Patent ID: 7215100

Claim:
An apparatus for regulating a transient response of an output signal of an electrical generator, the apparatus comprising; an output winding means for providing a first AC signal and a second AC signal, the output winding means comprising an output winding having a first tap electrical connection and a second tap electrical connection, The first tap electrical connection providing the first AC signal, the second tap electrical connection providing the second AC signal; a switching means for combining the first AC signal and the second AC signal, thereby providing a switched signal, the switching means comprising a first AC switch, a second AC switch and a switch controller, the first AC switch having a first switch electrical connection, a second switch electrical connection and a first control electrical connection, the first switch electrical connection receiving the first AC signal, the first AC switch being operable to switch the first AC signal from the first switch electrical connection to the second switch electrical connection, the second switch electrical connection being connected to a node, the second AC switch having a third switch electrical connection, a fourth switch electrical connection and a second control electrical connection, the third switch electrical connection receiving the second AC signal, the second AC switch being operable to switch the second AC signal from the third switch electrical connection to the fourth switch electrical connection, the fourth switch electrical connection being connected to the node, the second switch electrical connection end the fourth switch electrical connection providing the switched signal, the switch controller being responsive to the output signal and providing a first switch control signal and a second switch control signal, the first AC switch being responsive to the first switch control signal received at the first control electrical connection, the second AC switch being responsive to the second switch control signal received at the second control electrical connection, the switch controller being operable to alternately close and open the first and second AC switches respectively thereby providing the switched signal, the switch controller being further operable to control a duty cycle of the switched signal to regulate the transient response of the output signal; and a filter unit having an input and an output, the input of the filter unit being responsive to the switched signal and the output of the filter unit providing the output signal, the switching means being responsive to the output signal to control the combining of the first and second AC signals to regulate the transient response of the output signal.