Almost all of the Planet’s electric power is produced by rotating electrical machines. Electric machines are electromechanical energy converters. Generators convert mechanical energy into electrical energy and motors convert electrical energy into mechanical energy. Approximately 70% of electrical energy is converted in driving electric motors.
All metals comprise atoms with positive protons and negative electrons. Consequently metals have “electric charge”. Metal electrons constantly move between atoms as electric “liquid” (i.e. the electron sea). A metal wire surrounding a magnetic field which is rotated causes a voltage pressure. Charges in the wire attempt to rotate with the field. Accelerating the magnetic rotation increases voltage. If the circuit is open, the pressure will cause no charge flow. A voltage difference will appear within the wires. If the circuit is closed the electrons will flow, i.e. an electric current. The effect is a basic law of physics called electromagnetic induction first described by Michael Faraday in Almost all of the Planet’s electric power is produced by rotating electrical machines. Electric machines are electromechanical energy converters.1831.