This paper proposes an extended-flux model with core-loss resistance of SynRMs (synchronous reluctance motors) and precise torque estimation without core-loss measurement and position encoder. The proposed torque estimation is useful for precise MTPA (maximum torque per ampere) control of position sensorless controlled SynRMs, which is achieved with the assistance of active and reactive powers.

To develop electrical busses for applications with a fast recharge system in stations, PVI has been testing some electrical energy components like supercapacitors and batteries with high power density. Neverthless, supercapacitors limit average autonomy between two recharge points, due to their poor energy density. On the other side cycle life of batteries are very dependent on current. To surm...

Disorders of consciousness are neurological conditions associated with low levels of functioning which pose a serious challenge to public health systems. The current study aimed to examine longitudinal changes in functioning in patients with disorders of consciousness and to identify associated biopsychosocial factors using the International Classification of Functioning, Disability, and Health...

The Dirichlet problem for a Monge-Ampère equation corresponding to a nonnegative, possible degenerate cohomology class on a Kähler manifold with boundary is studied. C1,α estimates away from a divisor are obtained, by combining techniques of Blocki, Tsuji, Yau, and pluripotential theory. In particular, C1,α geodesic rays in the space of Kähler potentials are constructed for each test configurat...

Background & Aims of the Study: Spent filter backwash water (SFBW) consists of 1-5% of the total treated water typically and it has a high turbidity. Because of the scarcity of water resources and in order to prevent the environmental contamination, effluent treatment of rapid sand filter backwashing is unavoidable. One of the new technologies for removal of turbidity from the ...

This paper presents novel maximum torque per ampere (MTPA) and power (MPPA) sliding mode control (SMC) approaches for interior permanent-magnet synchronous motors (IPMs). We first derive the first-order SMC methods to improve field-oriented control's resiliency against external perturbations, extraneous noise modelling uncertainties. After that, we propose higher-order significantly reduce chat...

Material A 106 Gr. B termasuk dalam material seamless carbon steel pipe, dan sering digunakan untuk high-temperature service. Penelitian ini pemodelan menggunakan pipa B, 4 inch, sch 80 dengan panjang 150 mm. Proses pengelasan yang adalah GTAW SMAW. Untuk menemukan proses las parameter paling efektif pada setiap layer flowline, membandingkan variasi kuat arus listrik terhadap hasil uji sifat me...

Research has been carried out on the design and simulation of human power plants to charge mobile phones. The generator is designed as a linear motor due ergonomic considerations. A case study was conducted charging 2000mAh battery. results showed that at voltage 5 Volts, current 4 Ampere with 1 hour use able 20% 2000 mAh While Volts strong 3 Ampere, electric used battery by 15% power.