A new maximum power extraction (MPE) controller for variable speed permanent magnet synchronous generator (PMSG) wind energy conversion systems (WECS) is proposed. The proposed controller generates optimum speed reference signal for the speed control loop of the vector controlled machine side converter control system without requiring the knowledge of wind speed using only active power and air ...

Abstract:The aim of this paper is analyzing the operation of stand-alone wind turbine system with variable speed permanent magnet synchronous generator (PMSG) and a system for storing energy during wind speed and load variations and supply the single phase energy for domestic appliances. The power absorbed by the connected loads can be effectively delivered and supplied by the proposed wind tur...

An attempt is made to induce the pethidine suppressed gonadal activities by the administration of exogenous gonadotropins (hCG, PMSG, hCG + PMSG). Administration of 5 IU gonadotropins either separately or in combination to the rats treated with pethidine for 30 days resulted in the significant increase in the weight of testis, diameter of testis and seminiferous tubules. Gonadotropin(s) treatme...

Variations of marine current speed can lead to strong fluctuations in the power extracted by a marine current turbine (MCT). During short-time period, swell effect is the main cause for the current speed variations. Conventional tip speed ratio Maximum Power Point Tracking (MPPT) algorithm will require the MCT to accelerate or to decelerate frequently under swell effect, which can cause severe ...

The common palm civets (Paradoxurus hermaphroditus) belong to the family (Viverridae), carnivores order (Carnivora). This animal is widely distributed in South and Southeast Asia. Currently, are raised quite popular Vietnam. delay breeding for first time slow rut has reduced economic efficiency civet farming. study was carried out evaluate effectiveness of different doses hormones (PMSG, HCG) o...

Permanent magnet synchronous generators (PMSG) have a huge potential for direct-drive wind power applications. Therefore, optimal design of these generators is necessary to maximize their efficiency and to reduce their manufacturing cost and total volume. In this paper, an optimal design of a six-phase 3.5 KW direct-drive PMSG to generate electricity for domestic needs is performed. The aim of ...

The recently stipulated grid codes require wind generators to re-initiate normal power production after voltage sag. This paper presents a comparative performance of two commonly employed variable speed turbines in today’s electricity market, the doubly fed induction generator (DFIG) and permanent magnet synchronous (PMSG) turbines. evaluation both was performed for weak, strong grids, consider...

Small Permanent Magnet Synchronous Generators (PMSGs) are widely used in small rooftop wind turbines. In order to inject the electric power generated by PMSG, into grid, a back-to-back AC/DC/AC converter is required. this paper, low cost with high efficiency proposed for rectifier stage obtain maximum per ampere of PMSG. This structure based on Discontinuous Conduction Mode Single-Ended Primary...

Frequency regulation is a critical issue in the islanded microgrids, especially integration of high penetration wind power generator. In order to provide inertial and primary frequency support system, this article proposes an equivalent rotor speed compensation control scheme PMSG for microgrids. A new variable combining pitch angle defined as speed. The versus de-loaded curve designed preserve...

This paper aims to implement a new contribution for sliding mode control (SMC) of permanent magnet synchronous generator (PMSG) wind systems conversion with track the maximum power point tracking (MPPT) power. The SMC is very popular approach due its robustness in dealing non-linear electrical systems. In this work, application by using non lineare model PMSG. objective work stator active and r...