Motor control systems can be divided into three major types: manual, semiautomatic, and automatic. Thus the current reduces from primary to secondary. The principle of working of the project lies in the functioning of the relay and is explained here. Basically servo motor is made up of DC motor which is controlled by a variable resistor (potentiometer) and some gears. Synchronous Motor Working Principle Working of synchronous motors depends on the interaction of the magnetic field of the stator with the magnetic field of the rotor. First of all, we use gear assembly to reduce RPM and to increase torque of the motor. This is a very useful article to understand the basics of MCC. An electric motor uses the attraction and repulsion of magnetic fields to produce motion. The below figure shows the parts that consisting in RC servo motors in which small DC motor is employed for driving the loads at precise speed and position. In short, we may change the motors operation and control by doing some modification in the above simple electrical interlocking control circuit diagram. Working Principle and Operation of BLDC Motor BLDC motor works on the principle similar to that of a conventional DC motor, i.e., the Lorentz force law which states that whenever a current carrying conductor placed in a magnetic field it experiences a force. Working Principle of Hysteresis Motor. Types of Electric Motor. Very large controllers may be bolted in place but smaller controllers can be unplugged from the cabinet for testing or maintenance. Unlike a brushless DC motor which rotates continuously when a fixed DC voltage is applied to it, a step motor rotates in discrete step angles.The stepper motor can be controlled with or without feedback.  A motor control center can also include push buttons, indicator lights, variable-frequency drives, programmable logic controllers, and metering equipment. Figure 4 shows a cam-operated valve. The bimetallic strip gets heated up by the current directly or indirectly and when the current flow exceeds the set value, it bends. This is the basis of working of a dc motor. What is the maximum ambient operating environment recommended for a MCC? Working Principle of DC Servo Motor A DC servo motor is an assembly of four major components, namely a DC motor, a position sensing device, a gear assembly, and a control circuit. Vector control allows you to independently control the speed and torque of the electric motor. 2 ways to achieve the switching of loads using the remote. mostly industrial motors are single phase or three-phase … Home / Download Center / Electrical Engineering Books and Technical Guides / Siemens Basics of Energy and Automation Guides / Basics of DC Drives. Each motor controller contains a contactor or a solid-state motor controller, overload relays to protect the motor, fuses or a circuit breaker to provide short-circuit protection, and a disconnecting switch to isolate the motor circuit. The working of DC motor is based on the principle that when a current carrying conductor is placed in a magnetic field, it experiences a mechanical force. MCC's are typically found in large commercial or industrial buildings where there are many electric motors that need to be controlled from a central location, such as a mechanical room or electrical room. The apparatus designed for this function is the motor control center (MCC). This is an automatic closed loop control… Robert W. 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