T-MAR Industries Ltd. introduces their New: 7280E Hybrid Electric Drive Yarder https://www.nanaimobulletin.com/new...-first-hybrid-electric-logging-yarder-8195909 Video included in the news article https://www.ctvnews.ca/vancouver/ar...creates-first-hybrid-electric-logging-yarder/ Lots of YouTube videos the Yarder
Where's the big spool of SO cord pulled by a D-9 like on Big Muski ?
Watch the news link video from CTV. It explains the principal on how it works. No SO cord to be pulled by a D9.
I don't see mention of any batteries for short term storage.
Doesn’t use backup batteries for short term use. Best I can find to explain! The 7280E yarder is powered by a John Deere 6090H diesel engine. This engine is a 6-cylinder, turbocharged unit that provides the necessary power to drive the five electric motors, contributing to the yarder's overall efficiency and performance. The combination of this diesel engine with the hybrid electric system allows for improved fuel efficiency and reduced emissions compared to traditional yarders.
So why call it a Hybrid ? for what i see, it's simply an electric drive, much like a locomotive, or off hiway truck.
cool buzzwords Doug, unless some energy is recouped somewhere. Like you, I see no hybrid without a battery to take advantage of something similar to the braking regeneration on a car. @LACHAU posted those hybrid excavators that did that with the counter swing, and that was pretty nifty.
Yup, they forgot to add into the name: 1. "Eco" 2. "Green" 3. "Carbon Offsetting"
The 7280E uses sixteen Eaton supercapacitor modules for energy storage. The 14L Detroit 60 Series is mated to the original 7280 pump box, with a BorgWarner motor/generator unit driven in the position where the winch torque converter is normally installed. The winch drums are each driven by a custom two-stage gearbox with a helical input stage and a planetary output stage. The haulback and main drums use two motor/generator units on the input stage, and the slackpuller uses one unit. The line tension for grapple yarding is created by power generation. When the load is being pulled into the landing the main drum units are acting as motors, pulling in line, while the haulback units are acting as generators, creating line tension to elevate the rigging and feeding power directly back to the capacitor bank that is powering the main drum motors. During outhaul this sequence is reversed. The engine-driven generator provides the energy to make up the difference and keep the capacitors charged. In downhill yarding where the grapple and rigging is going up empty and coming down loaded the power required from the engine-driven generator will be greatly reduced, as the capacitors will be charged by the braking of each turn.
I sit corrected thank you.
RG LeTourneau will be looking down with a grin from ear to ear. Couldn't get any better approval than that
Looking forward to see the yarder in field test! Visited you in Campbell River last year and got an impressive presentation of the yarder. Hi torque at low speeds and huge speed range more or less eliminating the need for efficiency reducing gear drives, and regenerating possibilities as well, makes electric drive on yarder drums a promising project. The Norwegian hydrostatic yarder manufacturer Owren was evaluating electric drive on their last build in 2016, but found the development of new technology to be too challenging, but also the very high cost of the electric components made the project unrealistic for them.
????
Understandable - component availability has evolved a lot over almost 10 years. Even so we had to develop the winch drives in-house (using motors configured for us), work out all of the lubrication, cooling, power management, invest in the cable-making gear, software and so-on. The R&D began during covid, to give you an idea of the challenge this presented. As I see it, there's a certain size/kw, below which hydraulics make more sense and above where mechanical or electric does. The latter is our specialty and we're in a time where mechanical powertrain is giving way to electric due to simplicity, durability and, most importantly, power. Of course Robert LeTourneau understood this 75 years ago. We have far more powerful motors now though -Tyson