Harvesting Free Power from High Speed Electrical Machines Edition 3: Page 5-6 Diesel Generators Enabling the Solar Revolution Page 7-8 Grid Stability Supported by STAMFORD and AvK AC Generators Page 13-14 Thinking it Through Chris Whitworth Biography

1 generating insight | edition 3 Foreword Welcome to the 3rd edition of Cummins Generator Technologies’ ‘Insight’ magazine which once again focuses on our products, customers and the industry we serve. We all know fossil fuels are a ‘finite’ resource and ultimately we’ll have to learn to live with their long-term decline; in fact the era of cheap oil is now widely accepted as past. So technologies that can help minimise our reliance upon fossil fuels will play a key role in maintaining our living standards and providing power around the world. Just as climate change has become an increasingly...

2 generating insight | edition 3 Quick Response Helps Fletcher Shipping Stay Competitive When offshore supply experts Fletcher Shipping Ltd suffered unexpected downtime with their vessel, they turned to Cummins Generator Technologies and the STAMFORD brand to get sailing again. Working in one of the world’s most challenging marine environments, Fletcher Shipping provides flexible services to the offshore supply sector. Led by a management team with vast experience, Fletcher Shipping focus their service on quick response times to effectively meet the needs of customers. Their primary ship, the...

generating insight | edition 3 Fighting Back to Protect our Reputations According to the International Chamber of Commerce, by 2015 the value of counterfeit goods globally could exceed $1.7 trillion. We look at how Cummins Generator Technologies is fighting back against the counterfeiters. Imitation, so they say, is the sincerest form of flattery. But when that imitation becomes a deliberate copy, that’s then passed off as the genuine article, it’s not flattery, it’s illegal. Like many global equipment manufacturers Cummins Generator Technologies is only too aware of the problems posed by counterfeiters,...

NG COUN TERFEIT W ARNIN generating insight | edition 3 Another important measure was to stamp the recognised STAMFORD trade mark name onto the generator terminal box casing. This offers the customer protection by identifying the alternator as a genuine Cummins Generator Technologies’ product rather than a counterfeit copy that may be passed off as an original and because STAMFORD is a registered trade mark, it becomes easier to take legal action against the counterfeiters. Cummins Generator Technologies customers can take action now if they are worried that their generator might not be the real...

5 generating insight | edition 3 Diesel Generators Enabling the Solar RevolutionTo Good Vibrations Power Electronics Technology Leader, Krzysztof Paciura looks at the growing trend towards mixing and matching ‘renewable’ power sources with proven generator-setbased systems. In 2011 more than 47 gigawatts worth of new diesel generators were sold worldwide, 24% up from 38GW only a year before. These figures reflect the increasing demand for electrical power and indicate that this power is not readily available from public grids. In developing countries there are very many communities and businesses...

6 generating insight | edition 3 In 2011 more than 47 gigawatts worth of new diesel generators were sold worldwide, 24% up from 38GW only a year before. of the diesel master unit(s). Generating-sets already deal with a highly variable load demand in remote community systems, and also have their own operating constraints for safe and reliable operation. This creates significant challenges for the generatingsets which act as grid-forming (master) units to balance power and regulate voltage and frequency. Generatingsets typically operate under minimum load constraints that keep operation and maintenance...

7 generating insight | edition 3 Grid Stability Supported by and AC Generators World electricity demand is on course to double from 2000 to 2030, as predicted by the International Atomic Energy Agency. Traditionally global electricity has been generated by large thermal power stations, supplemented by numerous large hydro and solar installations utilising natural resources. In recent years, due to technological advancements and a shift in environmental policies, small scale distributed power generating stations have started to emerge. Distributed generation is commonly defined as a collection...

8 generating insight | edition 3 Japan hosted a Smart Grid Conference in Tokyo from February 27th to March 3rd 2013 to discuss and promote smart grid implementations. The implementation of the smart grid concept leads to fundamental changes to the structure of the electricity industry. Traditional grid networks were structured to handle the flow of electricity in one direction. Future generation of transmission and distribution infrastructures and grid codes need to be equipped to accept and handle possible bi-directional flows of energy, allowing for distributed power generation, such as from...

9 generating insight | edition 3 Harvesting Free Power from High Speed Electrical Machines Many governments have developed legislation to try and reduce our dependency on fossil fuels like petrol, diesel, oil, coal and natural gas, in an attempt to try and offset the human contribution to global warming. Evidence of these initiatives may be seen in our everyday lives in the form of wind turbines and solar panels. While many governments have aggressive targets to reduce our dependency on fossil fuel the sheer scale of the energy challenge is much larger than most people realise requiring many...

10 generating insight | edition 3 ORC can be explained by considering your kettle at home; heat is applied to the water that changes state to steam, and this steam could then be used to drive a turbine generator to produce electrical energy. In engine WHR, the high speed electrical machine is used as a generator to recover engine waste-heat via an Organic Rankine Cycle (ORC). ORC can be explained by considering your kettle at home; heat is applied to the water that changes state to steam, and this steam could then be used to drive a turbine generator to produce electrical energy. Modern ORC systems...