Permanent magnet synchronous motor

Liu Yi, Tan Guo-jun, Li Yuan, Permanent Magnet Synchronous Motor Wind Power System Base on Dual Three-Level Converters, Electric Machines Control Apphcation,... 

A feasible gearless conveyor drive (GCD) concept for medium power conveyor drives based on a permanent magnet synchronous motor was introduced. This new concept allows implementation of a gearless motor into existing or new medium power conveyor, which was not feasible with conventional gearless motors up to now. The new concept has been proved by a case study. 

The brushless DC motor (BLDC motor) is really an AC motor The current through it alternates, as we shall see. It is called a brushless DC motor because the alternating current must be of variable frequency and so derived from a DC supply and because its speed/torque characteristics are very similar to the ordinary with brushes DC motor. As a result of the brushless DC not being an entirely satisfactory name, it is also, very confusingly, given different names by different manufacturers and users. The most common of these is self-synchronous AC motor , but others include variable frequency synchronous motor , permanent magnet synchronous motor , and electronically commutated motor (ECM). 

Demagnetizationsdiagnosis for Permanent Magnet Synchronous Motors based on advanced Wavelet Analysis. Proceedings—2012 20th International Conference on Electrical Machines, ICEM 2012, art. no. 6350219 pp. 2397-2403. 

Rosero, XA., Cusido, J., Garcia, A., Ortega, J.A. Romeral, L. 2006b. Broken bearings and eccentridty fault detection for a permanent magnet synchronous motor. lECON Proceedings (Industrial Electronics Conference), art. no. 4153044 pp. 964—969. 

Ruiz, J.-R.R., Garcia Espinosa, A., Romeral, L. Cusido, J 2010. Demagnetization diagnosis in permanent magnet synchronous motors under non-stationary speed conditions. Electric Power Systems Research 80 (10) pp. 1277-1285. 

Synchronous Motor, Brushless DC-Motors, Synchronous Reluctance, and Permanent Magnet Stepper Motors... 

Up to four electric motors, each comprising 30 kW, were used to drive the vehicle. Each wheel had a converter feeding a motor to drive the wheel directly. As it was a mobile testing array, all four motors were of different types but all had the same nominal power of 30 kW. Thus, at the front, there was a permanent-magnet wheel motor with sine control and a permanent-magnet wheel motor with trapeze control. The magnets in these motors were mounted on the surface. At the rear, there was an induction motor with vector control and a synchronous claw-pole motor with sine control. The converters were adapted to the type of motor, with only the level of control in terms of torque, and therefore current, being pre-defmed. It was the front motors which offered the best performances, particularly for the startup torque, which reaches up to six times the nominal torque of 700 N.m. 

Advise of exciter power characteristics available, or specify manufacturer to provide required exciter (small synchronous motors may use permanent magnets) as direct-connected, belt-driven, or motor-generator set. 

Permanent magnet (PM) synchronous motors have found more applications in recent decades by industries and applications where space, weight, and energy efficiency are driving factors. Direct drives with rated speed of around 300 rpm for paper machines, marine drives or wind generators with rated speeds as low as 10 rpm require efficient motor technologies. Major users have been the marine and wind power markets where weight and space reduction... 

The Institut fiir Mikrotechnik, Mainz in Germany, has developed a highly reliable micromotor [329]. A synchronous motor scheme with a rotating permanent magnet has been employed (Fig. 6.126a). The micromotor featur-... 

The Escape uses a permanent-magnet AC-synchronous electric motor with an output power rating equal to 94 HP. 

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