PMM2000M brings highest torque capacity to new marine vessels

Early 2023 will see the first deliveries of our largest permanent magnet (PM) shaft generators to shipyards. Purpose-built for the shipping giants of the sea, the PMM2000M brings maximized torque capacity with the lowest mass and inertia to fulfill the power production needs of the very largest cargo vessels – and at the same time…

5 reasons to choose The Switch DC-Hub for your next marine project

With future marine fuels as yet undecided and the looming pressure of IMO-mandated emissions deadlines, vessel designers and owners need good options. The Switch DC-Hub is a multi-source, multi-load DC system based on standardized power drive units. It offers a wide choice of power generation, energy storage, charging, propulsion power and clean power options for…

Cooling options for high-speed solid rotor machines

Did you know you can choose from a variety of effective cooling systems for our high-speed solid rotor electrical machines? Solid rotor machines are a superb option for high-speed applications because they are robust, efficient and reliable. But because high-speed machines are characterized by high power density, even with the highest efficiency the loss density…

Technical notes for swift and accurate system integration

System integrators face many more complex requirements and challenges with today’s increasingly versatile and comprehensive systems for propulsion and the production of onboard electricity. As a result, system integration must now start much earlier. This means information on system components must be available earlier, especially in the case of unfamiliar new technologies and solutions that…

New marine DC protection technology causes buzz at E&H marine expo

A record number of attendees and exhibitors came together last month at the Electric & Hybrid Marine Expo in Amsterdam to discuss the future of the marine industry. What a relief to be able to network face-to-face after the hiatus of the past few years! We were glad to have the chance to exchange information and catch up on important developments in person.

How will turbo fit into future energy solutions?

We just got back from the ASME Turbo Expo and Conference in Rotterdam where many were asking how turbo will fit into future energy solutions.

Everyone in the industry seems to be waiting, hesitating to move forward until it’s known which renewable or green gas will best address climate change – and how compressor and turbine applications will need to adapt to handle the new situation. Yet everyone must be ready to move once decisions are made.

Extending the power and speed capabilities of standard induction electric motors

Markus Silventoinen The Switch solid-rotor technology extends the speed capabilities of standard induction electric motors, filling the existing gap for applications running below multi-megawatt powers. Typically, standard 2-pole induction motors reach speeds of 3,000–3,600 rpm and with a variable frequency drive (VFD), can reach speeds up to 4,500 rpm. In high-speed applications, a high-speed gearbox…

Testing verifies safety of permanent magnet shaft generators

Jussi Puranen Safety is one of the biggest worries for shipowners and operators unfamiliar with PM technology. They want to know they’re protected from fault currents even when the magnetic field cannot be switched off. We at Yaskawa Environmental Energy / The Switch take all kinds of safety issues very seriously and have thoroughly examined…

Dimensioning the shaft line for a shaft generator or propulsion motor

Patrik Holm If you’re considering a shaft generator or propulsion motor for your vessel design, you already know you’ll be saving on fuel consumption, improving efficiency, and complying with the current EEDI and EEXI emission limits. With an electric machine on the shaft line, we face new considerations in shaft line dimensioning. The bearings in…

New test center verifies large marine electrical drives

Panu Kurronen Marine engineers, investors and builders are in a tight spot these days. There’s the pinch of approaching regulation deadlines and the stress of using new technology rather than familiar, well-tried equipment. We understand. Change is costly and stressful. We’ve been exploring and expanding PM machine technology for two decades, first for wind power…

Solving marine DC distribution, selectivity, redundancy and safety issues

Teemu Heikkilä The marine industry is evolving rapidly to meet 2023 IMO-mandated emissions deadlines – and the ones to follow. To accomplish this, long-established methods and equipment are being reevaluated, upgraded or replaced. Making DC distribution the best choice for marine use Power distribution is a promising area for vessel efficiency gains. Although AC distribution…