Electronic Speed Controllers (ESC) ! Esc In Hindi ! Electronic Speed Controller In Hindi

An electronic speed control follows a speed reference signal (derived from a throttle lever, joystick, or other manual input) and varies the switching rate of a network of field-effect transistors (FETs) .[1] By adjusting the duty cycle or switching frequency of the transistors, the speed of the motor is changed. The rapid switching of the transistors is what causes the motor itself to emit its characteristic high-pitched whine, especially noticeable at lower speeds.

Different types of speed controls are required for brushed DC motors and brushless DC motors. A brushed motor can have its speed controlled by varying the voltage on its armature. (Industrially, motors with electromagnet field windings instead of permanent magnets can also have their speed controlled by adjusting the strength of the motor field current.) A brushless motor requires a different operating principle. The speed of the motor is varied by adjusting the timing of pulses of current delivered to the several windings of the motor.
A generic ESC module rated at 30 amperes with an integrated BEC
Brushless ESC systems basically create three-phase AC power, like a VFD variable frequency drive, to run brushless motors. Brushless motors are popular with radio controlled airplane hobbyists because of their efficiency, power, longevity, and lightweight in comparison to traditional brushed motors. Brushless DC motor controllers are much more complicated than brushed motor controllers.[2]

The correct phase varies with the motor rotation, which is to be taken into account by the ESC: Usually, back EMF from the motor is used to detect this rotation, but variations exist that use magnetic (Hall effect) or optical detectors. Computer-programmable speed controls generally have user-specified options that allow setting low voltage cut-off limits, timing, acceleration, braking, and direction of rotation. Reversing the motor's direction may also be accomplished by switching any two of the three leads from the ESC to the motor.

ESCs are normally rated according to maximum current, for example, 25 amperes or 25 A. Generally the higher the rating, the larger and heavier the ESC tends to be which is a factor when calculating mass and balance in airplanes. Many modern ESCs support nickel-metal hydride, lithium-ion polymer, and lithium iron phosphate batteries with a range of input and cut-off voltages. The type of battery and number of cells connected is an important consideration when choosing a battery eliminator circuit (BEC), whether built into the controller or as a stand-alone unit. A higher number of cells connected will result in a reduced power rating and therefore a lower number of servos supported by an integrated BEC, if it uses a linear voltage regulator. A well designed BEC using a switching regulator should not have a similar limitation.

Tags
Electronic Speed Controllers (ESC), Electronic Speed Controllers,sec, electronic speed controller, brushless motor,brushless motor controller,esc brushed speed controller, brushed motor speed controller,brushed speed controller with reverse,how to make an esc,rc electronics for beginners,esc in Hindi, electronic speed controller in hindi,how to make rc plane in hindi,how to make a drone in hindi,rc karo,rckaro,rc parts in Hindi,esc test,30 amp esc brushless
Electronic Speed Controllers (ESC),Electronic Speed Controllers,sec, electronic speed controller,brushless motor,brushless motor controller,esc brushed speed controller,brushed motor speed controller, brushed speed controller with reverse,how to make a esc,rc electronics for beginners,esc in Hindi, electronic speed controller in hindi,how to make rc plane in hindi,how to make a drone in hindi,rc karo,rckaro,rc parts in hindi,esc test,30 amp esc brushless,how to make rc drone in Hindi,how to make esc in Hindi,ESC for a drone.

Видео Electronic Speed Controllers (ESC) ! Esc In Hindi ! Electronic Speed Controller In Hindi канала RC Helper