Patent ID: 7545124
Filing Date: 2009-06-09
Classification: H02J,H02P

Abstract:
1. A method of connecting a prime mover driven alternator, arranged to generate a current between two terminals, to an alternating current circuit with an existing alternating current, the method comprising the steps of: (a) initialising the prime mover so that it reaches a suitable condition to drive the alternator at the frequency of the alternating current in the circuit to which it is to be connected; (b) measuring a parameter indicative of the amount of electricity that will be supplied or drawn by the alternator when connected to the alternating current circuit; (c) connecting the terminals of the alternator to a circuit with an existing alternating current to cause the alternator to start movement of the prime mover when the measured parameter reaches a predetermined threshold; (d) measuring the amount of electricity supplied or drawn by the alternator substantially immediately upon connection; and (e) updating the value of the predetermined threshold in accordance with the measured amount of electricity.