time, the control target value is set to be a lower value with respect to the target voltage base value preset in a relationship with the temperature. 4. The output control device of the electric generator according to claim 3, wherein the automatic voltage regulator is arranged into a digital type automatic voltage regulator that includes a substrate on which a CPU and a semiconductor switching device for controlling a field current of the electric generator are mounted, and wherein the temperature detector is a thermistor element that is mounted on the substrate. 5. The output control device of the electric generator according to claim 2, wherein the automatic voltage regulator is arranged into a digital type automatic voltage regulator that includes a substrate on which a CPU and a semiconductor switching device for controlling a field current of the electric generator are mounted, and wherein the temperature detector is a thermistor element that is mounted on the substrate. 6. The output control device of the electric generator according to claim 1, wherein the automatic voltage regulator is arranged into a digital type automatic voltage regulator that includes a substrate on which a CPU and a semiconductor switching device for controlling a field current of the electric generator are mounted, and wherein the temperature detector is a thermistor element that is mounted on the substrate. 7. The output control device of the electric generator according to claim 1, wherein the predetermined time period is 30 seconds. 8. The output control device of the electric generator according to claim 7, wherein, in the voltage droop range, after confirming that the temperature detected by the temperature detector is decreasing, the output controller increases the control target value in accordance with the target voltage base value so that the increase in the output voltage is inversely proportional to a decrease in the temperature detected by the temperature detector. 9. The output control device of the electric generator according to claim 1, wherein, in the voltage droop range, after confirming that the temperature detected by the temperature detector is decreasing, the output controller increases the control target value in accordance with the target voltage base value so that the increase in the output voltage is inversely proportional to a decrease in the temperature detected by the temperature detector. 10. The output control device of the electric generator according to claim 1, wherein the output controller controls the electric generator to stop generating power so that the output voltage becomes zero when the temperature is detected to increase and become higher than the power generation stopping temperature, andwherein the output controller controls the electric generator to begin generating power when the temperature is detected to decrease and become lower than the power generation stopping temperature.
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