A method for regulating the output voltage of the alternator of a generator set, the generator set including a heat engine driving the alternator and the alternator including a rotor having a pole wheel. The method includes the following step: modifying the current in the pole wheel, at least during
A method for regulating the output voltage of the alternator of a generator set, the generator set including a heat engine driving the alternator and the alternator including a rotor having a pole wheel. The method includes the following step: modifying the current in the pole wheel, at least during an increase in the load at the outlet of the alternator, in such a way as to bring the output voltage of the alternator to a value lower than the value before the increase in the load, the modification of the current in the pole wheel depending on the deceleration of the heat engine.
대표청구항▼
1. A method for regulating the output voltage of the alternator of a generator set, the latter comprising an engine driving the said alternator, the alternator comprising a rotor having a pole wheel, the method comprising the following step: modifying, at least upon an increase in the load at the ou
1. A method for regulating the output voltage of the alternator of a generator set, the latter comprising an engine driving the said alternator, the alternator comprising a rotor having a pole wheel, the method comprising the following step: modifying, at least upon an increase in the load at the output of the alternator, the current in the pole wheel, so as to bring the output voltage of the alternator to a set point voltage of the alternator below that before increase in the load, the modification of the current in the pole wheel being dependent on the deceleration of the engine. 2. The method according to claim 1, wherein the modification of the value of the current in the pole wheel leads to an increase in the rotation speed of the engine on account of the decrease in the output voltage of the alternator and in which the value of the current in the pole wheel is modified again, so as to bring the value of the output voltage back to that before increase in the load. 3. The method according to claim 1, wherein the engine is a turbocharged engine. 4. The method according to claim 1, wherein the increase in the load corresponds to a slowing of the engine below a predefined speed. 5. The method according to claim 4, wherein the predefined speed being, for example, the nominal speed less 4%, especially a frequency of the voltage of 48 Hz for a nominal speed corresponding to a nominal frequency of 50 Hz. 6. The method according to claim 1, wherein the modification of the current of the pole wheel is performed by decreasing the exciter excitation current. 7. The method according to claim 1, wherein the modification of the current of the pole wheel is performed for example by virtue of a pulse width modulation of the voltage across the terminals of the pole wheel. 8. The method according to claim 1, wherein the discrepancy between the setpoint voltage and the nominal voltage is proportional to the deceleration. 9. A system for regulating the output voltage of the alternator of a generator set, the latter comprising an engine driving the said alternator, the alternator comprising a rotor having a pole wheel, the system being configured to modify, at least when the load increases at the output of the alternator, the value of the current in the pole wheel, so as to bring the output voltage of the alternator to a setpoint voltage below that before increase in the load, the modification of the value of the current in the pole wheel being dependent on the derivative of a quantity representative of the rotation speed of the engine. 10. The system according to claim 9, wherein the setpoint voltage being chosen in such a way that the discrepancy between the nominal voltage and the setpoint voltage is dependent at least on the deceleration of the engine. 11. The system according to claim 9, wherein the system is configured to apply the voltage reduction when the increase in the load applied corresponds to a decrease in the frequency of the voltage below a predefined value, for example the nominal frequency less 4%.
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이 특허에 인용된 특허 (9)
Maekawa Hirotoshi (Tokyo JPX), Control system for engine generator.
Hucker David J. (Rockford IL) Schmitz Norbert L. (Middleton WI) Glennon Timothy F. (Rockford IL), Main field current transient control circuit for dynamoelectric machines.
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