It is worth mentioning the fact that DC motors are components whose main objective is to convert the mechanical energy into electrical energy, such as generator, or electrical energy in mechanics, motor. In today’s world, alternating voltage electronic devices are already able to control the speed of the asynchronous motor in an easy way and for its reduced cost and application features, they end up replacing the DC motors in most applications. It can be said that nowadays, the alternating current is the form of electric energy used in the distribution and the locomotion of the same.
The motor capable of operating from direct current consists of a commutator ring, stator, rotor and brushes. The rotor element is of great value, since it consists of the rotating part, composed on the axis of the machine, which is formed by a ferromagnetic element wrapped in the armature winding and switch ring. The commutator ring has the function of reversing the direction of the currents passing through the armature winding. The stator consists of the static part of the machine, mounted around the rotor. And the brushes consist of pieces of graphite that are responsible for driving energy into the rotor circuit.
The disk-shaped windings may involve a single bundle or several bundles of interlaced and isolated conductors in a series-parallel orientation of interconnected horizontal discs. Each disc contains several turns, one on top of the other, with alternating intersections between interior and exterior.
The life of a transformer is related to its insulation system, its insulation material and the process of producing the material. The characteristics of the insulation system depend on the conductor geometry, the dielectric composition, temperature gradients and the characteristics of all the combined materials that have been applied. LOR400SAP44
Most transformers with this type of winding belong to the voltage class of 25 kV, and are usually of the core type involved. Given the high voltages studied in the tests and their operation, we must pay special attention to prevent high mechanical stresses between the disks and the ends of all the turns when subjecting the equipment to transient voltage peaks. Several techniques have been developed to support an allowable voltage distribution throughout manufacturing under these conditions.