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The rotor position detection of switched reluctance motor speed control system, an important part of the direct position detection technology can provide a stable rotor position signals, but need to add additional mechanical structure, thus limiting the scope of application of the switched reluctance motor. At present, the position sensor detection technology is one of the top of the switched reluctance motor areas of research. Comprehensive first volume of the domestic and international switched reluctance motor position sensor detection technology Research, is described in detail the principle of each typical detection methods, their advantages and disadvantages of the scope of specific discussion and objective review, and the exhibition looked trends.
The new five-position sensor detection technology has important reference value. The switched reluctance motor is a new type of mechanical and electrical integration speed motor, with simple, sturdy, easy speed control, flexible control, high reliability, fault tolerance, has been gradually applied in the field of civil, locomotive and aerospace has a broad application of vision.
The link of the position detection is an important part of the switched reluctance motor drive system, the detected position signal is a winding opened and off based on the speed closed-loop control of speed information. The rotor position detection is the direct use of the photoelectric, electromagnetic and magnetic type, position sensors, with the motor phase increase in the number, the number of sensors required will be increased. The existence of the rotor position sensor not only increases the complexity of the system, and gave the installation, commissioning great inconvenience, and seriously undermine the simple structure of the upper hand in the SRM reduces the system reliability, and difficult to achieve high-speed motor control, limiting the SRM applications. Therefore, the inherent information of how to swap position detector, the use of motor indirectly determining the rotor position is undoubtedly a promising research direction.