Results 221 to 230 of about 22,232 (277)

Strange attractors in brushless DC motors

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1994
Deals with the open-loop dynamic characteristics of smooth-air-gap brushless DC motors. The steady-state characteristics of these systems, subject to constant input voltages and constant external torques, are formulated, whereby it is shown that the presence of viscous damping friction can cause the system to possess multiple physical equilibria ...
openaire   +3 more sources

Brushless DC-Motor

2020
We derive the mathematical model of this class of motors. Then we design the proposed control schemes in original coordinates, i.e. a dq transformation is not required. We formally solve the velocity and position regulation problems. A pendulum is included as the load in the position control problem. In this chapter we include sketches of the stability
Victor Manuel Hernández-Guzmán   +2 more
openaire   +1 more source

Brushless DC motor selection

Proceedings:Electrical Electronics Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 2002
This paper investigates the process of brushless DC motor selection through the specification of load torque and the desired load motion as a function of time. The peak and RMS torque requirements of the application are discussed along with the procedure to find the correct motor size and performance. Gearing and power transmissions are also considered
B.K. Fussell, C.K. Taft
openaire   +1 more source

Brushless DC Motors

2003
Brushless DC (BLDC) motors, also called permanent magnet synchronous motors, are used in direct-drive applications mainly due to their large torque producing capability. Compared to conventional DC motors, they have no brushes or mechanical commutators, which eliminates the problems due to mechanical wear of the moving parts [68, 74].
Farshad Khorrami   +2 more
openaire   +1 more source

AC-based brushless dc motor

Russian Electrical Engineering, 2009
The possibility of creating and constructing a brushless dc motor with a stator asynchronous motor is examined.
V. V. Kochergin, B. V. Zakrevskaya
openaire   +1 more source

Improved Sensorless Brushless DC Motor Drive

IEEE 36th Conference on Power Electronics Specialists, 2005., 2006
This paper develops an improved sensorless brushless DC (BLDC) motor drive. It is based on the sensorless control, which describes a technique for directly extracting phase back EMF information without the need to sense or reconstruct the motor neutral.
null Genfu Zhou   +2 more
openaire   +1 more source

Performance improvement of brushless DC motor

2013 International Conference on Energy Efficient Technologies for Sustainability, 2013
Brushless dc (BLDC) drives have received significant attention, owing to their high efficiency, electromagnetic interference, and high mechanical reliability due to the absence of brushes. This paper discusses random pulse width modulation control for a BLDC motor drive; Boost and Buck boost converter control of a BLDC motor drive and a BLDC drive ...
B. Priya, V. Krishnakumar
openaire   +1 more source

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