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In this paper, a microprocessor-based PMSM drive with three hall-effect sensors for detecting rotor position is studied. First, three PMSM control methods, namely 120° six-step with current limit, 180° six-step with current control, synchronous frame vector control, are compared based on some key performance indexes, such as vibration, acoustic noise and efficiency. According to the analysis, a PMSM...
The reliability and high efficiency of the power electronic drives used in electric vehicles is an essential requirement. To achieve high efficiency for the electrical drive system permanent magnet synchronous motors (PMSM) are employed. At high speed operation of the electric vehicles the electrical motors usually operate in the so called flux-weakening operation mode. When the control of the PMSM...
In the paper there are presented results of the sensorless control of AC drive with the permanent magnet synchronous motor. The method is based on the rotor magnetic flux components estimation. Practical realization was made by the microcomputer control system with the digital signal processor TMS320F2812. The graphical visualization of the electrical controlled drive was made by the software Lab...
This paper presents a rotor position estimation technique for a five-phase permanent magnet synchronous motor with independent phases, based on a back-EMF observer. The method involves the use of a proper linear transformation which allows representing the five-phase motor by an equivalent two-phase model. Due to its characteristics, the sensorless strategy can be used in multi-phase motors having...
The high performance drives of the permanent magnet synchronous motor can be achieved by vector control. In such high performance drive system, a high resolution position sensor is desired. In this paper, a new forecast algorithm is proposed to predict the position and speed of the rotor with only a low accuracy sensor, which is used instead of a conventional high-resolution position sensor. The new...
Control system of elevator door is a typical motor servo system, elevator door switch is the implementing agency. With the rapid development of the national economy, modern buildings is increasing, elevator is becoming an indispensable tool in daily life. Elevator normal operation is relation to personal safety, therefore, the elevator door not only demand the switch of action reliable and accurate,...
This paper proposes a field oriented control of PMSMS (permanent magnet synchronous motor with sinusoidal excitation) for wide speed range without current measurement sensors and using two Hall-effect sensors for position and speed estimation. The current sensors are eliminated, but the d- and q-axes armature currents are estimated using a Luenberger state observer with OC-link power input. The estimated...
In this paper, a neural network based rotor position control and speed estimation method for permanent magnet synchronous motor (PMSM) is proposed. The proposed method has three recurrent neural networks. They are used for estimating stator current, rotor speed, and rotor position angle. Each of them is trained in two steps: off-line training for learning dynamic of PMSM and on-line training for realizing...
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