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.
hoe to draw bidirectional dc dc converter for dc nano grid in ltspice
Started by ●June 9, 2018
Reply by ●June 12, 20182018-06-12
Reply by ●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 ●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 ●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 ●June 12, 20182018-06-12
In article <pfl5jm$f1i$1@dont-email.me>, fizzbintuesday@that-google- mail-domain.com says...> > bill.sloman@ieee.org wrote: > > On Monday, June 11, 2018 at 12:44:06 PM UTC+10, Tom Del Rosso wrote: > >> Winfield Hill wrote: > >>> Jasen Betts wrote... > >>>> > >>>> On 2018-06-09, chetan wrote: > >>>>> > >>>>> I need to design nonisolated dc-dc bidirectional converter > >>>>> for dc nano gride system. i am not sure how to draw in > >>>>> ltspice or in Matlab. please help me out. > >>>> > >>>> Do you mean that energy can flow in both directions? > >>> > >>> Fully synchronous buck or boost converters are bi-directional. > >>> Current flows to maintain an in/out voltage ratio, set by the > >>> duty cycle of the two switch system. (Synchronous converters > >>> use switches instead of diodes.) For example, you can equalize > >>> the charge state between a 12V and a 42V battery. I like to > >>> call them bus converters. The nano-grid concept appears to be > >>> house-wide systems replacing the traditional AC power lines. > >>> They assume energy sources in your home. I have 8.5kW solar- > >>> panel on my roof to feed my house-hold use, with the extra > >>> going to the grid. But it works using conventional AC lines. > >> > >> What page is that on? :) > > > > It's in the even-more extended edition, which hasn't been published > > yet (and probably never will be) and - for the moment - only exists > > in the minds of people who know something about electronic design > > (which excludes Tom Del Rosso). > > You forgot the smiley. There are also people who have been regular > posters and have passed away and are missed (which will exclude you when > you croak because you won't be missed at all).well put! )
Reply by ●June 12, 20182018-06-12
On Wednesday, June 13, 2018 at 6:47:07 AM UTC+10, M Philbrook wrote:> In article <pfl5jm$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 ●June 13, 20182018-06-13
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. -- Thanks, - Win
Reply by ●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.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, - Win
Reply by ●June 14, 20182018-06-14
Winfield Hill wrote:> 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=0Thanks 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?
