Back to results
US 10,541,634 B2Granted
Generator arrangements and methods of controlling generator arrangements
AssigneeHamilton Sundstrand Corporation
InventorsDhaval Patel, Jonathan C. Dell, Andreas C. Koenig, Glenn C. Lemmers, Jr.
Life of this patent
Estimating the term…
Abstract
A generator arrangement includes a stator with armature winding, a rotor with one or more permanent magnets supported for rotation relative to the stator, a variable speed drive, and a control module. The variable speed drive is connected to the rotor for rotating the rotor within a predetermined speed range. The control module is disposed in communication with the armature windings and is operatively connected to the variable speed drive to maintain constant output voltage as load changes by varying rotational speed of the rotor.
Claims19
A generator arrangement, comprising:
- a stator with armature windings;
- a rotor having a permanent magnet supported for rotation relative to the stator;
- a variable speed drive connected to the rotor for rotating the rotor at an output rotational speed output by the variable speed drive;
- a voltage and/or current sensor sensing voltage and/or current generated in the armature windings;
- a rotational speed sensor sensing an input rotational speed of rotation that is input to the variable speed drive;
- and
- a control module disposed in communication with the armature windings and operatively connected to the variable speed drive to maintain constant output voltage as load changes by varying rotational speed of the rotor, the control module further configured to control the variable speed drive via a hydraulic pump and motor set command signal for controlling a ratio of the input rotational speed to the output rotational speed as a function of output of the voltage and/or current sensor and the rotational speed sensor,
- wherein the generator arrangement is exciterless, and
- wherein the rotor does not carry a rotating rectifier.
6 more elements
A method of controlling a generator arrangement, comprising:
- rotating at an output rotational speed, by a variable speed drive, a rotor with one or more permanent magnets relative to a stator;
- generating electric current in armature windings fixed relative to the stator;
- sensing voltage of the electric current generated n the armature windings;
- sensing, at the variable speed drive, an input rotational speed that is input to the generator arrangement;
- and
- changing rotational speed of the rotor via a hydraulic pump and motor set command signal for controlling a ratio of the input rotational speed to the output rotational speed as a function of the sensed voltage and the input rotational speed to maintain constant output voltage generated by the armature windings even as an electrical load connected to the generator arrangement changes.
3 more elements
A generator arrangement, comprising:
- a stator with armature windings;
- a rotor having a permanent magnet supported for rotation relative to the stator;
- a variable speed drive connected to the rotor for rotating the rotor at an output rotational speed output by the variable speed drive, wherein the variable speed drive includes a hydraulic pump and motor set coupled to the rotor and arranged to vary rotational speed of the rotor according to a variable rotational speed input and a predetermined voltage output target;
- a voltage and/or current sensor sensing voltage and/or current generated in the armature windings;
- a rotational speed sensor sensing an input rotational speed of rotation that is input to the variable speed drive;
- a control module disposed in communication with the armature windings and operatively connected to the variable speed drive to maintain constant output voltage as load changes by varying rotational speed of the rotor the control module further configured to control the variable speed drive via a hydraulic pump and motor set command signal for a ratio of the input rotational speed to the output rotational speed as a function of output of the voltage and/or current sensor and the rotational speed sensor, wherein the generator arrangement is exciterless, and wherein the rotor does not carry a rotating rectifier;
- and
- a power converter connected to the windings and arranged to convert power received therefrom into constant frequency alternating current power or direct current power.
5 more elements
Dependencies are inferred from the claim text.