Switched Reluctance Motors (SRMs) are increasingly popular machines in electrical drives, whose performances are directly related to their operating conditions. Their dynamic characteristics vary as conditions change. Recently, several methods of the modeling of the magnetic saturation of SRMs have been proposed as analytical functions. However, the SRM system is nonlinear and cannot be adequat...

Switched reluctance motors (SRM) becomes increasingly popular due to its simple structure and dependability. It seems have a two-pole configuration. A stator had also centralized coils along each pole, whereas rotor has an iron core only. As result, the switched motor is anticipated be low cost, incredibly robust variable-speed machine. Because only made up of laminated coils, performance heavi...

In this paper, a Switched Reluctance Motor (SRM) drive system is proposed to make trade-off between torque profile and vibration amplitude. the system, power factor correction fast demagnetization are achieved using single-phase Vienna rectifier as front-end converter for SRMs with nominal voltage equal half DC-link voltage. The three-level provides doubled negative in demagnetization, resultin...

In this work, three control techniques of minimization torque ripple in SRM are proposed and compared to the classical technic names as Hysteresis [1]. The principle these methods is based on Torque Sharing Function (TSF) fixing reference each phase. literature review, method used reduction ripples TSF-Hysteresis Controller (TSF-H). first TSF-Predictive (TSF-P), here objective find voltage be a...

Shear piezoelectric motors frequently require large voltage changes on very short time scales. Since piezos behave electrically as capacitors, this requires a drive circuit capable of quickly sourcing or sinking a large amount of current at high voltages. Here we describe a novel circuit design using a high voltage amplifier, transistor switching stage, and auxiliary capacitor. This circuit can...

Prolonged wakefulness leads to an increased pressure for sleep, but how this homeostatic drive is generated and subsequently persists is unclear. Here, from a neural circuit screen in Drosophila, we identify a subset of ellipsoid body (EB) neurons whose activation generates sleep drive. Patch-clamp analysis indicates these EB neurons are highly sensitive to sleep loss, switching from spiking to...

The energy utilization ratio (ER) quantifies the of a Switched Reluctance Motor (SRM). Calculation ER an SRM can be different from other motors as it has highly non-linear operating characteristics and uses asymmetric bridge converter. In this paper, concept for SRMs been explained first then computation methodology is presented based on co-energy stored in magnetic system. are evaluated ANSYS ...

This paper presents the implementation of blushless DC (BLDC) motor control algorithm by using a Field Programmable Gate Array (FPGA) and the design of a fast responding BLDC motor drive circuit on an autonomous miniature quadcopter. The algorithm involves implementation of acceleration, deceleration, and equalization energy step change function in motor control the strategy. In order to design...