utility-scale inverter Articles

  • Are inverters PV’s Achilles Heel?

    The organizers of the Utility Scale PV Yield Optimization Conference & Expo, gained exclusive access with Michael Levi, Senior Director Worldwide Marketing from Satcon to talk about the inverter market for utility solar projects, how they are positioning themselves in a competitive market and how reliable are these key components. Q1:  What segment of the solar market are you ...


    By FCBI Energy

  • Regenerative snubber for UPS inverter

    An uninterrupted power supply (UPS) is used to provide electrical power to a load during an emergency situation in which the main utility power is not available. UPS topologies are well known. The inverter plays the most important role as an element in the UPS system. Usually, pulse width modulated inverters with voltage control and waveform shaping are used in UPS. This paper proposes an ...


    By Inderscience Publishers

  • Digital control of a three-phase grid connected inverter

    This paper presents the design and practical implementation of a digital current controller for a three-phase PWM voltage source inverter connected to the grid via an LCL filter to produce a high quality current injected into the grid. A two-feedback loops control system is proposed, with an outer grid current loop and an inner filter capacitor current loop. The controller also incorporates a ...


    By Inderscience Publishers

  • Development of LabVIEW–based multilevel inverter with reduced number of switches

    In the present scenario, the development of multilevel inverter is becoming popular for industrial applications and higher scale renewable green power technologies such as fuel cell, PV cell and wind turbine systems connected to the load. But the traditional multilevel topologies have large components and complex Pulse Width Modulation (PWM) controller leading to reduced harmonics and voltage ...


    By Inderscience Publishers

  • Controlling the number of on-grid multiple photovoltaic inverters to improve their conversion efficiency

    Two experimental PV-grid connected systems of 8.8 kWp and 36 kWp rating have been designed, installed and interfaced with Abu Dhabi utility grid. The PV arrays of both systems are interfaced with the grid via single phase grid-tied inverters. The inverters are installed in three separate groups that each injects 50 Hz electricity into one phase of the utility grid at the 0.4 kV level. The main ...


    By Inderscience Publishers

  • Inverting sustainable development? Rethinking ecology, innovation and spatial limits

    Over the years, two strands of thought on Sustainable Development (SD) have emerged, often identified as ecologism and environmentalism, respectively. This paper suggests that there exists a third rhetorically excluded option, namely large-scale industrial expansion into space. Access to raw materials found on the Moon as well as unfiltered solar energy would dramatically increase the stock of ...


    By Inderscience Publishers

  • Success Story: 1 Million Sunny Boy TL Inverters Sold Worldwide

    SMA has been making and selling PV inverters for over 30 years. But no product has been installed as often as the Sunny Boy TL: launched in 2008, the one-millionth unit from this product family was sold in June 2015. As a result, the Sunny Boy is the bestselling inverter of its class worldwide. Its total installed output – more than four gigawatts – is enough to replace four typical ...


    By SMA Solar Technology AG

  • Performance of grid connected inverter with maximum power point tracker and power factor control

    Detailed analysis, simulation and hardware results of grid connected inverter with maximum power point tracker and power factor control in Malaysian climate are presented. A six-switch topology inverter with symmetrical pulse width modulation (PWM) switching technique is used. A low-pass filter is incorporated in the circuit to filter out unwanted harmonics and produce a sinusoidal AC current. ...


    By Inderscience Publishers

  • Large-scale PV power plants : Maintenance Pays Off

    Large-scale PV power plants are an investment in the future. Careful planning and SMA technology perfectly adapted to operator needs ensure that every plant is profitable and produces high yields. Regular maintenance is necessary to guarantee all plant components run safely and optimally, long term. They prevent smaller and larger defects from being overlooked and thus exert a considerable ...


    By SMA Solar Technology AG

  • Classification and comparison of interfacing schemes for connecting fuel cells to a single-phase utility line

    Based on a systematic classification of dc source to utility interfacing schemes, this paper presents six major interfacing schemes for connecting fuel cells to a single-phase utility line using high-frequency transformer isolated power converters. The operation, advantages and disadvantages are discussed for each scheme with examples and operating waveforms. Several features e.g., utility line ...


    By Inderscience Publishers

  • Evolution of integrated solid waste management systems enhanced with municipal utilities and green energy production

    Much has changed over the past 40 years in the advancement of solid waste management. Early solid waste drivers focused on the top-down tiered approach promoted by EPA, which embraced a hierarchy of integrated waste management practices. These practices promote the following methods (in order of preference) to reduce, reuse, recycle and recover value from municipal wastes: Source reduction and ...


    By Waste Advantage Magazine

  • The potential role of ‘Candidatus Microthrix parvicella’ in phosphorus removal during sludge bulking in two full-scale enhanced biological phosphorus removal plants

    We investigated the bacterial community compositions and phosphorus removal performance under sludge bulking and non-bulking conditions in two biological wastewater treatment systems (conventional A2/O (anaerobic/anoxic/aerobic) and inverted A2/O (anoxic/anaerobic/aerobic) processes) receiving the same raw wastewater. Sludge bulking resulted in significant shift in bacterial ...


    By IWA Publishing

  • University of California San Diego San Diego, California

    “The benefits of this type of sweeping project are far-reaching and long-lasting, and Borrego is proud to take part in this monumental effort by installing a solar energy system that will ensure the consistent production of renewable energy for years to come.” Aaron Hall, CEO of Borrego Solar Systems, Inc. Unique Feature: The Solar Trees™ serve as a solar parking ...


    By Kyocera Solar, Inc.

  • A novel feed-forward and feed-back control of a VSI for variable speed wind-driven PM alternators

    This paper brings out an improved control strategy for an inverter employed to integrate a 3-kW wind-driven permanent-magnet synchronous generator (PMSG) to the utility network. The proposed controller features a feed-back control for enhanced current tracking performance and a feed-forward control for power tracking with varying wind-speeds. The harmonic content of the current fed to the grid is ...


    By Inderscience Publishers

  • Frito-Lay, Arizona Service Center Phoenix, Arizona

    “Frito-Lay's use of PV power systems on their facilities demonstrates solar power is a viable means to meet the energy resources needed to run a large-scale business while addressing environmental issues.” Sean Seitz, American Solar Electric, Inc. Unique Feature: Real-time monitoring on the internet with SMA Web Box. Unique Fact: The Largest ...


    By Kyocera Solar, Inc.

  • Fuel cell–based distributed generation system with power flow and power quality control

    This paper presents the modelling and control of fuel cell–based distributed generation system with embedded active filter functioning. It includes the modelling of proton electrolyte membrane fuel cell and the power conditioning unit interfacing the fuel cell to the utility grid with proper power flow control. The output of the fuel cell stack is given to the DC–DC boost converter ...


    By Inderscience Publishers

  • PV Balance of Systems holds the key to grid parity in the US

    PV Insider reveals the importance of Balance of Systems (BoS) for lowering LCOE and maximizing performance in 2012 In 2011 the solar PV industry in the United States installed 1.86GW of photovoltaic systems and is expected to install a full gigawatt more in 2012, totalling a massive 2.8GW. Simultaneously, prices have also continued to decline since 2009. Average module prices have fallen nearly ...


    By FCBI Energy

  • Modelling and control of a variable speed wind turbine driving doubly fed induction generator using three–level PWM converter

    The aim of this researcher is to develop a complete wind central model driven doubly fed induction generator (DFIG) which feeds an AC power grid. For that, two–pulse width modulated (PWM) voltage converters are connected back to back between the rotor terminals of DFIG and the utility grid via a common DC link, in there, our contribution will appear in the utilisation of three levels voltage ...


    By Inderscience Publishers

  • Sanborn New York Solar Installation Case Study

    Project Overview: Patriot Solar Group worked in assistance with the homeowner for his first solar array installation at his home in New York State. The 12 kW array is consists of 48 Sonali Solar panels making it the perfect size for a residential customer. The ease of installation for residential customers makes the post driven ground mount a great and simple solar solution. Utilizing start and ...


    By Patriot Solar Group

  • Brooksville Florida Solar Installation Case Study

    Patriot Solar Group worked with a residential customer in Brooksville Florida to create a post driven ground mount system that may be susceptible to high wind conditions during tornado and hurricane seasons. Patriot Solar Group supplied everything from racking, to panels, inverters and all balance of systems (BOS), including combiner boxes, grounding applications, and lightning arrestors. The 28 ...


    By Patriot Solar Group

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