Shaft position sensing is an essential part of switched reluctance (SR) motor drive In order to synchronize the pulses of phase current with the period of rising inductance of the proper motor phase. Direct sensors such as, Hall effect and optical encoder are commonly used in SR motors. The purpose of this paper is to present an indirect shaft positioning sensing known as "sensorless " control ...

Absrracl--A dual two-level inverter fed open-end winding induction motor drive is proposed in this paper. A total of 64 voltage space phasor combinations are possible in this scheme as each inverter produces eight voltage space phasors. The proposed scheme produces voltage space phasor locations similar to that of a 3-level inverter. In a 3-level Inverter the series connected DC link capacitors...

This paper presents an accurate tachometer model that takes into account the effect of magnetic coupling in a DC motor-tachometer assembly. Magnetic coupling arises due to the presence of mutual inductance between the tachometer winding and the motor winding (a weak transformer effect). Tachometer feedback is widely used for servo-control of DC motors, which can suffer from closed-loop instabil...

This paper presents a performance of the canonical switching cell (CSC) converter fed brushless DC (BLDC) motor drive for power quality (PQ) improvement. The use of CSC not only controlled the DC link voltage but also make the inverter to operate at low frequency so that switching losses are minimized. Moreover the use of front end CSC improves the power factor at AC mains. The system needs onl...

The continuous increase in the cost of fuel and effect emission gases from burned into atmosphere when operating engine powered lawn mower has necessitated use abundant solar energy sun as a power source mower. A was designed, fabricated assembled on basis general principle mowing. components are; direct current (DC) motor, rechargeable battery, panel, galvanized steel blade various thicknesses...