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This paper deals with a new Autonomous Wind Energy Conversion System (AWECS) employing parallel operated Permanent Magnet Synchronous Generators (PMSGs) driven by variable speed wind turbines and feeding three-phase four-wire local loads. The proposed system utilizes three Pulse Width Modulated (PWM) Insulated Gate Bipolar Transistors (IGBTs) based voltage source converters (VSCs) with a battery energy...
The subject of the identification of the equivalent circuit parameters of large synchronous generators is revisited. The equivalent circuit of Park is used. On-line measurements are used in a Kalman filter to estimate the machine parameters. The formulation is linear and the extended Kalman filter is not needed. The approach is similar to that of Harley (1992), but flux linkages are not used in the...
This paper deals with an isolated wind-hydro hybrid generation system employing one Permanent Magnet Synchronous Generator (PMSG) driven by hydro turbine and another PMSG driven by a variable speed wind turbine feeding three-phase four-wire local loads. The proposed system utilizes two back to back connected Pulse Width Modulated (PWM) Insulated Gate Bipolar Transistors (IGBTs) based voltage source...
This paper deals with an isolated wind-hydro hybrid generation system employing a Squirrel Cage Induction Generator (SCIG) driven by hydro turbine and a Permanent Magnet Synchronous Generator (PMSG) driven by a variable speed wind turbine feeding three-phase four-wire local loads. The proposed system utilizes two back to back connected Pulse Width Modulated (PWM) Insulated Gate Bipolar Transistors...
In this paper, an autonomous wind energy conversion system (WECS) is proposed using a permanent magnet synchronous generator (PMSG). The voltage and frequency (VF) of the stand alone WECS is controlled using a voltage source converter (VSC) with a battery energy storage system (BESS) at its dc link. A Scott-connected transformer is proposed for the neutral current compensation of the three-phase four-wire...
In this paper, a distributed generation based on stand alone wind energy conversion system (WECS) using a permanent magnet synchronous generator (PMSG) is proposed with a solid state voltage and frequency (VF) controller. A high efficiency WECS is realised using a PMSG driven by a wind turbine with a gear system. The controller consists of IGBTs (insulated gate bipolar transistors) based voltage source...
This paper deals with model of battery energy operated system for a 42.5kVA DG set using Simulink and Power System Block-set in MATLAB environment. Battery Energy Storage System (BESS) is employed for compensation along with a small synchronous generator of 42.5kVA capacity coupled to a diesel engine as a prime mover. The DG set feeds a wide variety of loads. The performance of the system is simulated...
This paper presents the control of distribution static compensator (DSTATCOM) for reactive power, harmonics and unbalanced load currents compensation on diesel generator (DG) set for isolated system. The control of DSTATCOM is achieved using least mean square (LMS) based Adaline. The Adaline is used to extract the balanced positive sequence real fundamental frequency component of load current and...
This paper presents the operation of battery energy storage system (BESS) with diesel generator (DG) set. The performance of the DG set is observed best when operated at full load or near full load (up to 70-80% load) condition. For this purpose a BESS is employed which ensures the load on the generator remains in between 80% to 100% of full load. Under light load condition (load less than 80%) the...
In this paper we propose a screening method and suitable software program to analyze contingencies and their impact on static voltage stability in large power systems. The program substantially reduces the number of load flow simulation for contingency analysis and voltage stability studies and is based on the impact of the contingency on the load, and the available Mega Watt Margin (MWM). The program...
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