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hsklkk
Joined: 29 Jun 2008
Posts: 10
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 29 Jun 2008 5:57 DC-DC converter for EV (new question) |
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I am a Electrical Engineering student. I am going to do the final year project about EV DC-DC converter. The details are as follows:
Step up from battery(48-96V) to (200V) DC motor for driving the electric vehicle.
Initial: try from 48v to200v for 1kw,then 96v to 200v (4kw)
Any circuit can you suggest?
any reference, paper or resource that I can find in web?
Thanks for any experts!
Last edited by hsklkk on 02 Jul 2008 17:30; edited 1 time in total |
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FvM
Joined: 22 Jan 2008
Posts: 2315
Helped: 385
Location: Bochum, Germany
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| 29 Jun 2008 8:41 Re: DC-DC converter for EV (experts please help me) |
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A conventional push-pull converter with a transformer should be always considered, particularly for unregulated design. Step-up converter would have higher current ripple at in- and output but minimum part count. A resonant converter (e. g. ZCS) would give lower switching losses.
If bidirectional energy flow is intended (electrical braking), it should be specified.
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hsklkk
Joined: 29 Jun 2008
Posts: 10
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| 29 Jun 2008 17:29 Re: DC-DC converter for EV (experts please help me) |
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| thank for yr help. Any more details? how about Full-bridge? where can i find the reference such as website?
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FvM
Joined: 22 Jan 2008
Posts: 2315
Helped: 385
Location: Bochum, Germany
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| 29 Jun 2008 19:40 Re: DC-DC converter for EV (experts please help me) |
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Regarding inverter operation, I would regard full bridge as a full bridge variant. But it has some advantages as suppression of voltage spikes from transformer leak inductance.
A lot of interesting power converter circuits can be found around a design challenge mentioned in this thread: http://www.edaboard.com/viewtopic.php?t=90560. Although most circuits are DC/AC (inverter type), they may be useful also for a tranformer based DC/DC converter.
Also some power converter Ebooks are present at EDAboard, but I fear the Ebooks forum is hidden at your present member level.
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hsklkk
Joined: 29 Jun 2008
Posts: 10
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| 30 Jun 2008 18:34 Re: DC-DC converter for EV (experts please help me) |
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thanks for your help, if anyone can give me more information I would be very happy! need bi-directinal or soft switching?
Added after 53 minutes:
also, what is the common problem of this project? noise?efficiency? please list all major problem and solution. Thanks any experts!
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hsklkk
Joined: 29 Jun 2008
Posts: 10
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| 02 Jul 2008 17:31 DC-DC converter for EV (new question) |
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| anyone helps me ?,please, experts
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