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However in an induction motor the fields from the rotor decrease as speed increases. A permanent magnet motor generates its own constant field. This means that as speed increases a voltage is induced linearly with the speed on the stator. This voltage is negative to the voltage provided to the motor and thus is a loss to the overall system. [4]
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A permanent magnet synchronous generator is a generator where the excitation field is provided by a permanent magnet instead of a coil. The term synchronous refers here to the fact that the rotor and magnetic field rotate with the same speed, because the magnetic field is generated through a shaft-mounted permanent magnet mechanism, and current is induced into the stationary armature.
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Veronica Brown lived with chronic fatigue, depression, and anxiety for over 10 years before she learned they were early signs of Parkinson's disease. Here's how she found relief after diagnosis.
The main objectives of the fire and gas system are to: Detect at an early stage the presence of flammable gas using gas detectors. Detect at an early stage hazardous liquid spills. Detect incipient fire and the presence of fire using fire detectors. Provide automatic and/or facilities for manual activation of the fire protection system as required.
Tsoukalas, who is now in remission, is far from alone. Americans’ pent-up fury with the nation’s health insurance industry burst into the spotlight last week after the fatal shooting of ...
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