The paper proposes the current performance enhancing method for dual three-phase permanent magnet synchronous motor (DTP-PMSM) with identical back-electromotive force (EMF) two winding sets accounting common-mode (CM) suppression. Considering inevitable asymmetry of parameters in motor, pulse cancellation theory is proposed which releases duty cycle freedom conventional zero CM voltage (ZCMV) w...

Few studies have investigated physiologic and cognitive effects of "long-term" electromagnetic field (EMF) exposure in humans or animals. Our recent studies have provided initial insight into the long-term impact of adulthood EMF exposure (GSM, pulsed/modulated, 918 MHz, 0.25-1.05 W/kg) by showing 6+ months of daily EMF treatment protects against or reverses cognitive impairment in Alzheimer's ...

Control of magnetic levitation systems suffer from coupled physics regardless of control. Feedback control is used to robustly reject disturbances, but is complicated by this coupling. Improved performance is possible by decoupling dynamic disturbance torque, an attractive solution provided by the physics-based control design methodology. Promising approaches include elimination of virtual-zero...

This paper presents the implementation and characteristic analysis of a drive system for a three-phase permanent magnet motor with independent excitation winding that is applicable for electric bicycles. The design features improves the phase current waveform, output power, and torque by using advance angle control. This adjusts the phase angle of each phase current in relation to back EMF. In ...

Generator dapat menghasilkan listrik dengan tiga syarat, yakni : terdapat medan magnet, coil dan adanya perubahan flux yang melewati coil. Tempat untuk meletakkan pada generator disebut slot, jumlah slot berpengaruh karakteristik generator. Perubahan Back EMF KE. Simulasi menggunakan kawat lilitan diameter 1 mm. Pada penelitian ini dilakukan perancangan PMSG 12s10p, divariasikan slotnya menjadi...

This paper addresses the active torque ripple compensation of a permanent magnet brushless direct-current motor (PMBLDC) drive with new pulse width modulation (PWM) technique and advance angle method. Torque is well-known problem in BLDC motors which produced by discrepancy between stator current back electromotive force (back-emf) waveforms. The advanced method proposed this generates maximum ...

BACKGROUND Idiopathic environmental intolerance attributed to electromagnetic fields (IEI-EMF) remains a complex and unclear phenomenon, often characterized by the report of various, non-specific physical symptoms (NSPS) when an EMF source is present or perceived by the individual. The lack of validated criteria for defining and assessing IEI-EMF affects the quality of the relevant research, hi...

The operation of linear oscillating system is complicated, involving system nonlinearities of both actuator and load, and variations of driving frequency in order to track the mechanical resonance. In this paper, both analytical and state-variable modeling techniques are used to investigate the influence of actuator parameters, such as back-emf/thrust force coefficient and cogging force, on the...

A kind of integrated motor propulsor (IMP) which can be used in underwater propulsion is designed in this paper, and the rotor of its propelling motor employs the Halbach structure. This paper considers the characteristics of IMP, and coupling model of the motor is established. Time-stepping finite element method is used to analyze the field-circuit coupling problem, and research in the aspect ...