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Unity power factor injection from single-phase photovoltaics (PVs) located towards the end of a residential feeder leads to voltage rise problems. Also, unbalanced current injection due to variable solar insolation results in voltage unbalancing and makes the situation worst. A decoupled controller for a single-phase PV inverter is proposed to improve the voltage profile of the distribution feeders...
This paper presents the robust tuning of power system stabilizer (PSS) with modified harmony search (MHS) algorithm. The problem of selecting appropriate design parameters of PSS is formulated as an optimization problem with minimization of eigenvalue based multi objective function. This objective function is optimized to alleviate the poorly damped or unstable oscillatory modes of the power system...
This paper presents an application of adaptive control for the integration of single phase single stage solar photovoltaic (SPV) system to a single phase AC grid. The primitive of this integration of single-phase SPV system with the grid comprises of mitigation of harmonics, reactive power compensation and PFC (Power Factor Correction). It deals with a new mean adaptive detection (MAD) technique based...
In a power system network, the system power needs are met by all the generating stations working in coordination. When there are many power generating units, a lot many operating strategies are possible to meet the time based varying power demand. In this paper, an optimization study is carried out to checkout the cost effectiveness of using a deloaded photovoltaic (PV) instead of battery. The three...
This paper presents an active noise isolation (ANI) based control algorithm for single-phase single-stage solar photovoltaic (SPV) system connected to the AC grid. An ANI based algorithm used to control a voltage source inverter (VSI) which performs load compensation, harmonics mitigation, feeding solar power into the AC grid and many other power qualities issues. The proposed system comprises SPV...
This paper proposes a dq0-frame deadbeat (DB) controller used in a voltage source converter (VSC) based high voltage direct current (HVDC) system to incorporate robust controller behaviour during sudden transient grid disturbances. Furthermore, stability analysis alongwith controller response to tracking objective and parameter uncertainties has been discussed. Finally, a comparative analysis with...
This paper presents an intelligent diagnosis technique for wind turbine imbalance fault identification based on generator current signals. For this aim, Proximal Support Vector (PSVM), which is powerful algorithm for classification problems that needs small training time in solving nonlinear problems and applicable to high dimension applications, is employed. The complete dynamics of a permanent magnet...
This paper proposes a control scheme for single phase inverter based systems. The inverter controller consists of two loops; the inner current control loop which is the faster one while the outer voltage / active and reactive power control loop is the slower one. A Lyapunov based inner (current) control is presented in this work which robustly tracks the reference current independent of the system...
The active power distribution network operation under integration of different renewable distributed generations, storage units and dynamic loads is becoming of interest due to substantial benefit in maximizing the penetration of available renewable energy resources (RES). In this paper, an approach to maximize the penetration of RES like solar, wind etc. into active distribution system (ADS) by maximum...
This paper proposes the idea of using Solar Energy as a source of power for designing and developing standalone air cooling system with longer life, less maintenance and better performance, particularly useful for rural areas that have a considerable amount of solar radiation and have no access to grid systems. This system comprises of a photovoltaic (PV) array along with DC-DC boost converter that...
In this paper, Fuzzy Q Learning (FQL) based an adaptive self learning wind turbine fault diagnostic model is proposed using generator current signals. Proposed FQL classifier is capable to achieve very high classification accuracy with small number of samples. This is our first attempt to design such type of classifier using reinforcement learning for fault identification of wind turbine. The beauty...
This paper proposes a central control framework to coordinate proportionate charging of batteries based on their capacity in an autonomous DC microgrid. This serves the purpose of longevity and reliability issues in an autonomous microgrid. The uneven distribution of power based on a preferential charging/discharging approach is implemented using a multi-input single output(MISO) mamdani based fuzzy...
This paper deal with an improved adaptive detection (IAD) control approach for a grid tied solar photovoltaic (SPV) system. The SPV grid interfaced systems are facing several power quality issues due to extensive use of nonlinear and reactive loads. To eliminate these problems, an IAD based control approach for the proposed system is implemented for the mitigation of harmonics, reactive power and...
The large scale penetration of static energy sources in the realm of a distribution system makes the utility grid more vulnerable to disturbances as the effective inertia of the power system is decreased. While it is not expected from the inverters placed in low voltage (LV) network to participate in the frequency regulation, it is however, beneficial if such sources are harnessed for frequency and...
In real time field conditions, situation arises when sudden and a large change in insolation level occurs. Such frequent fluctuations in irradiation level, affects adversely the performance of Photovoltaic (PV) based water pumping system. Sudden large fall in insolation leads to generation of PV power which is insufficient for operation of motor-pump system and such frequent variations in insolation...
This paper proposes a non-linear control strategy to curb for the non-linearities and parameter uncertainties for a grid connected system. Since the conventional techniques performance rely highly on the tuned controller gains prior to grid impedance, its performance deteriorates over time. To incorporate these non-linearities, an adaptive backstepping control strategy has been used subjecting to...
This paper presents a novel consensus priority algorithm based V2G charging framework to combat fluctuating loads as well as generation shortage on a large scale consequently resulting into frequency deviation. A consumer input database has been maintained whilst charging so that frequency response is coordinated from the plug-in electric vehicles as per the battery longevity requirements within a...
This paper deals with a single stage SPV (Solar Photovoltaic) grid interfaced energy conversion system with sign-sign LMS (Least Mean Square) based control algorithm. The proposed system consists of SPV array, VSI (Voltage Source Inverter), AC grid and nonlinear loads. The single stage SPV grid interfaced system having to retain the capital cost investment, land and maintenance alone with PFC (Power...
In this paper an modified MISO DC-DC converter based Photovoltaic (PV) water pumping system is designed for population living in remote areas to fulfill their water pumping requirement for various applications like drinking water, water for irrigation and daily needs etc. With the objective of improvement in performance and efficiency of PV based water pumping system and thus to justify its installation...
Partial shading and/or mismatching phenomena in Photovoltaic (PV) based system cause reduced extraction of PV power and thus adversely impact the performance of PV based system; especially in case of stand-alone PV systems. In this paper four different configurations namely single stage PV system, centralized DC-DC converter based PV system, PV panel level Distributed maximum power point tracking...
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