Abstract At present, sensorless becomes a research hit for its lower cost and smaller size, among the present methods, Luenberger Observer has outstanding advantages dynamic performance, parameter robustness high system stability. In this paper, model of which is based on state equation permanent magnet synchronous motor (PMSM), changes residence induce may lead to error are also analysed, in o...

The sensorless control of an axial flux permanent magnet motor drive is proposed and tested. The motor is not purposely designed for sensorless control and shows a very small inherent saliency. This significantly affects the saliency-based position estimation in the low speed region. Other nonidealities, such as the non-sinusoidal back-EMF waveforms and possible misalignment between stator and ...

SIMULATION OF POWER CONTROL OF A WIND TURBINE PERMANENT MAGNET SYNCHRONOUS GENERATOR SYSTEM Nantao Huang, B.S. Marquette University, 2013 This thesis presents a control system for a 2MW direct-drive permanent magnet synchronous generator wind turbine system with the objectives to capture the optimal power from the wind and ensure a maximum efficiency for this system. Moreover, in order to elimi...

The purpose of this study is to solve defects of the existing control strategy long convergence time, sliding mode chattering and so on. For Sensorless Brushless DC motor control strategy, a modified extended Kalman state correction estimation scheme is proposed, and dual mode high-order nonsingular terminal hybrid sliding mode control technology is put forward. TMS320F2812DSP core controller a...

This paper presents a sensorless estimation algorithm for estimating flexible system parameters, dynamics and externally applied forces or torques due to system interaction with the environment. The proposed algorithm makes it possible to design a chain of observers that require measuring actuator’s current and velocity along with performing two off-line experiments that do not require any addi...

Designers can expect environmental demands to continue to drive the need for advanced motor control techniques that produce energy efficient air conditioners, washing machines and other home appliances. Until now, sophisticated motor control solutions have only been available from proprietary sources. However, the implementation of advanced, cost-effective motor control algorithms is now a real...

In this paper, the behavior of a doubly fed induction generator (DFIG) is proposed under an unbalanced grid voltage and without using a rotor position sensor. There are two main methods that have been used for the detection of rotor position: use of a shaft sensor and use of a sensorless algorithm. In this paper the shaft sensor is eliminated and a position sensorless algorithm is used for esti...