small permanent magnet motors
A New Hunting Control Method for Permanent Magnet Hysteresis Motors
... and permanent magnet brake ...and permanent magnet ...and permanent magnet motors. The negative affect of the magnet brake torque is compensated by the eddy current ...
10
Minimization of Eddy-Current Loss in a Permanent-Magnet Tubular Linear Motor
... with small size are extremely strong, metallic in appearance and are found in simple shapes such as rings, blocks, and ...The magnet materials are very sensitive to the ...
7
Improved cogging calculation methods for surface mounted permanent magnet synchronous motors
... of motors with outer surface tapered magnets and bread-loaf ...sufficiently small errors between the analytical and FEA plots of air gap flux density and cogging torque are obtained for the analytical ...
7
Optimization of Permanent Magnet Skew in Permanent Magnet Linear Synchronous Motors Using Finite Element and Statistical Method
... a small number of finite element simulations, because they can perform to a certain number of skew angles and from these data are obtained, and trend curves from these curves are obtained optimal ...
6
Energy efficient autonomous solar water pumping system for permanent magnet synchronous motors
... For small systems, based on DC motors, a DC/DC converter between the PV source and the converter is always inevitably required, since a perfect match is difficult to obtain through a direct ...
9
Analytical Synchronization Analysis of Line-Start Permanent Magnet Synchronous Motors
... Figure 2(a) shows the slip as a function of the load angle obtained by the numerical implementation of the Runge-Kutta-Fehlberg method. Figure 2(b) compares this implementation with the approximation of the ...
11
Genetic algorithm based design optimisation for permanent magnet synchronous motors
... it is first offset to make it positive and then it is scaled. In non-linear scaling a non-linear function of the objective function value is offset, if required, and then linearly scaled to achieve the fitness. For most ...
10
Sensorless control of brushless permanent magnet motors
... Furthermore, four electrical rotor position calculation methods have been researched and developed for DFC. Three methods are based on the relation of flux linkage signals and another one is achieved by modifying the ...
190
Sensor less Speed Control for Permanent Magnet Motors with Non Sinusoidal Back EMF
... BLDC motors. Brushless motors fulfill many functions originally performed by brushed dc motors, but cost and control complexity prevents brushless motors from replacing brushed motors ...
6
Analysis and Reduction of Cogging Torque of Line-Start Permanent Magnet Motors
... Torque ripple is an important parameter of PMSM. How to reduce torque ripple is the key to study the LSPMSM. Different methods are proposed to improve the starting and steady state performance of LSPMSM. Reference [10] ...
10
Torque improvement in brushed DC motors by using four pole permanent magnet
... In case of coreless PMM, it is very challenging to incorporate number of poles more than two since most commonly used winding patterns which are skewed and rhombic are designed for two poles PMM. These winding patterns ...
5
Effect of Rotor Eccentricity Faults on Noise Generation in Permanent Magnet Synchronous Motors
... the field created by magnet (stator winding) and the relative air-gap permeance. Under the initial modeling assumption, the permeance is constant because of the uniform air gap. However, any change in the air-gap ...
16
Nested-Loop Neural Network Vector Control of Permanent Magnet Synchronous Motors
... electric motors are critical for the adoption of electric drive vehicles (EDVs) in significant quantities, especially for HEV and PHEV applications where motors have to be packaged in a vehicle along with ...
10
Application of Vector Control to Permanent Magnet Synchronous Motors Using Chaos Control
... A nonlinear vector control method is designed for the chaotic permanent magnet synchronous motors. The controller is based on the setting the desired Lyapunov exponents approach and is used to ...
18
Fuzzy Logic Controller for BLDC Permanent Magnet Motor Drives
... Fig. 7 illustrates the membership function of fuzzy logic controller that used the “fuzzification” of two input values and “ defuzzification” output of the controller. There are seven clusters in the membership ...
6
Speed Control of Radial Flux BLDC Motor by Using Closed Loop Control for Electric Vehicle
... energy, motors with features such as space conservation, highefficiency and flexibility are being considered for commercial ...flux permanent magnet(RFPM) brushless direct current (BLDC) ...hasplaced ...
7
A New Analytical Description and FEA Validation of an Effective Method to Reduce the Cogging Torque in SM-AFPM Motors
... It can be said that many design parameters influence a cogging torque profile, such as slot opening width, dimensions of stator and rotor, air gap length and magnet curve to pole pitch ratio (the magnet ...
9
Optimal Design of Magnetically Levitated Permanent-Magnet Planar Motors Using THD2D Method
... 19. Yan, L., L. Zhang, T. Wang, Z. Jiao, C.-Y. Chen, and I.-M. Chen, “Magnetic field of tubular linear machines with dual halbach array,” Progress In Electromagnetics Research, Vol. 136, 283–299, 2013. 20. Jansen, J. W., ...
10
Permanent Magnet DC Motor Sliding Mode Control System
... Abstract In this paper a sliding mode controller (SMC) is designed for a permanent magnet direct current (PMDC) motor to enhance the motor performance in the presence of unwanted uncertainties. Both the ...
10
Adaptive Voltage-based Control of Direct-drive Robots Driven by Permanent Magnet Synchronous Motors
... Thus, e i 0 and I di 0 as t . The tracking error vanishes and the current I di will become zero to obtain the maximum torque. The proposed control laws have an important advantage of being free from manipulator ...
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