August 2021

adds a senior C-Power r&d electrical engineer, Joe Prudell. “This is extremely challenging.” C-Power turned to another US company called Vicor Power Systems which specialises in high-performance power modules with high efficiencies and power densities. Vicor was able to provide fixed- ratio bus converters and regulator modules with complex multi-stage discrete converters that convert the unpredictable wave energy efficiently into controlled output power from the SeaRay. The wide-input DC-DC converters help to convert the pulsed wave power inputs into a varying DC bus, while producing a constant current at various power levels. In addition, the power conversion topologies help to minimise electromagnetic interference and noise onboard the SeaRay that might otherwise affect the accuracy of sensor measurements. The conversion technology has enabled C-Power to raise the SeaRay’s efficiency from around 50% to 85–94%. “There are plenty of companies trying to capture and convert wave energy, but it’s another thing to do something in a small, compact form factor and still satisfy what customers need from an operational and logistics perspective,” Lesemann points out. “That’s where we, with Vicor’s assistance, have been able to stick our chins out so much further than everyone else.” C-Power believes it has opened the door to new applications by developing an autonomous, environmentally friendly, ocean-borne power source that can double as a communications conduit. n RENEWABLE ENERGY n The SeaRay can power loads located underwater or on the surface of the ocean, and transmit data from them to onshore receivers or satellites With over 38 years of specializing in the manufacturing of Soft Starters and Motor Protection Products, Motortronics is a world-wide leader. Having shipped millions of soft starters and controllers to virtually all industries around the world, we have amassed more real-world experience than any other manufacturer. Founded in 1982, Motortronics was born out of innovation. We were the first company in the world to produce a 3-phase energy saving soft starter and have not stopped innovating since. Motortronics manufactures one of the broadest ranges of product available on the market today. Low voltage controls range from 200VAC to 600VAC at 3 phase 2000HP (up to 1500kW) and medium voltage soft starters range from 2300V to 15kV at 200amp - 15000HP (up to 12,000kW). In addition to having a complete line of Soft Starters, Motortronics also manufactures Current Transformers, Motor Winding Heaters and Motor Protection Relays. As a world leader specialising in the manufacturing of Soft Starters, AC Motor Controls and Motor Protection products, Motortronics’ has extensive experience in collaborating with multinational teams and working to international standards. Our strong engineering capabilities, manufacturing excellence and quality control have provided the foundation for the long term and successful relationships we have with all of our customers. Our customers have come to rely on Motortronics for dependable solutions to their motor starting needs. Soft Starter Specialists Worldwide leader in low & medium voltage soft starters, motor control, monitoring & protection t: 01752 894554 www.motortronics-uk.co.uk