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NiHaoMike · 02-12-2010, 05:50 PM

What topology does it use? Dual switch forward? Full bridge? Something else?

I think 90A is a bit overkill for a well-designed EV, unless you're going to run something like the A/C. Even then, it's better to design it to directly run those from the main pack.

I'm working on a power supply that converts 340v DC (voltage doubled 120v AC) to 12-15v DC at up to 35A for IT use. I'm planning for a minimum of 80% efficiency at half load. The standby power usage is currently only 1/8w and I'm planning for less than 1w idle power usage. It will have a control interface that will allow a BMS/PMS (Battery/Power Management System) to control its output voltage and current limit as well as turn it on and off and monitor temperature and output current. (It will default to outputting about 14.4v at maximum current limit if the control connector is disconnected.)

It could be used in an EV if the nominal pack voltage is 240-288v. By changing the transformer turn ratio and using different primary inverter components, it can be redesigned for just about any practical input voltage.

02-12-2010, 05:50 PM	#3 (permalink)
NiHaoMike Master EcoModder Join Date: Sep 2008 Location: Texas Posts: 632 Thanks: 0 Thanked 26 Times in 24 Posts	What topology does it use? Dual switch forward? Full bridge? Something else? I think 90A is a bit overkill for a well-designed EV, unless you're going to run something like the A/C. Even then, it's better to design it to directly run those from the main pack. I'm working on a power supply that converts 340v DC (voltage doubled 120v AC) to 12-15v DC at up to 35A for IT use. I'm planning for a minimum of 80% efficiency at half load. The standby power usage is currently only 1/8w and I'm planning for less than 1w idle power usage. It will have a control interface that will allow a BMS/PMS (Battery/Power Management System) to control its output voltage and current limit as well as turn it on and off and monitor temperature and output current. (It will default to outputting about 14.4v at maximum current limit if the control connector is disconnected.) It could be used in an EV if the nominal pack voltage is 240-288v. By changing the transformer turn ratio and using different primary inverter components, it can be redesigned for just about any practical input voltage. __________________ If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler... Allie Moore and I have a combined carbon footprint much smaller than that of one average American...