Active rectifier with phase locked varying switch frequencies
AssigneeHamilton Sundstrand Corporation
InventorHuazhen H. Chai
Life of this patent
Estimating the term…
Abstract
A power distribution system includes a variable frequency alternating current (AC) generator, an active rectifier electrically connected to the variable frequency AC generator such that AC power output from the variable frequency AC generator is rectified by the active rectifier, and a switching controller configured to detect a fundamental frequency of the AC power output and lock an active switch rate of the active rectifier to an integer multiple of the fundamental frequency.
Claims20
A power distribution system comprising:
- a variable frequency alternating current (AC) generator;
- an active rectifier electrically connected to the variable frequency AC generator such that AC power output from the variable frequency AC generator is rectified by the active rectifier;
- and
- a switching controller configured to detect a fundamental frequency of the AC power output and lock an active switch rate of the active rectifier to an integer multiple of the fundamental frequency.
A method for reducing attenuation requirements in an active rectifier comprising:
- identifying a fundamental frequency of an alternating current (AC) power received by the active rectifier and setting a switching rate to of the active rectifier to an odd number integer multiple of the fundamental frequency using a controller.
An aircraft power distribution system comprising:
- a gas turbine engine including a variable frequency generator;
- an active rectifier electrically connected to the variable frequency generator and configured to rectify power received from the variable frequency generator;
- and
- a switching controller coupled to the active rectifier and configured to set a switching rate of the active rectifier to a whole number integer multiple of a fundamental frequency of the power.
Dependencies are inferred from the claim text.