Journal ArticleDOI
A grid-interactive photovoltaic uninterruptible power supply system using battery storage and a back up diesel generator
TLDR
In this article, a grid interactive photovoltaic uninterruptible power supply (UPS) system using battery storage and a back up diesel generator is presented, which has demonstrated the capability of the system to provide uninterrupted power, demand side management function and load voltage stabilization in a grid which experiences frequent blackouts and under/over voltage problems.Abstract:
This paper presents a practical implementation of a grid interactive photovoltaic uninterruptible power supply (UPS) system using battery storage and a back up diesel generator. The system incorporates 2.5 kWp of photovoltaic arrays, a 10 kVA power conditioning unit capable of operating in both inverting and charging modes, and a 300-Ah battery bank. Two such systems were installed in two Indian cities. The project was implemented using soft loans available in India through a World Bank Loan for photovoltaic market development. The system has been working satisfactorily since May 1997 and has demonstrated the capability of the system to provide uninterrupted power, demand side management function and load voltage stabilization in a grid which experiences frequent blackouts and under/over voltage problems. Some results from the field installation are also included in this paper.read more
Citations
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Patent
Distributed Power Harvesting Systems Using DC Power Sources
TL;DR: In this article, the converters are coupled in series and an inverter is connected in parallel with the series connection of converters and inverts a DC input to the inverter from converters into an AC output.
Journal ArticleDOI
Investigation of Methods for Reduction of Power Fluctuations Generated From Large Grid-Connected Photovoltaic Systems
TL;DR: In this article, the authors investigated three methods that can be used to reduce the fluctuations in the power generated from a large customer-owned photovoltaic (PV) system, in the order of megawatts.
Journal ArticleDOI
Voltage Support Provided by a Droop-Controlled Multifunctional Inverter
TL;DR: This paper presents a single-phase multifunctional inverter for photovoltaic (PV) systems application that allows the obtaining of voltage-sag-compensation capability, endowing voltage ride-through to the system.
Journal ArticleDOI
Power Control Design of a Battery Charger in a Hybrid Active PV Generator for Load-Following Applications
TL;DR: A continuous dynamic model and a control design of the power system studied are proposed in this paper, which makes it possible to ensure a high battery state of charge and overcharge security by designing a dedicated local control system.
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Monitoring of Distributed Power Harvesting Systems Using DC Power Sources
TL;DR: A monitoring system and method for monitoring performance of individual powers sources in a distributed power source system is presented in this paper, where a monitoring module is coupled to each of the power sources or to each string of serially connected power sources to monitor and collect data regarding current, voltage, temperature and other environmental factors at the power source.
References
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Book
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TL;DR: In this paper, the authors present a simulation of power switch-mode converters for zero-voltage and/or zero-current switchings in power electronic converters and systems.
Journal ArticleDOI
A single phase parallely connected uninterruptible power supply/demand side management system
TL;DR: In this article, the application of a single-phase parallel converter as an uninterruptible power supply and demand side management system is presented. And the proposed system consists of a bi-directional inverter that is connected in parallel to the utility system.
Journal ArticleDOI
Design and implementation of a demand-side multifunction battery energy storage system
TL;DR: A new control strategy in a battery energy storage system (BESS) for multifunction operation is presented and basic principle from the conventional control method is used and modified to accomplish the desired operation function.
Proceedings ArticleDOI
A single phase uninterruptible power supply system using a bidirectional sinusoidal PWM inverter
TL;DR: In this article, an uninterruptible power supply system using a bidirectional sinusoidal PWM inverter is presented, which offers a smooth transition during grid failure, load voltage stabilisation under varying input grid voltage and lower line current harmonic distortion.
Journal ArticleDOI
Operation control of paralleled three-phase battery energy storage system
TL;DR: In this paper, a parallel operation for capacity enlargement of a three-phase battery energy storage system (3/spl phi/BESS) is presented, which consists of some inner-loop parallel-connected current-regulated pulse width modulated (CRPWM) converters, a current command distributor and an outer-loop common controller.