The use of the interior permanent magnet synchronous motor (IPMSM) has increased in the industrial field because of
its excellent characteristics such as high efficiency, wide range of speed operation, and flexibility of the rotor structure.
Therefore, IPMSM, especially one using the rare earth permanent magnet, is being actively studied. In IPMSM using the
rare earth permanent magnet, typically the permanent magnet is deeply embedded in the rotor. The washing machine has
large load variation and needs high torque. So, IPMSM is better than any other motor types for washing machines. This
paper suggests a control algorithm of IPMSM for washing machines. Some experimental results are given in order to
show the feasibility of the proposed control schemes for washing machines.
BLDC motors have many advantages over brushed DC motors and induction motors. So, BLDC motors extend their
application to many industrial fields. In this paper, the digital simulation and modeling of a 7-phase brushless DC motor
have been presented. The 14-switch inverter and a 7-phase brushless DC motor drive system are simulated using
hysteresis current controller and logic of switching pattern with the Boolean¡s function. Through some simulations, we
found that our modeling and analysis of a 7-phase BLDCM with PWM inverter would be helpful for the further studies
of the multi-phase BLDCM drive systems.
In home appliances, electric energy is optimally controlled by using power electronics technology, creating a comfortable environment in terms of energy saving, low sound generation, and reduced time consumption. Usually simplicity and robustness make the three phase induction motor attractive for use in domestic appliance, including washing machines. Two main types of domestic washing machine have evolved. We focus on efficiency of the front loading machine favored in Europe, which has a horizontal drum axis. This paper presents the control algorithm for optimal efficiency drives of an induction motor for drum washing machine. This system uses a simple model of the induction motor that include equations of the iron losses. The proposed optimal efficiency control algorithm calculates commands of the reference torque and flux currents for the flux oriented control of the induction motor. The proposed algorithm is verified through digital simulation.
Proc. SPIE. 6042, ICMIT 2005: Control Systems and Robotics
KEYWORDS: Mathematical modeling, Digital signal processing, Phase modulation, Control systems, Signal processing, Picosecond phenomena, Adaptive control, Systems modeling, Device simulation, Fuzzy logic
A full fuzzy-logic-based vector control for a permanent-magnet synchronous motor(PMSM) was proposed. The high-performance of the proposed fuzzy logic control(FLC)-based PMSM drive were investigated and compared to those obtained from the conventional proportional-integral(PI) controller at different conditions such as step change in command speed and load, etc. In the simulation and experimental results, the fuzzy-logic controller was employed in the speed and current controller. The comparative experimental results show that the FLC is more robust and, hence, found to be a suitable replacement of the conventional PI controller for the high-performance drive system.