Discovery and understanding of electromagnetic induction ... induced emf is given by ε = ‒ (dϕ/dt). Negative sign shows that the current induced in a circuit always flows in such a direction ...

Abstract: Once upon a time, there was a cement kiln with a 5500-HP induced draft (ID) fan powered by a wound rotor induction motor. The process controlled the airflow with an inlet damper operating in ...

Abstract: In order to achieve the motion with multi-degree-of-freedom (multi-DOF) of the permanent magnet spherical motor, it is necessary to accurately obtain the rotor orientation of the spherical ...