摘要:
An electrical interface (25) for a first induction machine (20) coupled to a first prime mover (15), comprising a first inverter (40) comprising a first DC port and a first AC port, the DC port electrically coupled to a DC bus (60), the DC bus (60) being adapted to be electrically coupled to a DC storage device (30), an LC filter (57) connected to the AC port, the LC filter (57) adapted to be electrically coupled to the first induction machine (20), a DC link (50) connected to the DC bus (60), and an electronic load control unit (55) connected to the DC bus (60), the electrical load control unit (60) adapted to be electrically coupled to a controllable load device (35), wherein the first inverter (40) is controllable to provide a first input electrical power to the first induction machine (20) for cranking of the first prime mover (15), controllable to receive an amount of a first electrical power generated by the first induction machine (20) that is not consumed by at least one of an electrical load (32) electrically coupled to the first induction machine (20) and the DC storage device (30), and controllable to supply a first reactive power required by the first induction machine (20) and the electrical load (32).
摘要:
Es wird ein Verfahren zum Betreiben einer Gleichstrommaschine, insbesondere eines Starters (10) für eine Brennkraftmaschine vorgeschlagen, wobei der Anker (46) der Maschine über Bürsten (42) und einen Kommutator (44) aus einer Gleichspannungsquelle (30, 31) gespeist wird. Hierbei wird die Patinierung des Kommutierungssystems durch Überwachung des maschinenspezifischen Einschaltstromes (I) überwacht und durch Änderungen der Betriebsparameter der Maschine korrigiert. Die Überwachung des Einschaltstromes (I) der Maschine erfolgt vorzugsweise anhand des beim Einschalten auftretenden Spannungseinbruchs ΔU im Hauptstromkreis der Maschine
摘要:
A starter system for start up of a combined heat and power unit comprising a generator which is connectable to the grid. The starter system comprises a variable frequency drive, VFD, operable to receive power from the grid. The VFD reduces the frequency of the power, and provides the reduced-frequency power to the generator to start the generator. The starter system further comprises a bypass relay configured to bypass the VFD. The bypass relay allows direct connection between the grid and the generator after the generator has started. The variable frequency drive is configured to operate temporarily during start up of the combined heat and power unit.
摘要:
The present invention relates to a system for controlling rotational speed on a rotating process machine (P), which for example is a turbine or a propeller, where the rotating process machine (P) is connected to at least one motor (M1) and arranged to rotate with a given rotational speed given by the motor (M1), the motor (M1) is connected to a control system (C) and the rotational speed of the motor (M1) is arranged to be controlled by a control system (C). The rotating process machine (P) comprises a load control (PC) arranged to be adaptable, the control system (C) is connected to the rotating process machine (P). With the invention, one achieves soft transitions between several selectable rotational speeds and lower energy consumption by step by step adjusting the size and the rotational speed of the motor (M1) to varying energy requirement.
摘要:
The present invention relates to a system for controlling rotational speed on a rotating process machine (P), which for example is a turbine or a propeller, where the rotating process machine (P) is connected to at least one motor (M1) and arranged to rotate with a given rotational speed given by the motor (M1), the motor (M1) is connected to a control system (C) and the rotational speed of the motor (M1) is arranged to be controlled by a control system (C). The rotating process machine (P) comprises a load control (PC) arranged to be adaptable, the control system (C) is connected to the rotating process machine (P). With the invention, one achieves soft transitions between several selectable rotational speeds and lower energy consumption by step by step adjusting the size and the rotational speed of the motor (M1) to varying energy requirement.
摘要:
An electrical interface (25) for a first induction machine (20) coupled to a first prime mover (15), comprising a first inverter (40) comprising a first DC port and a first AC port, the DC port electrically coupled to a DC bus (60), the DC bus (60) being adapted to be electrically coupled to a DC storage device (30), an LC filter (57) connected to the AC port, the LC filter (57) adapted to be electrically coupled to the first induction machine (20), a DC link (50) connected to the DC bus (60), and an electronic load control unit (55) connected to the DC bus (60), the electrical load control unit (60) adapted to be electrically coupled to a controllable load device (35), wherein the first inverter (40) is controllable to provide a first input electrical power to the first induction machine (20) for cranking of the first prime mover (15), controllable to receive an amount of a first electrical power generated by the first induction machine (20) that is not consumed by at least one of an electrical load (32) electrically coupled to the first induction machine (20) and the DC storage device (30), and controllable to supply a first reactive power required by the first induction machine (20) and the electrical load (32).
摘要:
The invention relates to a method for operating a d.c. generator, especially a starter (10) for an internal combustion engine, the armature (46) of the machine being fed by brushes (42) and a commutator (44) from a constant voltage source (30, 31). The patination of the commutation system is monitored by the machine-specific startup current (I) and corrected by changing the operating parameters of the machine. The monitoring of the startup current (I) of the machine is carried out preferably on the basis of the power fade ?U during the startup in the main current circuit of the machine.
摘要:
In einer Maschine wie beispielsweise einer Baumaschine, einer Produktionsmaschine oder einem Roboter wird eine Nutzlast vermittels eines Antriebs über ein Getriebe bewegt. Um die Bewegung einzuleiten, ist die Haftreibung zu überwinden. Bei der Erfindung geschieht dies dadurch, dass der Antrieb mit einer Antriebskraft (bei translatorischer Bewegung) oder einem Antriebsmoment (bei rotatorischer Bewegung) beaufschlagt wird, die/das eine konstante Komponente und eine periodisch variierende Komponente umfasst. Es kann ermittelt werden, ob sich die Nutzlast in Bewegung setzt. Direkt anschließend kann dann die Antriebskraft beziehungsweise das Antriebsmoment geändert werden.