Overvoltage prevention in an aircraft electrical power generation system
AssigneeHamilton Sundstrand Corporation
InventorsCarl A. Wagner, John F. Defenbaugh, Vijay K. Maddali, Richard L. Young
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Abstract
An example method of detecting a generator overvoltage condition includes predicting a primary control current to provide a predicted control current, monitoring the primary control current, and detecting a generator overvoltage condition based on a comparison of the predicted control current to the primary control current. The method interrupts the primary control current based on the comparing.
Claims17
A method of detecting a generator overvoltage condition comprising:
- predicting a primary control current to provide a predicted control current;
- monitoring the primary control current;
- detecting a generator overvoltage condition based on a comparison of the predicted control current to the primary control current;
- and
- interrupting the primary control current based on the comparing.
A method of detecting a generator overvoltage condition in a generator coupled to a prime mover comprising:
- using an overvoltage prevention function calculation to provide a predicted control current, the predicted control current representing a prediction of the current supplied to the generator to generate a desired power;
- using a voltage control function to provide a primary control current;
- detecting a generator overvoltage condition by identifying a discrepancy between the predicted control current and the primary control current;
- and
- interrupting the primary control current based on the identifying.
A generator overvoltage control arrangement comprising:
- a permanent magnet generator, an exciter, and a main generator mounted for rotation on a shaft, the main generator configured to produce a voltage output;
- a generator control unit including a circuit configured to provide a primary control current from the permanent magnet generator to the exciter;
- and
- an overvoltage prevention controller unit programmed to determine an overvoltage of the output voltage using a comparison of a predicted control current to the primary control current.
Dependencies are inferred from the claim text.