This paper evaluates the capability of saliency tracking to assess the health condition of permanent magnet synchronous motor (PMSM) drives operating under nonstationary conditions. The evaluated scheme is based on saliency tracking methods, which are associated to the accurate sensorless control of AC drives without zero speed limitations. In this work two representative saliency tracking arch...

Although nowadays ac drives are more frequently used, dc drives continue being used, mainly in industrial plants, as in Açominas. Normally, duals converters compose these drives, were faults related with them are important in relation with available time of equipments. Besides, speed sensors, as taco generator and pulse generator, are important factor to become these systems weaker. Then, in th...

This article provides an overview of the use supercapacitor energy storage systems in adjustable AC drives for various purposes. The structures power section combined (hybrid) supplies vehicle electric (hybrid vehicles and public transport vehicles) general-purpose industrial grade (cranes, freight, passenger lifts) are given. review focuses on problems inherent conventional solutions adopted i...

The need of higher power and more reliable applications have promoted the use multiphase alternating current (AC) drives. Mostly motors are used in wide speed operation range. To control motors, low region operated under pulse width modulation (PWM) mode high region, they square wave mode. In this paper, ripple characteristics inverter-fed multiple three-phase AC that dual (PWM modes) investiga...

 Abstract—This paper proposes a modulation strategy for multilevel multiphase diode-clamped dc-ac converters (also applicable to other functionally-equivalent topologies) able to keep the dc-link capacitor voltages balanced under passive front ends, low frequency modulation indices (i.e., low number of switching transitions per fundamental cycle), any value of the amplitude modulation index, a...