Search results
- Commutation allows the recipient of an obligation, such as an annuity or insurance policy, to change how they would prefer to receive their payment. Beneficiaries may choose to swap a lump-sum payment for a series of ongoing cash flows, or vice-versa.
www.investopedia.com › terms › cCommutation: What it is, How it Works, In Practice - Investopedia
People also ask
How do commutators work?
What is the purpose of commutation?
What is a motor commutator?
What is a commutator in a generator?
Oct 26, 2023 · In simple terms, a commutator ensures that current in the rotor or armature of a motor flows in the right direction. This article will delve into the details of how motor commutators work, their types, and some notable applications. Function of Motor Commutators.
To keep the torque on a DC motor from reversing every time the coil moves through the plane perpendicular to the magnetic field, a split-ring device called a commutator is used to reverse the current at that point. The electrical contacts to the rotating ring are called "brushes" since copper brush contacts were used in early motors.
- Operation
- Purpose
- Example
- Construction
The operating principle of a DC motor is based on the interaction between the magnetic field of a rotating armature and the magnetic field of a fixed stator. As the north pole of the armature is attracted to the south pole of the stator (and vice-versa), a force is produced on the armature, causing it to turn. Commutation is the process of switchin...
The basic purpose of commutation is to ensure that the torque acting on the armature is always in the same direction. The voltage generated in the armature is alternating in nature, and the commutator converts it to direct current. Simply put, the commutator turns the coils on and off to control which direction the electromagnetic fields are pointi...
For an excellent visual showing how the current is switched due to the position of the coils and brushes, see this article from the University of Utah.
The commutator itself is a split ring, typically made of copper, with each segment of the ring attached to each end of the armature coil. If the armature has multiple coils, the commutator will similarly have multiple segmentsone for each end of each coil. Spring-loaded brushes sit on each side of the commutator and make contact with the commutator...
A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine.
How do commutators work? A commutator is a rotatory electrical switch that reverses the direction of current between the rotor and the external circuit periodically. The reversal of the current each half-turn gives rise to a steady rotating torque.
- When was the commutator invented?Commutators were invented in 1832 by William Ritchie and Hippolyte Pixii.
- Where is the commutator used?Commutators are used in DC motors and universal motors to ensure that the current in the rotor windings always flows in the same direction.
- What are commutators made of?Commutators are made up of a set of copper segments that are fixed around the rotor.
- Is the commutator and slip ring the same?Although both are used to maintain the electric circuit continuity between a rotating and a static system, they are distinct from each other. Slip...
Apr 27, 2021 · Commutation refers to the right that a beneficiary has to exchange one type of income for another. Commutation is offered to annuitants and to the beneficiaries of life insurance...
The commutator is a split ring of larger size with large number of splits (commutator segments). It is called a mechanical rectifier in generator and an inverter in motor. The connections to the commutator depends upon the type of armature windings.
