Re: Charging inductors for resonant charging

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Bert Hickman <bert.hickman-at-aquila-dot-net> 

Hmmm... you're right! I suppose that's why it sounded too easy!  :^)

For a DC resonant charging system there appears to be no avoiding the need 
for an air gap in the inductor's magnetic circuit. However, if the core of 
a moderately sized DT could be cut to introduce an air gap, then this 
approach might still have some merit. The approach would provide high BIL 
and current handling and a means to external adjust the charging inductance 
without resorting to a custom wound inductor. Now, the challenge becomes 
how to cleanly cut the core of one of these beasts.

-- Bert --

Tesla list wrote:

>Original poster: "gtyler" <gtyler-at-drummond-dot-org.za>
>Are you not using this choke on DC? If so the transformer will saturate.
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Sunday, February 01, 2004 2:57 AM
>Subject: Re: Charging inductors for resonant charging
>
>  > Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
>  >
>  > Very, very clever... I like it!
>  > One could make a very sophsticated system if one wanted, and you'd be
>  > working at "reasonable" voltages
>  > ----- Original Message -----
>  > From: "Tesla list" <tesla-at-pupman-dot-com>
>  > To: <tesla-at-pupman-dot-com>
>  > Sent: Saturday, January 31, 2004 10:25 AM
>  > Subject: Re: Charging inductors for resonant charging
>  >
>  >
>  >  > Original poster: Bert Hickman <bert.hickman-at-aquila-dot-net>
>  >  >
>  >  > Ed, Jim and all,
>  >  >
>  >  > Here's an idea I was kicking around with Ed Wingate a while back.
>You
>  > could
>  >  > simply use another distribution transformer and ballast as a HV
>charging
>  >  > inductor. Use the HV winding in series as the charging inductor.
>Connect
>  >  > the low voltage side of the DT to high current ballast (welder or
>  >  > adjustable high current inductive ballast). The DT will multiply
>the LV
>  >  > side ballast inductance by its turns ratio squared, easily making
>the HV
>  >  > side look like a large, adjustable, HV inductor. And a properly
>sized DT
>  >  > already has the necessary BIL and current rating required.
>  >  >
>  >  > By selecting the proper distribution transformer and ballast, you
>should
>  > be
>  >  > able to get almost infinite flexibility with without the need to
>resort to
>  >  > a custom HV choke.
>  >  >
>  >  > Best regards,
>  >  >
>  >  > -- Bert --
>  >  > --
>