Patent ID: 8407016

Claim:
An energy meter for measuring the delivery of electrical energy from an energy supplier to a consumer through an electric circuit, the energy meter comprising: a meter module comprising: a plurality of sensors for sensing electrical parameters of lines of a multi-phase electrical power distribution system; a plurality of analog-to-digital (A/D) converters for receiving the sensed electrical parameters output from the plurality of sensors, the analog-to-digital (A/D) converters being configured to convert the sensed electrical parameters to digital signals for processing by at least one digital signal processor; the at least one digital signal processor configured for receiving the digital signals from the analog-to-digital (A/D) converters to perform calculations required to determine power usage of a load and for controlling the overall operations of the energy meter; a communication device for interacting with a user and for communicating events, alarms and instructions to the user; a display for providing visual indications to the user; a synchronization module comprising control logic operative to output a first control signal to adjust a frequency of an auxiliary generator, said control logic being further operative to determine when a phase angle difference between a voltage phase of the auxiliary generator and a corresponding voltage phase of the multi-phase electrical power distribution system are within a defined tolerance; and control means for outputting a second control signal to synchronize the auxiliary generator with the multi-phase electrical power distribution system upon determining that said phase angle difference is within said defined tolerance.