IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0409991
(2009-03-24)
|
등록번호 |
US-8203317
(2012-06-19)
|
발명자
/ 주소 |
- Auer, Frank
- Panhofer, Harald
- Lefaix, Pierre
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
4 |
초록
▼
A method for controlling an output voltage of generator arrangement includes generating a controlled field current for a field winding dependent on the output voltage and dependent on at least one control parameter that depends on a rotational speed of the generator. The method also includes decreas
A method for controlling an output voltage of generator arrangement includes generating a controlled field current for a field winding dependent on the output voltage and dependent on at least one control parameter that depends on a rotational speed of the generator. The method also includes decreasing a rate of change of the controlled field current with respect to an output voltage change if the rotational speed decrease.
대표청구항
▼
1. A method for controlling an output voltage of a generator arrangement that comprises a generator having a field winding, the method comprising: generating a controlled field current for the field winding dependent on the output voltage and dependent on at least one control parameter that is depen
1. A method for controlling an output voltage of a generator arrangement that comprises a generator having a field winding, the method comprising: generating a controlled field current for the field winding dependent on the output voltage and dependent on at least one control parameter that is dependent on a rotational speed of the generator; wherein generating comprises decreasing a rate of change of the controlled field current with respect to an output voltage change if the rotational speed decreases for at least one rotational speed of the generator. 2. The method of claim 1, wherein the field current is generated dependent on a control signal that is dependent on the output voltage and the rotational speed. 3. The method of claim 2, wherein the control signal is generated such that it is dependent on a difference between the output voltage and a voltage reference value. 4. The method of claim 3, wherein the control signal is dependent on the at least one control parameter. 5. The method of claim 4, wherein the at least one control parameter is selected such that, for a given rotational speed range, a change in the control signal for a given change in the output voltage decreases, if the rotational speed decreases. 6. The method of claim 4, wherein the at least one control parameter decreases for a given rotational speed range with decreasing rotational speed. 7. The method of claim 4, wherein the at least one control parameter assumes a first value for rotational speeds that are lower than a rotational speed threshold value, and a second value for rotational speeds that are higher than the rotational speed threshold value. 8. The method of claim 3, wherein the control signal is generated in such a manner that it comprises: a proportional component that is proportional to a first control parameter and proportional to a difference between the output voltage and the reference value; andan integral component that is proportional to a second control parameter and proportional to an integral of the difference between the output voltage and the voltage reference value. 9. The method of claim 8, wherein at least one of the first and second control parameters is dependent on the rotational speed. 10. The method of claim 2, wherein the field current is generated by applying a pulse-width-modulated voltage to the field winding, the pulse-width-modulated voltage having a duty cycle that is dependent on the control signal. 11. The method of claim 1, further comprising an accumulator coupled to the generator arrangement, the accumulator receiving the output voltage. 12. The method of claim 2, wherein absolute values of time variations of the control signal are limited to a maximum for rotational speed values that are below a further rotational speed threshold value. 13. A circuit arrangement for controlling an output voltage of a generator arrangement, the generator arrangement having a generator with a field winding, the circuit arrangement comprising: a first input for receiving an output voltage signal that is dependent on the output voltage;a second input for receiving a rotational speed signal that is dependent on a rotational speed of the generator;circuitry that is adapted to generate a controlled field current for the field winding, the field current being dependent on the output voltage and being dependent on at least one control parameter that is dependent on the rotational speed of the generator;a controller arrangement that receives the output voltage signal and the at least one control parameter and that is adapted to generate a control signal dependent on the output voltage signal and the at least one control parameter;a control parameter circuit that receives the rotational speed signal and that generates the at least one control parameter with a value that is dependent on the rotational speed signal; anda current source that receives the control signal and that is adapted to generate the controlled field current dependent on the control signal. 14. The circuit arrangement of claim 13, wherein the controller arrangement is adapted to generate the control signal in such a way that it is dependent on a difference between the output voltage signal and a voltage reference value. 15. The circuit arrangement of claim 13, wherein the control parameter circuit is adapted to generate the at least one control parameter in such a way that a change of the control signal for a given change of the output voltage decreases, if the rotational speed decreases. 16. The circuit arrangement of claim 13, wherein the control parameter circuit is adapted, to generate the at least one control parameter in such a way that it decreases with decreasing rotational speed for a given rotational speed range. 17. The circuit arrangement of claim 13, wherein the control parameter circuit is adapted to generate the at least one control parameter in such a way that it assumes a first value for rotational speeds smaller than a rotational speed reference value, and a second value for rotational speeds higher than a rotational speed reference value. 18. The circuit arrangement of claim 13, wherein the controller arrangement is adapted to generate the control signal in such a way that the control signal comprises: a proportional component that is proportional to a first control parameter and proportional to a difference between the output voltage and a reference value; andan integral component that is proportional to a second control parameter and proportional to an integral of the difference between the output voltage and a reference value. 19. The circuit arrangement of claim 18, wherein at least one of the first and second control parameters is dependent on the rotational speed. 20. The circuit arrangement of claim 13, wherein the current source comprises: a pulse-width-modulator that receives the control signal and that is adapted to generate a pulse width modulated drive signal having a duty cycle dependent on the control signal; anda switch that is connectable in series to the field winding and that receives a drive signal. 21. A voltage supply arrangement, comprising: a generator arrangement having a generator that comprises a field winding, and output terminals for providing an output voltage;a rotational speed detection unit that is adapted to detect a rotational speed of the generator and to generate a rotational speed signal being dependent on the rotational speed; anda circuit arrangement for generating a field current for the field winding, the circuit arrangement receiving an output voltage signal that is dependent on the output voltage and the rotational speed signal and that is adapted to generate a controlled field current for the field winding, the field current being dependent on the output voltage and being dependent on at least one control parameter that is dependent on the rotational speed of the generator, wherein, for at least one rotational speed of the generator, the circuit arrangement decreases a rate of change of the controlled field current with respect to an output voltage change if the rotational speed decreases. 22. The voltage supply arrangement of claim 21, further comprising an accumulator connected to the generator arrangement. 23. A method for controlling an output voltage of a generator arrangement that comprises a generator having a field winding, the method comprising: generating a controlled field current for the field winding dependent on the output voltage and dependent on at least one control parameter that is dependent on a rotational speed of the generator, wherein the field current is generated dependent on a control signal that is dependent on the output voltage and the rotational speed, andabsolute values of time variations of the control signal are limited to a maximum for rotational speed values that are below a further rotational speed threshold value.
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