MOTORS FOR TRAM DRIVES

Electric Motors and Drives This Page Intentionally Left Blank Electric Motors and Drives

Selection of Servo Motors and Drives

The choice of motor and drive as well as mechanical transducer is a very important step in servo system design, because non-optimal selection leads to poor system performance and increased installation and maintenance costs. It is still an iterative process with skill in choice dependant on obtaining correct specifications and safety margins. Fundamental principles and procedures in selecting p...

Robust Fuzzy Sliding Mode Controller Design for Motors Drives

The synthesis algorithms of modern control theory and fuzzy logic have been studied to upgrade the performances of SMC. In this paper, Fuzzy sliding mode control, which takes the features of both SMC and FLC to overcome the disadvantage of chattering and enhancing the robustness of the controller, is presented. The fuzzy sliding mode controller is designed for a class of non linear dynamic syst...

Reference frames for simulation of electric motors and drives

Simulations of AC electric machines are usually performed in a coordinate system, or reference frame, with two axes (often denoted by d and q, or represented as a complex space vector). A third axis, the zero-sequence axis, is a homopolar axis that is necessary for handling certain unbalanced conditions. Historically, the transformation was essential to getting reasonable results, since computa...

Transient Effects of PWM Drives on Induction Motors

With the advances in semi-conductor devices, adjustable speed drives (ASDs) have become more prevalent than ever before in industrial and commercial processes. Many facilities are installing ASDs to improve the efficiency of their processes and to increase the control of their processes. While the effects of ASDs on the power system are well known, many engineers and systems integrators are not...