AC Motors, Controllers, and Variable Frequency Drives. What is an AC Motor AC Motor Basics. The standard definition for an AC Motor is an electric motor that is driven by alternating current. The AC Motor is used in the conversion of electrical energy into mechanical energy. This mechanical energy is made from utilizing the force that is exerted by the rotating magnetic fields produced by the alternating current that flows through its coils. The AC Motor is made up of two major components the stationary stator that is on the outside and has coils supplied with AC current, and the inside rotor that is attached to the output shaft. How Does an AC Motor Work The fundamental operation of an AC Motor relies on the principles of magnetism. The simple AC Motor contains a coil of wire and two fixed magnets surrounding a shaft. When an electric AC charge is applied to the coil of wire, it becomes an electromagnet, generating a magnetic field. Simply described, when the magnets interact, the shaft and the coil of wires begin to rotate, operating the motor. AC Motor Feedback. AC Motor products have two options for feedback controls. These options are either an AC Motor resolver or an AC Motor encoder. Both the AC Motor resolver and the AC Motor encoder can sense direction, speed, and the position of the output shaft. AIR%20CONDITION%20UNIT/Ductable-Split-Unit.jpg' alt='O General Split Ac Installation Guide' title='O General Split Ac Installation Guide' />While both the AC Motor resolver and AC Motor encoder offer the same solution in multiple applications, they are greatly different. AC Motor resolvers use a second set of stator coils called the transformer to provoke rotor voltages across an air gap. Since the resolver lacks electronic components, it is very rugged and operates over a large temperature range. The AC Motor resolver is also naturally shock resistant, due to how it is designed. The resolver is often used in harsh environments. 737 Pilot In Command. The AC Motor optical encoder uses a shutter that rotates to disrupt a beam of light that crosses the air gap between a light source and the photo detector. The rotating of the shutter over time causes wear on the encoder. This wear reduces the durability and dependably of the optical encoder. The type of application will establish whether a resolver or an encoder is desired. AC Motor encoders are easier to implement and more precise, so they should be the primary preference for any application. A resolver should only be chosen if the environment in which it will be used requires it. Basic types of an AC Motor. The AC Motor comes in three different types known as Induction, Synchronous, and Industrial. OGeneral-Split-Air-Conditioner-AC-Easy-Maintenance-533x261.jpg' alt='O General Split Ac Installation Guide' title='O General Split Ac Installation Guide' />
Read LG Split Air Conditioner AC Review, Price, Features, Models, Performance, Life, Quality, features, durability and much more details on ReviewCenter. The Supplier Portal provides access to the systems and processes we use to order, make and deliver products and services to our customers. L098 Save these instructions for future reference Page 1 INSTALLATION AND MAINTENANCE INSTRUCTIONS SCU Series Split System Air Conditioner Manufactured By. Python Quick Guide Learn Python in simple and easy steps starting from basic to advanced concepts with examples including Python Syntax Object Oriented Language. View and Download Gree Split Air Conditioner owners manual online. Split Air Conditioner Air Conditioner pdf manual download. Lake County Mechanical is a IL Heating, Cooling, Air Conditioning, Geothermal Heat Pump, Ductless MiniSplit and Furnace repair, service, replacement and maintenance. These AC Motor types are determined by the rotor design used in the construction. Anaheim Automation carries all three types in its product line. Induction AC Motor. Induction AC Motors are referred to as asynchronous motors or rotating transformers. This type of AC Motor uses electromagnetic induction to power the rotating device which is usually the shaft. The rotor in Induction AC Motor products typically turns slower than the frequency that is supplied to it. Induced current is what causes the magnetic field that envelops the rotor of these motors. This Induction AC Motor is designed in one or three phases. Synchronous AC Motor. The Synchronous Motor is typically an AC Motor that has its rotor spinning at the same rate as the alternating current that is being supplied to it. Heroes Of Might And Magic 2 Gold Full more. The rotor can also turn at a sub multiple of the current it is supplied. O General Split Ac Installation Guide' title='O General Split Ac Installation Guide' />Slip rings or a permanent magnet supplied with current is what generates the magnetic field around the rotor. Industrial AC Motor. AC Industrial Motors are designed for applications requiring a three phase, high power induction motor. The power ratings of an industrial motor exceed those of a standard single phase AC induction motor. Anaheim Automation offers Industrial AC Motors from 2. W to 2. 20. 0W, in 3 Phase operation at 2. VAC or 3. 80. VAC. Where are AC Motors used
What Industries are AC Motors used in AC Motors are primarily used in domestic applications due to their relatively low manufacturing costs, and durability, but are also widely used in industrial applications. What Applications are AC Motors used forAC Motors can be found in numerous home appliances and applications, including Clocks Power tools Disk drives Washing Machines and other Home Appliances Audio turntables Fans. They can also be found in industrial applications Pumps Blowers Conveyors Compressors. How are AC Motors ControlledAC Controllers Basics. An AC Controller Sometimes reffered to as a Driver is known as the device that controls the speed of the AC Motor. An AC Controller can also be referred to as a variable frequency drive, adjustable speed drive, frequency converter, etc. The AC Motor receives power, which is ultimately converted by the AC Controller into an adjustable frequency. This adjustable output allows the motor speed to be precisely controlled. Components of an AC Controller. Typically, an AC Controller consists of three basic parts the rectifier, inverter, and the DC link to connect the two. The rectifier converts AC input into DC direct current, while the inverter switches the DC voltage to an adjustable frequency AC output voltage. The inverter can also be used to control output current flow if needed. Adobe Flash Cs5 Portable. Both the rectifier and inverter are directed by a set of controls to generate a specific amount of AC voltage and frequency to match the AC motor system at a given point in time. Applications. An AC Controller can be used in many different industrial and commercial applications. Most often used to control fans in air conditioning and heating systems, the AC Controller allows for more control of the airflow. The AC Controller also aids in adjusting the speed of pumps and blowers. More recent applications include conveyors, cranes and hoists, machine tools, extruders, film lines, and textile fiber spinning machines. Advantages and Disadvantages. Advantages Increases the life of the motor due to high power factor Economical speed control Optimize motor starting characteristics Lower maintenance than DC control. Disadvantages Generates a large amount of heat and harmonics. History. Nikola Tesla invented the first AC Induction Motor in 1. DC motor. However, AC speed control was a challenging task. When precise speed control was required, the DC motor became a replacement for the AC motor, because of its efficient and economical means of controlling speed accurately. It wasnt until the 1. AC speed control became a competitor. Over time, AC Drive technology eventually transformed into an inexpensive and reliable competitor to the traditional DC control. Now, an AC Controller is capable of speed control with full torque attained from 0 RPM through the maximum rated speed. Variable Frequency Drives. Basics. The Variable Frequency Drive is a particular kind of adjustable speed drive that is used to control the speed of an AC motor. In order to control the motors rotational speed, a Variable Frequency Drive controls the frequency of the electrical power supplied to it. Adding a Variable Frequency Drive to an application allows the motor speed to be adjusted in accordance with the motors load, ultimately saving energy. Commonly used in a myriad of applications, a Variable Frequency Drive can be found operating ventilation systems, pumps, conveyors and machine tool drives. How a Variable Frequency Drive Works. When complete voltage is applied to an AC motor, it accelerates the load and drops torque initially, keeping current especially high until the motor reaches full speed.