Electric motors play a vital role in powering machinery across industries. From semi-trucks to electric toothbrushes, AC and DC electric motors are widely used. They find applications in electronics, construction, home and office supplies, appliances, automotive manufacturing, transportation, and industrial manufacturing.
The range of electric motors is vast, with the largest ones used for pipeline compression, ship propulsion, and pumped-storage, while the smallest ones fit inside electric watches. They are used in electric vehicles, appliances, power tools, fans, and hybrid cars.
The interaction between magnetic and electric fields is fundamental to the operation of electric motors. These motors are divided into two categories based on the type of current they use: AC motors powered by alternating current and DC motors powered by direct current.
Top Manufacturers
BDI
Motion Industries, Inc.
Ryan Herco Flow Solutions (HQ)
Rockwell Automation
Providence Enterprise USA, Inc.
Win Source Electronic Technology Ltd.
DXP Cortech
Tatung Electric Co. of America
Suhner
Siemens Corporation
When it comes to successful businesses, revenue is a crucial factor in determining their growth and profitability. Here, we have listed the top 10 companies by their estimated annual revenue, along with their location and year of founding.
BDI - Cleveland, OH - 1935 - $250 Mil. and over BDI, founded in 1935, is a global distributor of industrial products, specializing in bearings, power transmission, fluid power, and material handling equipment. With over 200 branches worldwide, BDI has an estimated annual revenue of $250 million or more.
DXP Cortech - Anaheim, CA - 1987 - $250 Mil. and over DXP Cortech, established in 1987, is a leading supplier of industrial products and services, including pumps, bearings, power transmission, and safety equipment. Based in Anaheim, California, the company has an estimated annual revenue of $250 million or more.
Motion Industries, Inc. - Birmingham, AL - 1946 - $250 Mil. and over Motion Industries, Inc., founded in 1946, is a leading distributor of industrial parts and services, with over 550 locations worldwide. The company specializes in bearings, mechanical power transmission, electrical and industrial automation, hydraulic and industrial hose, hydraulic and pneumatic components, and safety products. Motion Industries, Inc. has an estimated annual revenue of $250 million or more.
Providence Enterprise USA, Inc. - Newport Beach, CA - 1992 - $250 Mil. and over Providence Enterprise USA, Inc. is a global supplier of electronics and components, with a focus on sustainable and innovative solutions. Founded in 1992, the company has its headquarters in Newport Beach, California, and an estimated annual revenue of $250 million or more.
Rockwell Automation - Milwaukee, WI - 1903 - $250 Mil. and over Rockwell Automation, founded in 1903, is a global provider of industrial automation and information technology solutions. The company specializes in control systems, power and energy management, motion control, and software. With an estimated annual revenue of $250 million or more, Rockwell Automation has a strong presence in the industry.
Ryan Herco Flow Solutions (HQ) - Burbank, CA - 1948 - $250 Mil. and over Ryan Herco Flow Solutions, founded in 1948, is a leading distributor of fluid handling products and services.
Motors
Components: Electric motors are typically composed of various components, including the rotor, stator, windings, air gap, and commutator.
Rotor: The rotor serves as the rotating part of the motor that converts electrical power into mechanical power by turning the shaft. It usually contains current-carrying conductors that interact with the magnetic field produced by the stator. However, in some cases, the rotor contains the magnets while the stator holds the conductors.
Stator: In contrast to the rotor, the stator remains stationary and forms the fixed portion of the motor's electromagnetic circuit. It generally comprises a core and either permanent magnets or windings. The core consists of several thin metal sheets, known as laminations, which minimize energy losses.
The interplay between electric and magnetic fields is crucial for the functioning of electric motors, which can be classified into two types depending on the type of current they employ. AC motors utilize alternating current, whereas DC motors utilize direct current.
Coils of wire that are wrapped around a core are commonly known as windings. When an electrical current is passed through them, they generate magnetic fields that form the basis of the motor's operation.
The air gap, which refers to the distance between the rotor and stator, is a critical element of motor design. It regulates the magnetizing current required for optimal performance, but a larger gap can lead to mechanical problems, energy losses, and noise. As a result, it is recommended to minimize the air gap and maintain it at an appropriate level to ensure smooth and efficient motor operation.
The commutator is an essential component found in most DC motors and universal motors, used to alternate the current's direction between the external circuit and the rotor. It consists of a cylinder made up of numerous metal contacts, or slip rings, segments, and an armature upon which the segments rotate. The segments are in contact with two or more electrical brushes that allow current to flow through them, reaching the rotor.
There are two main magnetic field pole configurations for electric motors: salient pole and non-salient pole.
When it comes to electric motors, there are two primary magnetic field pole configurations to consider: salient pole and non-salient pole.
In a salient pole machine, the magnetic field is produced by a winding located beneath the pole face.
On the other hand, a non-salient pole machine, which may also be referred to as a distributed field machine or a round-rotor machine, generates a magnetic field through windings that are wrapped around pole face slots.
No comments:
Post a Comment