I am going to salvage a 12 volt high speed brushless DC motor from an old CD-ROM drive.
This motor is 20 years old and runs at a very high RPM of 16,500 at 12 volt DC input. This BLDC motor has a large number of poles and a very small core.
Moreover, the motor speed is so high that it can fly like a toy helicopter. I also lengthened the tree to make it more useful.
Brushless DC motors are synchronous motors supplied by DC electricity through an inverter or a switching power supply, which generates electricity in the form of alternating current to drive each phase of the motor through a controller in closed loop. The controller supplies current pulses to the motor windings which control the speed and torque of the motor. This control system replaces the commutator used in many conventional electric motors.
The advantages of brushless motors over brushed motors are high power-to-weight ratio, high speed, near instantaneous speed and torque control, high efficiency and low maintenance. Brushless motors are used in computer peripherals (disk drives, printers), portable power tools, and vehicles ranging from model airplanes to automobiles. In modern washing machines, brushless DC motors have led to the replacement of rubber belts and gearboxes with a direct-drive design,
The brushed DC motor was invented in the 19th century and is still common. Brushless DC motors became possible with the development of solid-state electronics in the 1960s.
The electric motor creates torque by keeping the magnetic fields of the rotor (the rotating part of the machine) and the stator (the stationary part of the machine) misaligned. One or both groups of magnets are electromagnets made of coil wire wound around an iron core. Direct current creates a magnetic field and gives the power to run the motor. A misalignment produces a torque that attempts to realign the fields. As the rotor moves and the fields align, it is necessary to move the rotor or stator field to maintain the misalignment and maintain torque and motion. The device that moves the fields depending on the position of the rotor is called a commutator.
I am going to salvage a 12 volt high speed brushless DC motor from an old CD-ROM drive.
This motor is 20 years old and runs at a very high RPM of 16,500 at 12 volt DC input. This BLDC motor has a large number of poles and a very small core.
Moreover, the motor speed is so high that it can fly like a toy helicopter. I also lengthened the tree to make it more useful.
Brushless DC motors are synchronous motors supplied by DC electricity through an inverter or a switching power supply, which generates electricity in the form of alternating current to drive each phase of the motor through a controller in closed loop. The controller supplies current pulses to the motor windings which control the speed and torque of the motor. This control system replaces the commutator used in many conventional electric motors.
The advantages of brushless motors over brushed motors are high power-to-weight ratio, high speed, near instantaneous speed and torque control, high efficiency and low maintenance. Brushless motors are used in computer peripherals (disk drives, printers), portable power tools, and vehicles ranging from model airplanes to automobiles. In modern washing machines, brushless DC motors have led to the replacement of rubber belts and gearboxes with a direct-drive design,
The brushed DC motor was invented in the 19th century and is still common. Brushless DC motors became possible with the development of solid-state electronics in the 1960s.
The electric motor creates torque by keeping the magnetic fields of the rotor (the rotating part of the machine) and the stator (the stationary part of the machine) misaligned. One or both groups of magnets are electromagnets made of coil wire wound around an iron core. Direct current creates a magnetic field and gives the power to run the motor. A misalignment produces a torque that attempts to realign the fields. As the rotor moves and the fields align, it is necessary to move the rotor or stator field to maintain the misalignment and maintain torque and motion. The device that moves the fields depending on the position of the rotor is called a commutator.
No comments:
Post a Comment