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Generator separately excited by battery Self exciting generators Series on left, shunt on right. A shunt generator is a type of electric generator in which field winding and armature winding are connected in parallel, and in which the armature supplies both the load current and the field current for the excitation (generator is therefore self excited).
A self-excited shunt-wound DC generator is shown on the left, and a magneto DC generator with permanent field magnets is shown on the right. The shunt-wound generator output varies with the current draw, while the magneto output is steady regardless of load variations. A separately-excited DC generator with bipolar field magnets.
A field coil is an electromagnet used to generate a magnetic field in an electro-magnetic machine, typically a rotating electrical machine such as a motor or generator. It consists of a coil of wire through which the field current flows. In a rotating machine, the field coils are wound on an iron magnetic core which
Field circuit – A set of windings that produces a magnetic field. Commutation: A mechanical technique in which rectification can be achieved, or from which DC can be derived. A: shunt B: series C: compound f = field coil. The five types of brushed DC motor are: Shunt-wound; Series-wound; Compound (two configurations): Cumulative compound
In a shunt-wound motor, the field coils are connected in parallel, or shunted to the armature coils. In a separately excited (sepex) motor, the field coils are supplied from an independent source, such as a motor–generator, and the field current is unaffected by changes in the armature current. The sepex system was sometimes used in DC ...
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Universal motors' field coils are series wound with the rotor coils and commutator. Equivalent circuit. Not all series-wound motors operate well on AC current. [4] [note 1] If an ordinary series-wound DC motor were connected to an AC supply, it would run very poorly. The universal motor is modified in several ways to allow for proper AC supply ...
A shunt is a device that is designed to provide a low-resistance path for an electrical current in a circuit. It is typically used to divert current away from a system or component in order to prevent overcurrent .