AM.I.A.K27
KnowledgeAC and DC motors.
From the FAA library
- Chapter 12: Fundamentals of Electricity & Electronics › AC Motors › AC Series Motor
AC Series Motor An AC-series motor is a single-phase motor, but is not an induction or synchronous motor. It resembles a DC motor in that it has brushes and a commutator. The AC-series motor operates on either ... AC or DC circuits. Remember that the direction of rotation of a DC-series motor is independent of the polarity of the applied voltage, provided the field and armature connections remain unchanged. Hence, if a DC-series motor is connected…
- Chapter 9: Aircraft Electrical System › Introduction › Alternating Current (AC) Introduction
DC, since AC voltages can be increased or decreased by means of transformers. Because more and more units are being operated electrically in airplanes, the power requirements are such that a number of advantages can be realized by using AC ... aircraft). Space and weight can be saved since AC devices, especially motors, are smaller and simpler than DC devices. In most AC motors, no brushes are required, and they require less maintenance than DC motors. Circuit breakers operate satisfactorily under…
- Chapter 12: Fundamentals of Electricity & Electronics › Rectifiers
DC for operation. This power may be furnished by DC engine-driven generators, motor generator sets, vacuum tube rectifiers, or dry disk or solid-state rectifiers. In aircraft with AC systems, a special DC generator is not desirable since ... engine accessory section to drive an additional piece of equipment. Motor generator sets, consisting of air-cooled AC motors that drive DC generators, eliminate this objection because they operate directly off the AC power system. Vacuum tube or various types…