Among various maximum torque per ampere (MTPA) control schemes for interior permanent magnet synchronous motor (IPMSM) drives, the signal-injection-based methods exhibit relatively high overall performance due to their accuracy and satisfactory dynamic performance. However, current spectrum peaks induced by fixed-frequency signal injection may cause electromagnetic interference even audible noi...

The efficiency of an IPMSM motor is influenced by the operating point machine. Conventional approaches to generate measured maps may be too expensive use in some situations, thus it often replaced simpler variants based on parametric models. A promising approach combine model-based with online parameter identification methods which would allow following changes parameters. However, such also re...

We present an experimental method based on Ohm’s Law to calibrate the Keithley 6485 picoammeter with the calibration error less than 0.4 pico-ampere (pA), which is specified as the highest sensitivity of this instrument. The maximum calibration difference between the measurement current and the calibration current in the picoammeter’s 2 nano-ampere (nA) range is 0.25 pA. This difference is far ...

In this paper, an adaptive gain tuning rule is designed for the nonlinear sliding mode speed control (NSMSC) in order to enhance dynamic performance and robustness of permanent magnet assisted synchronous reluctance motor (PMa-SynRM) with considering parameter uncertainties. A surface whose parameters are altering time at first. The proposed NSMSC can minimize settling without any overshoot via...

Servo drives and drives for position control require a high dynamic on speed control. In this paper, model predictive direct speed control (MP-DSC) is proposed, which overcomes limitations of cascaded linear controllers. The novel concept predicts the future current and speed states in discrete steps and it selects plant inputs which depend mainly on the predicted speed error. Secondary control...

In this work, a proposed high-efficiency and low-cost photovoltaic water-pumping system based on semitransparent dye-sensitized solar cells (DSSCs) is presented. DSSCs are third-generation photovoltaics that have gained lot of interest as promising alternative for silicon cells. fabricated at low cost temperature present power conversions with high efficiency, exceeding 14%, thanks to transpare...

Interior permanent magnet synchronous machines are unavoidably subject to production tolerances. Quantities like permanent magnet flux or air gap thickness of a machine may deviate with regard to their nominal parameter values. Driven with a conventional torque control strategy this leads to inaccuracy of the output torque. Especially for traction drives in road vehicles, significant torque err...

Modern electrical traction uses asynchronous motors for driving railway vehicles because these have a lot of advantages in comparison with the classical, direct current motors. Reducing active and reactive energy consumption is concern case motors, meaning decrease exploitation costs. The research carried out shows, by results simulations, effects geometry optimization stator rotor lamination e...

A novel hybrid superconducting coupling (NHSC) is proposed in this paper, which the secondary composed of copper and a split superconductor. magnetic equivalent circuit (MEC) model presented to analyze calculate distribution field torque characteristics. The 3D modeling considers end effects encountered mating. expressions flux are obtained by combining Kirchhoff’s law Ampere’s lo...

In this study, the Axial Flux Synchronous Reluctance Motor (AF-SynRM) with multiple barriers in its rotor is designed and it aimed to compare performance Induction (AF-IM) same stator structure dimensions. For an equal comparison, motor dimensions are chosen same, only changed. preliminary study of designs, machine calculated analytically modeled 3D Finite Element Method (FEM). To optimize sali...