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Search results for: electromagnetic
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Year: 2012, Volume: 12, Number: 2
... €“ axis equivalent circuit based on the steady-state power characteristics of the turbine, with base wind speed (= 9 m/s ); maximum power at The electromagnetic torque can be derived from: base wind speed (1 p.u of nominal mechanical power); base rotational speed (0.9 p.u of base generator speed) ...
Year: 2014, Volume: 14, Number: 3
... speed of space vector u (t) is given by: between limits that are to be taken into consideration. The d same applies to oscillations of resulting electromagnetic u (t) € € cos 2 (tg)/ (4) torque and, respectively, to the rotor speed, etc. dt ...
Year: 2012, Volume: 12, Number: 4
... [22]. The vector control needs to know Ψm- rotor flux linkage; the rotor position and usually uses an encoder for this Te, Tl €“ electromagnetic and load torque, respectively; purpose. There are also sensorless control algorithms that ‘s- stator angle relative to the d-q reference system; estimate the rotor ...
Year: 2020, Volume: 20, Number: 3
... reference frame (Fig. 1) is given by the voltage equations p- number of pole pairs; [5, 8]: Ce, Cr- electromagnetic and load torque, respectively; d ™s J- inertia moment of the DFIM; Vs € Rs I s € € j s ™ s (1a ...
Year: 2021, Volume: 21, Number: 4
... of the winding function. Such eliminate all the non-working harmonics, so that the ripples harmonics are grouped into a family of harmonic. Also, any in the electromagnetic torque are reduced. This is achieved change in the parameters (Nk) in (2) will equally affect all by formulating the optimization objective function to ...
Year: 2010, Volume: 10, Issue: 1
... ) machines, the only problem is finding the command method that gives us a six phase system with a less oscillatory cos(‰ot+ 4€ /3) electromagnetic torque. The problem consists in finding a matrix M known as the modulation matrix, so that II. THEORY OF THE MATRIX CONVERTER[ Vo]= ...
Year: 2007, Volume: 7, Issue: 1
... Electrical Dept. Abstract €” In the vicinity of the electric power network and international bodies have proposed or set limits referring to near to the power electrical equipments the electromagnetic the field values for the EMC phenomena and for the environment includes electric and magnetic fields, mainly at biological exposure. In some cases, in the vicinity ...
Year: 2015, Volume: 15, Number: 3
... output signal. coil. The operation principle of the vibrating wire transducer is based on the dependency of the wire's natural vibration Index Terms €” coils, damping, electromagnetic fields, frequency and the wire's tension [2 ], [18]. frequency, transducer. For the two coil transducer, an equivalent circuit is ...
Year: 2010, Volume: 10, Issue: 4
... is given in Fig. 7. comparator 2 is detected during the measurement, it is The detection (electrostatic capture) chamber contains assumed that it's produced by electromagnetic a photo element in a capsule that is filled up with the air perturbation. The measurement is abandoned after sample [4]. The capsule is placed ...
Year: 2011, Volume: 11, Number: 4
... using wedges made of soft energy that the rotor armature tends to align to. magnetic composite materials. The second solution consists in The cogging torque superposes over the electromagnetic properly choosing the combination of pole number and stator torque and generates vibrations and stress at the machine slots number that typically leads to a winding with fractional bearings ...
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