Field Weakening Characteristics Computed with FEM-Coupled Algorithms for Brushless AC Motors

Brushless AC Drives

The accuracy of rotor position estimation in the (several kHz), and its amplitude cannot be changed as it is conventional signal injection based sensorless control of determined by the DC-link voltage and the PWM duty cycle, permanent magnet brushless AC drives depends on the load the amplitude of high frequency current will be too small for current. This paper proposes an improved method, whic...

AVR32723: Sensor Field Oriented Control for Brushless DC motors with AT32UC3B0256

Global Exponential Stabilization for Brushless DC Motors

In this paper, global exponential stabilization for chaotic brushless DC motor(BLDCM) is described. Based on Lyapunov theorem and stability theory, we design two controller to realize the global stabilization of BLDCM with exponential convergence rate. Numerical simulations suggest that the motor with the two controllers can converge efficiently.

Field Orientated Control of 3-Phase AC-Motors

The principle of vector control of electrical drives is based on the control of both the magnitude and the phase of each phase current and voltage. For as long as this type of control considers the three phase system as three independent systems the control will remain analog and thus present several drawbacks. Since high computational power silicon devices, such as the TMS320F240 from TI, came...

Application Characteristics of Permanent Magnet Synchronous and Brushless dc Motors for Servo Drives

The permanent magnet synchronous motor (PMSM) and the brushless dc motor (BDCM) have many similarities; they both have permanent magnets on the rotor and require alternating stator currents to produce constant torque. The difference in these two machines is that the PMSM and the BDCM has sinusoidal and trapezoidal back emfs, respectively. This means these two machines have different operating c...