The generator and motor are such devices whose function is just the opposite of each other. The number of turnings of the coils and the strength of the magnetic field affects the system in the same way. Sep 28, 2014 a motor and generator perform opposite functions, but their fundamental structure is the same. Their structure is a coil mounted on an axel within a magnetic field. In a motor an electric current is passed through the coil. Whereas, the principle of the generator is based on electromagnetic induction. Generator revolving field allows for a smaller, light weight unit that operates 25% more efficiently than a revolving armature generator. An electric generator is a machine that converts mechanical energy to electrical energy. In a generator the coil is attached to an external circuit that is turned, resulting in a changing flux that induces an emf.
Alternators and generators convert mechanical energy into electrical energy. Categorized under technology difference between pump and motor both pumps and motors are mechanical devices used for a varied range of engineering works. One is used to generate electricity and other uses electricity. Generator working principle and explain about ac and dc. The motor and the generator are almost similar from the construction point of view, as both have stator and rotor. These generators are packaged with an engine or turbine to be used as a motor generator set and used in applications like naval, oil and gas extraction, mining machinery, wind power plants etc. Consumption or production of electricity, its driven element, the existence of the current in the winding.
Difference between electric motor and generator compare. Both motors and generators can be explained in terms of a coil that rotates in a magnetic field. The emf in a generator increases its efficiency, but an emf in a motor contributes to energy waste and inefficiency in its performance. Difference between motor and generator is probably the most common question from the electricity topic of physics. In a generator, on the other hand, the armature or windings of wire spin inside a fixed magnetic field to generate electricity. Dc motor and dc generator are similar from the mechanical perspective, however from a technical stand point, both differ from each other significantly.
The motor runs on the electrical input current while the generator creates the electrical output current, with power flowing between the two machines as a mechanical torque. These are the main differences between motor and generator. What is the difference between a dc motor and a generator. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Difference between electric motors and generators motors. In an alternator, electricity is produced when a magnetic field spins inside the stator windings of wire. An electric motor is used to produce rotational motion from an electrical supply. Difference between stepper motor and dc motor the differences between stepper motor and direct current dc motor are explained considering factors like nature of loop of operation of the motor, controlling, the presence of brushes, its motion and displacement. It converts mechanical energy into electrical energy. Difference between electric motor and generator compare the. Jul 05, 2016 motor vs engine difference between engine and motor duration.
There is also a difference between a type of generator that is called a dynamo and an alternator. These generators are generally maintenance free, because of absence of brushes. Difference between generator and motor mechanical booster. Aug 03, 2019 the simple definition of them is pretty simple, a generator is a device which converts mechanical energy into electrical energy while a motor is a device which converts electrical energy into mechanical energy. What are the similarities between generators and motors. The response time of the motor and the effect of overloading. Alternator is a generator that produces an alternating current,based on laws of electromagnetic induction,works on principle of mechanical energy converted in to electrical energy,when a conductor moved in magnetic field it cuts the magnetic line. It is not a force, but is the potential difference between the terminals of a device that changes one form of energy into electrical energy. A battery, for example, converts chemical energy into electrical energy, and so is a source of emf. The main difference between alternator and generator is that a generator is any device that converts mechanical energy into electrical energy in the form of alternating current or direct current, whereas an alternator is a type of generator that produces alternating current. In previous articles we have seen different characteristics of generators, in todays article we will try to explain the differences between a singlephase and threephase generator, as well as the advantages and disadvantages of each of these options. Describe the cause of sparking between brushes and commutator. Before knowing their difference lets get familiarized with an electrical motor and electrical generator terms. Singlephase and threephase generators, differences.
Electric motors and generators are the opposite of each other. This rapidly changing magnetic field produces electromotive forces, called emfs or voltages. In a generator, shaft attached to the rotor is driven by a mechanical force and electrical current is produced in the armature windings, while the shaft of a motor is driven by the magnetic forces developed between the. This page on ac generator vs dc generator describes basic difference between ac generator and dc generator types.
May 05, 2012 as like the generator, the motor also has a rotor and a stator where a shaft attached to the rotor delivers the mechanical energy. We would be keeping this fact in mind while continuing with the article. A generator does the opposite of this, converting mechanical energy into electricity. The synchronous electrical generator also called alternator belongs to the family of electric rotating machines. The motor is an electrical device which can convert electrical energy into mechanical energy, using the principles of electricity and magnetism.
Difference between dc motor and dc generator electrical. Generator converts mechanical energy to electrical energy, while motor converts mechanical energy to electrical energy. In a motor, a currentcarrying coil in a magnetic field experiences a force on both sides of the coil. Describe the relationships between the individual output and resultant vectorial sum voltages in multiphase generators. See the tabular difference between the generator and motor on the next page. Difference between motor and generator the electric motor and generator are differentiated on various factors like the main principle of working or function of the motor and generator. They have currentcarrying loops that rotate in magnetic fields. A generator converts mechanical energy into electrical energy, while a motor does the opposite it converts electrical energy into mechanical. The definitions of electrical motor and generator are discussed below. Both the devices play a key role in various engineering fields such as mechanical engineering, electrical engineering, civil engineering, automobile engineering, construction works. There are various types in ac motors and ac generators as well as in dc motors and dc generators. Some of the types in dc generators are shunt wound generator, series wound. In a dc generator, the armature is always the rotor.
In alternators, the armature may be either the rotor or stator. Both generators and electric motors are common devices in everyday life, but how do they work and what is the difference between them. Carl mathie began working as a translator, editor and writer in 2004 at. Other members of the family are the directcurrent dc motor or generator, the induction motor or generator, and a number of derivatives of all these three. The main difference between the two is the sign conventions. Electric motor and electric generator are almost similar from the construction point of view. In this article, the main differences between ac and dc generator in tabular form are given in a simple and easy to understand way. In this article, we will learn about the difference between generator and motor. In motor, the current is supplied to the armature winding. Sep 21, 2016 the shaft of the generator is attached to the rotor and is driven by mechanical force.
The basic principles of operation for an electric motor are the same as that of a generator, except that a motor converts electrical energy into mechanical energy motion. Based on the applications, requirements, and type of power supply choice is made between motors and generators. Jun 17, 2018 also to be noted before we go on to understand the difference between a generator and a motor is the fact that motors and generators are available in both acdc variants. Difference between stepper motor and dc motor circuit globe. This is useful for many large appliances like dishwashers, refrigerators, and so on, which run on ac. What is the difference between an alternator and a motor. Difference between motor and generator with detailed comparison. Jul 05, 2017 an electric motor converts electricity into mechanical energy, providing a power source for machinery.
A brushless dc motor also requires a slightly different user. Each is connected to an infinite bus with voltage v t voltage and frequency of an infinite bus are fixed regardless of prime mover power and excitation of the. The motor and generator difference given here is in tabular form for better understanding and clarity. What are the differences between electric motor and electric.
Skewed stator produces a smooth output waveform for compatibility with electronic equipment. Difference between generator and motor engineering insider. Synchronous and asynchronous electromechanicalsystems dr. Synchronous and asynchronous electricmotors the electric motor is an electromechanical continuous energy conversion equipment that converts electrical energy into electrical energy mechanical energy. Motors and generators are the exact same device, but motors convert electrical energy into mechanical energy if the shaft on a motor is spun, a voltage is generated at the terminals. What is the difference between a dc motor and a generator in.
The chief advantage of brushed dc motors is that they are cheaper and simpler to construct and maintain than brushless motors as the mechanism is less complicated. Rationale understanding how electric motors and generators work and identifying how they are used helps students realize the central role that motors and generators play in producing and using electricity for various purposes. Pdf download whats the difference between ac, dc, and ec motors. Difference between motor and generator circuit globe. Displaced phase excitation maximizes motor starting capability. In this, you will learn about the generator and motor and their differences in brief. A motor when given power supply, converts it into mechanical energy by rotation and when a motor is given mechanical energy by rotating shaft, it will produce electrical energy this is practically true for permanent, external field excited motors, ie the ones that have permanent magnets if you have motor with stator. Whats the difference between ac, dc, and ec motors.
State the difference between a generator and a motor. The main difference between the two is that the motor is an electric device which converts electrical energy into mechanical energy. Difference between dc motor and dc generator versus wiki. Difference between motor and generator with detailed. Difference between ac and dc generator in tabular form byjus. Explain the effect of motor reaction in a dc generator. Motor and generator action comparison electrical study. What are the similarities between generators and motors answers. This post will explain some of the major differences between these. All electrical generators whether ac or dc, depend upon principle of magnetic induction regardless of their size. In this article, the main differences between electric motor and generator are given here.
The main difference between them is in regard to what spins and what is fixed. Difference between pump and motor difference between. Below are the diagrams for a generator on the left and a motor on the right. Difference between ac and dc generator is one of the most discussed topics among physics enthusiasts. The electric current is produced in the armature winding.