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Hi All,
For those who don't know, I'm working on an electric race bike destined to compete with Ripperton's machine this June. All of the 12 V auxiliary stuff is to be powered from a 12 V battery, and this battery is to be recharged between races. It will work for now, but later on I was thinking of getting a DC/DC converter to keep the auxiliary battery topped up.
Here's the problem - the DC bus of my battery pack is 700 V when fully charged. I have isolating contactors which can break the pack up into four equal parts using a half pack contactor and two quarter-pack contactors.
So when I charge the pack, I use two 350 V max chargers and charge the bike as two half packs - no centre tap.
My question to the DIY EV crowd - what is your experience with running the likes of Vicor DC/DC converters with the inputs in series? I understand that a centre-tap is desired, but is it necessary?
If a 700 V capable DC/DC converter existed I would gladly use it. Anyone know how to build one?
Thanks in advance,
Chris
For those who don't know, I'm working on an electric race bike destined to compete with Ripperton's machine this June. All of the 12 V auxiliary stuff is to be powered from a 12 V battery, and this battery is to be recharged between races. It will work for now, but later on I was thinking of getting a DC/DC converter to keep the auxiliary battery topped up.
Here's the problem - the DC bus of my battery pack is 700 V when fully charged. I have isolating contactors which can break the pack up into four equal parts using a half pack contactor and two quarter-pack contactors.
So when I charge the pack, I use two 350 V max chargers and charge the bike as two half packs - no centre tap.
My question to the DIY EV crowd - what is your experience with running the likes of Vicor DC/DC converters with the inputs in series? I understand that a centre-tap is desired, but is it necessary?
If a 700 V capable DC/DC converter existed I would gladly use it. Anyone know how to build one?
Thanks in advance,
Chris