Basic Info.
Casing Protection
Explosion-Proof Type
Product Description
An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field may be produced by permanent magnets, reluctance saliency, or DC or AC electrical windings.
Less commonly, linear AC motors operate on similar principles as rotating motors but have their stationary and moving parts arranged in a straight line configuration, producing linear motion instead of rotation.
Operating principles
AC motors operate with two rotating (or moving) magnetic fields on the rotor and stator respectively. Pulling or pushing the poles of the two magnetic fields along, the speed of the stator rotating magnetic field (Ws) and the speed of the rotor rotating magnetic field (Wr), which is relative to the speed of the mechanical shaft (Wm), must maintain synchronism for average torque production by satisfying the synchronous speed relation (i.e., ±Ws ±Wr = Wm).[1] Otherwise, asynchronously rotating magnetic fields would produce pulsating or non-average torque.
The two main types of AC motors are classified as induction or synchronous. The induction motor (or asynchronous motor) always relies on a small difference in speed between the stator rotating magnetic field and the rotor shaft speed called slip to induce rotor current in the rotor AC winding. As a result, the induction motor cannot produce torque about synchronous speed where induction (or slip) is irrelevant or ceases to exist.
An electric motor is an electric machine that converts electrical energy into mechanical energy. The reverse conversion of mechanical energy into electrical energy is done by an electric generator.
In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor. In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy.
Found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives, electric motors can be powered by direct current (DC) sources, such as from batteries, motor vehicles or rectifiers, or byalternating current (AC) sources, such as from the power grid, inverters or generators. Small motors may be found in electric watches. General-purpose motors with highly standardized dimensions and characteristics provide convenient mechanical power for industrial use. The largest of electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors may be classified by electric power source type, internal construction, application, type of motion output, and so on.
Electric motors are used to produce linear or rotary force (torque), and should be distinguished from devices such as magnetic solenoids and loudspeakers that convert electricity into motion but do not generate usable mechanical powers, which are respectively referred to as actuators and transducers.
Address:
No. 2 Dong Fu Road, Chiling Dawei New Village, Houjie Town, Dongguan, Guangdong, China
Business Type:
Manufacturer/Factory
Business Range:
Tools & Hardware
Company Introduction:
Our ventilators are with fantastic fan with excellent performance and elegant shape for circular pipe. With the perfect match between new designed shell and backward centrifugal impeller, our ventilators have the best pneumatic and hydrodynamic performance as well as compact size and practical application, our ventilators are easy to be installed, lightweight, quiet, and able to provide strong power for air feeding, exhausting, returning and purifying. With extremely high pressure, our ventilators can be used for a pipe over several decameters long, able to control multiple areas by one ventilator and can be applied to buildings, indoor air exchanging and pipe pressurizing. Air intake and outlet are designed in compliance with standard pipe diameters and can be connected to a pipe directly at both ends. Our ventilators are wildly used in public places like hotel, hall, conference room, supermarket, station, airport, etc.
