What is BLDC motor PDF?

Brushless Direct Current (BLDC) motors are one of the motor types rapidly gaining popularity. BLDC motors are used in industries such as Appliances, Automotive, Aerospace, Consumer, Medical, Industrial Automation Equipment and Instrumentation.

What is BLDC motor working principle?

BLDC motor works on the principle similar to that of a Brushed DC motor. The Lorentz force law which states that whenever a current carrying conductor placed in a magnetic field it experiences a force. As a consequence of reaction force, the magnet will experience an equal and opposite force.

How do you classify BLDC motor explain?

Basically, BLDC are of two types, one is outer rotor motor and other is inner rotor motor. The basic difference between the two is only in designing, their working principles are same.

How many phases are in a BLDC motor?

BLDC motors come in single-phase, 2-phase and 3-phase configurations. Corresponding to its type, the stator has the same number of windings. Out of these, 3-phase motors are the most popular and widely used.

What are the types of BLDC motor?

BLDC motors are available in three configurations: single-phase, two-phase, and three-phase. Out of these, the three-phase BLDC is the most common.

What is torque of BLDC motor?

The equation for the torque constant of a BLDC motor: Kτ=602πKv(RPM)=1Kv(SI), where Kτ is the torque constant in N⋅mA, and Kv is the speed constant, in either rpm or rad/s.

Why there is no brushes in BLDC motor?

Efficiency is a primary selling feature for BLDC motors. Because the rotor is the sole bearer of the magnets, it requires no power, i.e., no connections, no commutator, and no brushes.

What are the two types of BLDC motors?

Broadly, there are two types of BLDC motors based on the physical design—inner rotor design and outer rotor design.

What is the application of BLDC motor?

The most common uses of brushless DC motors in industrial engineering are motion control, linear actuators, servomotors, actuators for industrial robots, extruder drive motors and feed drives for CNC machine tools.

Is BLDC motor 3-phase?

A brushless DC (BLDC) motor is a rotating electric machine, where the stator is a classic 3-phase stator like that of an induction motor, and the rotor has surface-mounted permanent magnets; see Figure 2-1.

Are BLDC motors 3-phase?

What are the applications of BLDC motor?

Applications that use the BLDC Motor include, yet are not constrained to:

• Consumer electronics.
• Transport.
• Heating and ventilation.
• Industrial engineering.
• Model engineering.

What is the operating voltage of BLDC motor?

The voltage range is 250 V / 600 V withstand voltage, the conduction angle is 120 °, 150 °, 180 ° (sinusoidal wave drive), current is available from 1.5 A to 2.5 A wide range of lineups are available. Ideal for household appliances such as air conditioners and air purifiers, fan motor for residential equipment.

How is Bldc torque calculated?

1. T = 4 * N * B * L * R * i.
2. This is the Equations to Know for simple estimation of BLDC torque.
3. number of turns per phase.
4. strength of the permanent magnetic field length of the stator / core (or the magnet too, if they are equal) radius of the stator.
5. current in the motor windings.

Are BLDC motors Star or Delta?

With the characteristic of a BLDC in mind (Unidirectional current between any two phases, third phase remains idol), it can constructively be concluded that BLDC motors are ALWAYS star connected, because only in star connection, if you apply voltage source between any two leads, the current flows between two phases …

How do you calculate BLDC motor power?

For the brush-type motor, Pi = (20/0.55) = 36.4 W, and for the brushless motor, Pi = (20/0.70) = 28.6 W. Last, calculate the run current for each motor where I = Pi/V. For the brush-type motor, I = 36.4/24 = 1.52 A, and for the brushless motor, I = 28.6/24 = 1.19 A.

What are the main advantages of BLDC motor?

The advantages of a brushless motor over brushed motors are high power-to-weight ratio, high speed, nearly instantaneous control of speed (rpm) and torque, high efficiency, and low maintenance.