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induction motor, but a rotor with insulated windings brought out via slip rings and brushes. However, no power is applied to the slip rings. Their sole purpose is to allow resistance to be placed in series with the rotor windings while star...
The polyphase induction motor is the most commonly used industrial motor, finding application in many situations where speed regulation is not essential. It is simple and relatively inexpensive, and the absence of sliding contacts in the s...
drive for RPM control of a revolvable device, preferably a progressing cavity pump, is proposed. It comprises parallel driving and driven shafts, coupled respectively to a first and second substantially identical cone-shaped rotors, situate...
Wind turbine generation plants are an important technology for the large scale wind generation. The large plants have been already installed in European countries. There are several challenges in the way to get benefits from wind energy rel...
machinery. When a fault begins to develop, the vibration profile will change its characteristic shape. By using an appropriate signal processing method, it is feasible to detect changes in vibration signals caused by faulty components and t...
Permanent magnets provide the magnetic flux for the field. Direct current is switched to the armor with an electronic system called tabién electronic inverter , instead of brushes and commutator bars. BLDC motors are more frequently used ov...
commonly used, but when pulmonary arterial resistance is high, right ventricular assistance becomes necessary. Long term VADs are normally used to keep patients alive with a good quality of life while they wait for a heart transplantation ...