ees 2019
21 September 2018 2018 11:33 AM GMT

Ingeteam Develops New Optimal Offshore Power Conversion Architecture

Ingeteam, an independent global supplier of electrical conversion and turbine control equipment, has announced that a recent in-house R&D study allowed them to work out the optimal electrical power conversion designs for offshore wind turbines up to 15 MW. The research, taking into account the complex set of parameters at play in Levelized Cost of Energy (LCoE), enabled the company to develop a Medium Voltage Power Converter based on the parallelisation of several conversion lines (core product) reaching up to the 15 MW power range. Ingeteam claims that its new design is the ideal solution for scaling up offshore turbine platforms and will present its converter and the associated research at the Global Wind Summit in Hamburg next month.

Ingeteam’s R&D study assessed the complex relationship between the cost of the power conversion stage and its reliability and maintainability metrics (MTBF and MTTR respectively[1]) to determine the lowest LCoE. Based on the study findings, Ingeteam found that the optimal solution for the offshore wind market is a Medium Voltage Power Converter based on the parallelization of several conversion lines (core product) reaching up to the 15 MW power range. The power conversion line designed by Ingeteam offers the best investment/availability ratio, with efficient operation, easy maintenance and improved reliability.

“With current technologies, as well as the expected progress in materials and engineering integration, we think that offshore wind turbines will continue to rapidly increase their power capacity. Therefore, a robust medium voltage power converter has been developed focusing on a market that demands a low Levelized Cost of Energy (LCoE) without compromising quality or performance in wind turbine platforms that are continuously scaling up”, commented Ana Goyen, Director of Ingeteam Wind Energy.

The company’s new core product is capable of reaching the 15 MW power range and has been conceived considering the modularity of the system as a key feature. It, therefore, allows multiple solutions depending on customer requirements regarding the integration in the wind turbine. The design of the converter offers maintenance friendly characteristics with front access and withdrawable main components that directly contribute to minimizing the OPEX related to the service of the wind turbine.

This medium voltage converter has been specially designed for the offshore market with a fully enclosed cabinet and a liquid cooling system that guarantees the safe operation of the converter even in harsh environments. With efficiencies higher than >98% at rated operating conditions, the proposed solution contributes significantly to minimize the production losses of the wind turbine.

Ingeteam has developed the control algorithms of its full power converters to guarantee the fulfilment of the most demanding grid codes, such as, German EON-2006 and Indian CERC-CEA. Additionally, country-specific power quality requirements are fulfilled by applying advanced modulation strategies. Ingeteam’s medium voltage converter solution is able to control the torque of different types of generators (IG, PMG or EESG) with the highest performance dynamics but always remaining within winding and bearing limits. Finally, the control algorithms can be adapted to operate with single and multiphase stator generators in order to optimize the whole wind turbine solution.

[1] The availability depends on two metrics: Mean Time Between Failures (MTBF) and Mean Time Between Repair (MTTR). It grows with higher values of MTBF and lower values of MTTR. But there is also a direct relationship with costs as higher investments allow better materials or even the additions of redundancies, more advanced tools and optimal maintenance programmes.

March 29th 2019
Arsenal Unveil Battery Storage System: First Of Its Kind At A UK Football Club

Arsenal Football Club has unveiled a battery storage system (BSS) to store enough energy to run the 60,000 seater Emirates Stadium from kick-off to full time. It follows a unique collaboration with Pivot Power to install a 2MW/2.5MWh lithium ion BSS, with funds managed by Downing LLP. The project, the first of its kind in the UK, will also save club money as it works to support low-carbon plans. The BSS allows Arsenal to avoid peak power prices, buying electricity when it is cheap and storing it for use when prices are high. Typically, energy can cost three times more at peak times than overnight. The installation maintains Arsenal as the leader in sustainability in sport following its commitment to clean energy with Octopus Energy in 2016.

March 30th 2019
Battery Boom: Wind And Solar Can Generate Half Of Worldwide Electricity By 2050

Coal is to shrink to just 11% of global electricity generation by mid-century, from 38% now, as costs shift heavily in favour of wind, solar and batteries. Wind and solar are set to surge to almost “50 by 50” – 50% of world generation by 2050 due to reductions in cost. “Cheap battery storage means that it becomes increasingly possible to finesse the delivery of electricity from wind and solar so that these technologies can help meet demand even when the wind isn’t blowing and the sun isn’t shining. The result will be renewables eating up more and more of the existing market for coal, gas and nuclear.”

March 30th 2019
EU Approves Ambitious Energy Efficiency Goals, Encourages Clean Energy Feed-In

Europeans will now be entitled to consume, store and sell the renewable energy they produce in line with ambitious targets set by the EU. The targets are to be reviewed by 2023, and can only be raised, not lowered. By making energy more efficient, Europeans will see their energy bills reduced. In addition, Europe will reduce its reliance on external suppliers of oil and gas, improve local air quality and protect the climate. For the first time, member states will also be obliged to establish specific energy efficiency measures to the benefit of those affected by energy poverty. Member states must also ensure that citizens are entitled to generate renewable energy for their own consumption, to store it and to sell excess production.

March 29th 2019
Wind: China Maintains Emerging Markets Top Spot Following 19.7GW Build Boom

Wind industry intelligence service A Word About Wind has launched its Emerging Markets Attractiveness Index report for 2018, which provides insight and analysis into the most attractive emerging markets for wind companies. The index, now in its second year, ranks the top 30 emerging markets that investors should consider when investing in wind in Europe, Africa, Asia and Latin America. The list considers factors including political and economic stability for investors, alongside the growth of electricity demand and potential for wind growth, in order to rank the countries by overall potential. As with last year’s report, China tops the list and the ongoing trade war with the US shows no sign of slowing China’s formidable growth.

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