BLDC motor vs conventional motor


Brushless DC motors are very commonly used now a days. They are everywhere in all equipment used in routine. They are used in computers as cooling fans, hard drive spinning motors and in DVD drives etc. With advent of electric vehicles brushless dc motor use in increased. Brushless dc motor is the best suitable drive motor for many small vehicles drive. Brushless dc motor provides many advantages over regular DC motors and other conventional motors. As these motors have no brushes inside, there are many problems eliminated due to brush removal. Due to brushless design many mechanical problems associated with brushes are also eliminated like friction, maintenance and efficiency problems. As brushed motors have brush and commutator which is worn out component, it could fail catastrophically. In brushless motors the function of the commutator and carbon brush is performed electronically, it is much more reliable and fail proof. As technology has been advance in last few years in rare earth magnets technology and there are very powerful and efficient motors are constructed due to this development which are more powerful and more efficient in same size brushed dc motors.

BLDC Motor running arrangement


Brushless DC motor are run by an electronic controller and the controller supervise all power, voltage and current provides to coils. Also the controller uses PWM to control the speed, power and energy to the motors. These motors could run on both directions from the controller with no difficulties and complexities.

With the advancement in electronics and especially in power electronics, very robust and strong controllers manufacturing is possible. The controllers uses IGBT and Mosfets as output devices which are providing power to the motors. Controllers uses microcontroller with appropriate software to perform all functions required to drive a bldc motor as well as to make necessary pwm signal to power up the bldc motor. There are some special dedicated chips which are used specially to control and run a bldc motor. The very common chip example is FCM8201. This chip has complete detail in its datasheet which shows how to set up the circuit and can make a reliable brushless motor controller.

There is another example of bldc motor controller which is from ON semiconductor MC33033. This chip has complete rotor position circuit integrated inside. So the controller don't need much to run the motor. This chip has capabilty to run 3 phase or 4 phase bldc motors.


Comments

Post a Comment

Popular posts from this blog

Microwave oven front panel keypad repair and modification

Image
Here is the video on youtube. You must watch it if you are a Urdu to Hindi viewer: Here is the video on youtube. You must watch it if you are an English viewer: The microwave oven is a useful machine to preheat or cook food. The microwave oven is working reliably but now a days Chinese microwave oven have big front panel keypad failure. The keypad is breaking down in one year of less time. The repair is not easy and sometimes the replacement parts are not readily available then it becomes another problem. The solution to such a problem is a modification with existing easily available parts and some wire connections to the main board. The modification is a very robust an reliable work so that will never break down or if breaks down, the repair would be way easy and low cost. Here is a little detail with images is included for such a modification work. Most of the images are from the video associated with this blog post. Anyhow it will further explain the important...
Read more

Sandwich maker or sandwich grill repair and maintenance

Image
Here is a youtube video covering all these details in video: Sandwich maker or sandwich grill is a common house hold electrical appliance used in every house and every facility. They are daily use electrical appliances. They are of different make and model. One thing is common in all of them is the heating element and a sort of temperature controlling switch operated on some preset or selectable temperature range. The heating element are heated by line power and are switched off when the desired temperature is reached. By that way the grill or heating plate is heated and the toast put there is also grilled or heated by that temperature. Sandwich makers or sandwich grill are reliable equipment but some times they develop troubles. The result is no heating grill or heating plates. Normally there are electrical connection problem or temperature controlling switch problem. The heating element failure is also possible but that is a rare fault. So if a grill or sandwich ...
Read more

TP4056 li-ion 3.7v battery 18650 Charging Module Detail, Pinout and datasheet

Image
 In this text I will discuss about the famous TP4056 charging module which is a 3.70V  Li-ion battery 18650 in detail. The pinout, characteristics, setup and calibration for battery value will be covered in this text. TP4056 charger module is a very tiny size module to charge li ion batteries that it can fit anywhere inside any electronic equipment or instrument. TP4056 module consists of a single chip IC TP5640  and a few other supporting components which makes high quality and precision charging module which gives complete solution to automatically charge li-ion batteries of any small size. Using TP4056 module to charge the li-ion battery, it provides full battery life and effective charging to prolong battery life with great efficiency. Using TP4056 battery charging module you can make the line powered equipment less power consuming and the old equipment using dry cell can be converted to rechargeable battery solution. TP4056 Charger or charging module TP4056 Charging ...
Read more