> Winfield Hill wrote...
>>
>> Tom Del Rosso wrote...
>>>
>>> Winfield Hill wrote:
>>>> Jasen Betts wrote...
>>>>>
>>>>> On 2018-06-09, chetan wrote:
>>>>>>
>>>>>> I need to design nonisolated dc-dc bidirectional converter
>>>>>> for dc nano gride system. i am not sure how to draw in
>>>>>> ltspice or in Matlab. please help me out.
>>>>>
>>>>> Do you mean that energy can flow in both directions?
>>>>
>>>> Fully synchronous buck or boost converters are bi-directional.
>>>> Current flows to maintain an in/out voltage ratio, set by the
>>>> duty cycle of the two switch system. (Synchronous converters
>>>> use switches instead of diodes.) For example, you can equalize
>>>> the charge state between a 12V and a 42V battery. I like to
>>>> call them bus converters. The nano-grid concept appears to be
>>>> house-wide systems replacing the traditional AC power lines.
>>>> They assume energy sources in your home. I have 8.5kW solar-
>>>> panel on my roof to feed my house-hold use, with the extra
>>>> going to the grid. But it works using conventional AC lines.
>>>
>>> BTW I wasn't just kidding when I asked "what page." This
>>> doesn't sound familiar.
>>
>> I'm not sure it's mentioned in AoE III, and the x-Chapters,
>> which are almost finished, may not explicitly discus it.
>> But it's certainly implied. For example, with zero load
>> current, and in voltage equilibrium, there's still a high
>> inductor current flowing back and forth each cycle, with
>> an average value of zero.
>
> I found a draft writeup from seven years ago, but I'm
> not sure if it's progressed further, I'll check at home.
> https://www.dropbox.com/s/fykemyom9phtq5g/Bus-Converter_PWR-671_DC-transformer_draft.pdf?dl=0
Thanks that is something I never saw anywhere.
Do you mean it's implied in the X-Chapters but not the main book or the
2nd Ed?
Reply by Winfield Hill●June 13, 20182018-06-13
Winfield Hill wrote...
>
>Tom Del Rosso wrote...
>>
>>Winfield Hill wrote:
>>> Jasen Betts wrote...
>>>>
>>>> On 2018-06-09, chetan wrote:
>>>>>
>>>>> I need to design nonisolated dc-dc bidirectional converter
>>>>> for dc nano gride system. i am not sure how to draw in
>>>>> ltspice or in Matlab. please help me out.
>>>>
>>>> Do you mean that energy can flow in both directions?
>>>
>>> Fully synchronous buck or boost converters are bi-directional.
>>> Current flows to maintain an in/out voltage ratio, set by the
>>> duty cycle of the two switch system. (Synchronous converters
>>> use switches instead of diodes.) For example, you can equalize
>>> the charge state between a 12V and a 42V battery. I like to
>>> call them bus converters. The nano-grid concept appears to be
>>> house-wide systems replacing the traditional AC power lines.
>>> They assume energy sources in your home. I have 8.5kW solar-
>>> panel on my roof to feed my house-hold use, with the extra
>>> going to the grid. But it works using conventional AC lines.
>>
>> BTW I wasn't just kidding when I asked "what page." This
>> doesn't sound familiar.
>
> I'm not sure it's mentioned in AoE III, and the x-Chapters,
> which are almost finished, may not explicitly discus it.
> But it's certainly implied. For example, with zero load
> current, and in voltage equilibrium, there's still a high
> inductor current flowing back and forth each cycle, with
> an average value of zero.
>
>Winfield Hill wrote:
>> Jasen Betts wrote...
>>>
>>> On 2018-06-09, chetan wrote:
>>>>
>>>> I need to design nonisolated dc-dc bidirectional converter
>>>> for dc nano gride system. i am not sure how to draw in
>>>> ltspice or in Matlab. please help me out.
>>>
>>> Do you mean that energy can flow in both directions?
>>
>> Fully synchronous buck or boost converters are bi-directional.
>> Current flows to maintain an in/out voltage ratio, set by the
>> duty cycle of the two switch system. (Synchronous converters
>> use switches instead of diodes.) For example, you can equalize
>> the charge state between a 12V and a 42V battery. I like to
>> call them bus converters. The nano-grid concept appears to be
>> house-wide systems replacing the traditional AC power lines.
>> They assume energy sources in your home. I have 8.5kW solar-
>> panel on my roof to feed my house-hold use, with the extra
>> going to the grid. But it works using conventional AC lines.
>
> BTW I wasn't just kidding when I asked "what page." This
> doesn't sound familiar.
I'm not sure it's mentioned in AoE III, and the x-Chapters,
which are almost finished, may not explicitly discus it.
But it's certainly implied. For example, with zero load
current, and in voltage equilibrium, there's still a high
inductor current flowing back and forth each cycle, with
an average value of zero.
--
Thanks,
- Win
Reply by ●June 12, 20182018-06-12
On Wednesday, June 13, 2018 at 6:47:07 AM UTC+10, M Philbrook wrote:
> In article <pfl5jm$f1i$1@dont-email.me>, fizzbintuesday@that-google-
> mail-domain.com says...
> >=20
> > bill.sloman@ieee.org wrote:
> > > On Monday, June 11, 2018 at 12:44:06 PM UTC+10, Tom Del Rosso wrote:
> > >> Winfield Hill wrote:
> > >>> Jasen Betts wrote...
> > >>>>
> > >>>> On 2018-06-09, chetan wrote:
> > >>>>>
> > >>>>> I need to design nonisolated dc-dc bidirectional converter
> > >>>>> for dc nano gride system. i am not sure how to draw in
> > >>>>> ltspice or in Matlab. please help me out.
> > >>>>
> > >>>> Do you mean that energy can flow in both directions?
> > >>>
> > >>> Fully synchronous buck or boost converters are bi-directional.
> > >>> Current flows to maintain an in/out voltage ratio, set by the
> > >>> duty cycle of the two switch system. (Synchronous converters
> > >>> use switches instead of diodes.) For example, you can equalize
> > >>> the charge state between a 12V and a 42V battery. I like to
> > >>> call them bus converters. The nano-grid concept appears to be
> > >>> house-wide systems replacing the traditional AC power lines.
> > >>> They assume energy sources in your home. I have 8.5kW solar-
> > >>> panel on my roof to feed my house-hold use, with the extra
> > >>> going to the grid. But it works using conventional AC lines.
> > >>
> > >> What page is that on? :)
> > >
> > > It's in the even-more extended edition, which hasn't been published
> > > yet (and probably never will be) and - for the moment - only exists
> > > in the minds of people who know something about electronic design
> > > (which excludes Tom Del Rosso).
> >=20
> > You forgot the smiley. There are also people who have been regular=20
> > posters and have passed away and are missed (which will exclude you whe=
n=20
> > you croak because you won't be missed at all).
>=20
> well put! )
Jamie is another - along with NT and Tom Del Rosso - who really wouldn't be=
missed. Like them - and perhaps to a marginally greater extent - he contri=
butes nothing positive to the forum, and fails to appreciate other people's=
positive contributions because he doesn't know enough to recognise their v=
alue.
--=20
Bill Sloman, Sydney
Reply by M Philbrook●June 12, 20182018-06-12
In article <pfl5jm$f1i$1@dont-email.me>, fizzbintuesday@that-google-
mail-domain.com says...
>
> bill.sloman@ieee.org wrote:
> > On Monday, June 11, 2018 at 12:44:06 PM UTC+10, Tom Del Rosso wrote:
> >> Winfield Hill wrote:
> >>> Jasen Betts wrote...
> >>>>
> >>>> On 2018-06-09, chetan wrote:
> >>>>>
> >>>>> I need to design nonisolated dc-dc bidirectional converter
> >>>>> for dc nano gride system. i am not sure how to draw in
> >>>>> ltspice or in Matlab. please help me out.
> >>>>
> >>>> Do you mean that energy can flow in both directions?
> >>>
> >>> Fully synchronous buck or boost converters are bi-directional.
> >>> Current flows to maintain an in/out voltage ratio, set by the
> >>> duty cycle of the two switch system. (Synchronous converters
> >>> use switches instead of diodes.) For example, you can equalize
> >>> the charge state between a 12V and a 42V battery. I like to
> >>> call them bus converters. The nano-grid concept appears to be
> >>> house-wide systems replacing the traditional AC power lines.
> >>> They assume energy sources in your home. I have 8.5kW solar-
> >>> panel on my roof to feed my house-hold use, with the extra
> >>> going to the grid. But it works using conventional AC lines.
> >>
> >> What page is that on? :)
> >
> > It's in the even-more extended edition, which hasn't been published
> > yet (and probably never will be) and - for the moment - only exists
> > in the minds of people who know something about electronic design
> > (which excludes Tom Del Rosso).
>
> You forgot the smiley. There are also people who have been regular
> posters and have passed away and are missed (which will exclude you when
> you croak because you won't be missed at all).
well put! )
Reply by Phil Hobbs●June 12, 20182018-06-12
On 06/12/2018 03:40 PM, Tom Del Rosso wrote:
> Phil Hobbs wrote:
>> On 06/12/2018 02:31 PM, Tom Del Rosso wrote:
>>> Winfield Hill wrote:
>>>>
>>>> What was DangerDave's real name?
>>>
>>> No idea. At least we know his first name. It would be worse if it
>>> was just a nym, but it seems we never get to know any of the
>>> anonymous posters personally.
>>>
>>>
>>>
>> Then there was Vlad Vassilievsky.
>
> I remember him, but didn't know he passed. I don't remember Virg Wall
> though.
>
>
>
Yeah, Vlad died suddenly a few years ago.
Virg was an old-time NASA guy from the Apollo era, iirc. Certainly a
1960s aerospace dude.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
Reply by Tom Del Rosso●June 12, 20182018-06-12
Phil Hobbs wrote:
> On 06/12/2018 02:31 PM, Tom Del Rosso wrote:
>> Winfield Hill wrote:
>>>
>>> What was DangerDave's real name?
>>
>> No idea. At least we know his first name. It would be worse if it
>> was just a nym, but it seems we never get to know any of the
>> anonymous posters personally.
>>
>>
>>
> Then there was Vlad Vassilievsky.
I remember him, but didn't know he passed. I don't remember Virg Wall
though.
Reply by Phil Hobbs●June 12, 20182018-06-12
On 06/12/2018 02:31 PM, Tom Del Rosso wrote:
> Winfield Hill wrote:
>>
>> What was DangerDave's real name?
>
> No idea. At least we know his first name. It would be worse if it was
> just a nym, but it seems we never get to know any of the anonymous
> posters personally.
>
>
>
Then there was Vlad Vassilievsky.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
Reply by Tom Del Rosso●June 12, 20182018-06-12
Winfield Hill wrote:
> Jasen Betts wrote...
>>
>> On 2018-06-09, chetan wrote:
>>>
>>> I need to design nonisolated dc-dc bidirectional converter
>>> for dc nano gride system. i am not sure how to draw in
>>> ltspice or in Matlab. please help me out.
>>
>> Do you mean that energy can flow in both directions?
>
> Fully synchronous buck or boost converters are bi-directional.
> Current flows to maintain an in/out voltage ratio, set by the
> duty cycle of the two switch system. (Synchronous converters
> use switches instead of diodes.) For example, you can equalize
> the charge state between a 12V and a 42V battery. I like to
> call them bus converters. The nano-grid concept appears to be
> house-wide systems replacing the traditional AC power lines.
> They assume energy sources in your home. I have 8.5kW solar-
> panel on my roof to feed my house-hold use, with the extra
> going to the grid. But it works using conventional AC lines.
BTW I wasn't just kidding when I asked "what page." This doesn't sound
familiar.
Reply by Tom Del Rosso●June 12, 20182018-06-12
Winfield Hill wrote:
>
> What was DangerDave's real name?
No idea. At least we know his first name. It would be worse if it was
just a nym, but it seems we never get to know any of the anonymous
posters personally.