This paper represents of an idea of generating voltage from a stator-less dc generator using the earth magnetic field. As per the composition, a dc-generator consists of two parts, one is stator and another is rotor. The working principle for both the part is different from one to another. This stator creates an electromagnetic field and the rotor moves inside of that field at a rated speed by a prime mover. The flux which is linked with the rotor changes with its movement. As per Faraday’s law, if the flux changes in a coil it will induce an electro-motive force. In stator-less generator the required magnetic field is given by earth magnetic field, this magnetic field is present everywhere in the earth. Rotor have to place along the direction of maximum intensity of this field in a particular location. There is no requirement to create magnetic field and no requirement of stator winding or any magnet, only rotating part of the machine is required to generate the voltage by using earth magnetic field and this value changes as per the change of height and inclination angle and based on the proposed idea the previous conventional electro-motive force equation of generator can also be modified.

Keywords: Geo magnetic field, Modified earth magnetic field (EMF) equation, Stator-less generator