You said that torque for a brushless dc motor is given by Q = Kq(I – Io) where Q = torque, Kq= 30/(pi Kv), I = current, and Io = no-load current. You also said that the units for Kq is [N m].
What is torque of BLDC motor?
As discussed earlier, in a BLDC motor, the torque remains constant for a speed range up to the rated speed. The motor can be run up to the maximum speed, which can be up to 150% of the rated speed, but the torque starts dropping.
How is motor torque calculated?
To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.
What is maximum speed of BLDC motor?
Brushless DC Motor (BLDC Motor) & Gear Motor Lineup
|Output Power||Gear Options||Speed Range|
|400 W (1/2 HP) Brushless DC Motors & Gear Motors||Parallel Shaft (Stainless Steel Shaft)*||80 ~ 4000 r/min Min: 0.19 [600:1] Max: 800 [5:1]|
|Right-Angle Hollow Shaft (Stainless Steel)*|
|Hollow Shaft Flat Gear|
|Round Shaft (no Gear)|
What are the advantages of BLDC motor?
Brushless motors offer several advantages over brushed DC motors, including high torque to weight ratio, increased efficiency producing more torque per watt, increased reliability, reduced noise, longer lifetime by eliminating brush and commutator erosion, elimination of ionizing sparks from the commutator, and an …
What is the torque of a motor?
The driving force of an electric motor is torque – not horsepower. The torque is the twisting force that makes the motor running and the torque is active from 0% to 100% operating speed.
How much torque does a 1 hp motor have?
The 3600 RPM, 1HP motor produces 1.5 ft. lbs. of torque at 3600 RPM. So if your 1HP pump was operating at 1800 RPM, the 1800 RPM motor would be producing 3 ft.
Does 2 motors double torque?
(2) motors provide (2x) the torque, at the same speed. Additional motors will provide additional torque. There is no more complicated calculation. It’s that simple.
How do you increase the torque of a BLDC motor?
Abstract— In transportation, BLDC motors are required to have high torque. This BLDC electric motor is designed to drive an electric car. Increased torque can be done in many ways one of which is the selection of the stator material. Effect on the generated torque can be studied by replacing its stator materials.
How is speed of BLDC motor controlled?
Speed of a brushless dc motor can be controlled by controlling the input dc voltage / current. The higher the voltage more is the speed. Many different control algorithms have been used to provide control of BLDC motors. The motor voltage is controlled using a power transistor operating as a linear voltage regulator.
What makes a brushless motor faster?
The current flowing through the windings is directly proportional to the torque. Hence in a simple way, the speed of the brushless motor increases in with increase in voltage OR decrease in the winding current (assuming one of these parameters as a constant).
What is the working principle 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. As a consequence of reaction force, the magnet will experience an equal and opposite force.
How does a BLDC motor works?
A brushed DC motor has permanent magnets on the outside of its structure, with a spinning armature on the inside. … In brushless DC motors, the permanent magnets are on the rotor, and the electromagnets are on the stator. A computer then charges the electromagnets in the stator to rotate the rotor a full 360-degrees.
Is BLDC motor good?
Among these, brushless DC motors (BLDC) feature high efficiency and excellent controllability, and are widely used in many applications. The BLDC motor has power-saving advantages relative to other motor types.