Permanent magnet generator systems
AssigneeHamilton Sundstrand Corporation
InventorsAndrew R. Wilkinson, Dhaval S. Patel
Life of this patent
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Abstract
A permanent magnet generator (PMG) system can include a stator configured to output a voltage, and a rotor assembly configured to be magnetically coupled to the stator and to rotate relative to the stator to induce the voltage. The rotor assembly can be configured to passively attenuate the voltage output from the stator in response to acceleration of the rotor assembly at or above an impulse acceleration threshold.
Claims20
A permanent magnet generator (PMG) system, comprising:
- a stator configured to output a voltage;
- and
- a rotor assembly configured to be magnetically coupled to the stator and to rotate relative to the stator to induce the voltage, wherein the rotor assembly is configured to passively attenuate the voltage output from the stator in response to acceleration of the rotor assembly at or above an impulse acceleration threshold, wherein the rotor assembly includes:
- a rotor having one or more permanent magnets disposed therein, wherein the rotor is configured to move between a maximum coupling position and a misaligned position where the rotor is at least partially decoupled from the stator to cause the stator to output less voltage than in the maximum coupling position;
- and
- a biasing member configured to bias the rotor to the maximum coupling position, wherein the biasing member is configured to hold the rotor in the maximum coupling position until the rotor accelerates at or above the impulse acceleration threshold.
A rotor assembly for a permanent magnet generator (PMG), wherein the rotor assembly is configured to be magnetically coupled to a stator and to rotate relative to the stator to induce a voltage output from the stator, wherein the rotor assembly is configured to passively attenuate the voltage output from the stator in response to acceleration of the rotor assembly at or above an impulse acceleration threshold, wherein the rotor assembly includes:
- a rotor having one or more permanent magnets disposed therein, wherein the rotor is configured to move between a maximum coupling position and a misaligned position where the rotor is at least partially decoupled from the stator to cause the stator to output less voltage than in the maximum coupling position;
- and
- a biasing member configured to bias the rotor to the maximum coupling position, wherein the biasing member is configured to hold the rotor in the maximum coupling position until the rotor accelerates at or above the impulse acceleration threshold.
Dependencies are inferred from the claim text.