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Electric power quality is the most essential part in relation with utilities and consumers. Almost all our day today electronic equipments are extremely sensitive to even a slight variation in electric supply. The probability of power quality is very dominant in this point of consideration. The sensitivity factor of various sensor equipments can improve safety to the surroundings but of the same it...
Space vector based pulse density modulation scheme is a control method proposed for multilevel inverter producing octadecogonal space vector. A multilevel inverter is constructed by connecting two level inverter at right end and three level inverter at left end of a three phase transformer winding whose secondary is star connected. This inverter is fed with three different DC voltages possible of...
The paper proposes the application of constant frequency unified power quality conditioner to overcome the power quality issues in fixed speed wind mill connected with the micro grid. The power circuit of a constant frequency unified power quality conditioner (CF-UPQC) is based on a combination of UPQC, and frequency regulator (matrix converter). This equipment incorporates compensation functions...
Wind power plant meets so many power quality issues when it is connected with strong grid. This paper proposes a new power quality conditioner to regulate the supply frequency, to control the power flow, to minimize the current harmonics, and to regulate the voltage for fixed speed induction generator type wind generator. The name of the proposed new power line conditioner is called as Universal Power...
In micro grid many power quality issues like voltage sag, swell, power frequency variation, and harmonics are present. This paper proposes a new power line conditioner called Universal Power Line Manager for micro grid. The power circuit of a general universal power line manager (UPLM) is based on the combination of UPQC, UPFC and frequency changer (matrix converter). This equipment incorporates compensation...
The aim of this paper is to maintain the constant frequency in the utility using constant frequency unified power quality conditioner. A constant frequency unified power quality conditioning system (CF-UPQC) consists of a unified power quality conditioner (UPQC) and a Matrix converter based frequency changer. UPQC is a combination of series active and shunt active filter. The series active filter...
The paper proposes a new power line conditioner called universal power line manager. The power circuit of a general universal power line manager (UPLM) is based on the combination of UPQC, UPFC and frequency changer (matrix converter). This equipment incorporates compensation functions like voltage sag, voltage swell, reactive power compensation, current harmonic rejection, real power flow control,...
Unified power flow controller (UPFC) has been widely used to enhance damping of power swings. The control strategy adopted to mitigate power system oscillations in an effective and robust manner is the key issue. Various control methods used to improve the transient stability based on optimal parameters, state variables and injection model were studied. A scheme based on fuzzy bang-bang control is...
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