Tuesday, November 24, 2020

The case for an open source microinverter design

My target is installing PV that allows me to make back my investment in five or fewer years when I'm paid about $.06/kwh.

I've found that inverter manufacturers seem to have very little interest in driving down costs.  They are more interested in maximizing their sales and protecting their customer base.

I've had very good experience installing obsolete Enphase inverters that are being liquidated.  The Enphase M215/M250 units are very reliable.  Near bullet proof.

The only flaw I've noticed is the horribly and unnecessarily expensive AC cabling which may be 1/4 to 1/3 of the total inverter cost.

 The old Enphase units "just work" when supplied a grid signal and DC power from PV panels.  A discouraging trend is for manufacturers to make their inverters work only after some communication with a gateway.  This is the case with newer Enphase IQ7s and a ABB inverter I've been attempting to test:

 https://www.energysage.com/solar-inverters/abb/5/micro-03-i-outd-us-208/

Though the DC input connectors are standard (MC-4), each manufacturer uses non-standard and proprietary AC connectors.  Needlessly.  Pointlessly other than to prevent mixing of inverters from more than one source.

We need an open source design that minimizes costs.


Sunday, November 22, 2020

1940 census - my father's family

FamilySearch.org just notified me that this record is available.

 https://www.familysearch.org/ark:/61903/3:1:3QS7-L9MY-HHB8?i=7&personaUrl=%2Fark%3A%2F61903%2F1%3A1%3AKWNR-45V

The family was emerging from The Great Depression and was about to undergo additional trials and disruption.

 My father, age 21, is living at home, a rent house on the Arkansas side of Texarkana only a few blocks east of downtown.  He was working as a shoe salesman for the Gus Kennedy Shoe Store in downtown Texarkana.  I was thinking the shoe store was on the Texas side, which has a larger commercial district, but a little googling reveals that it was on the Arkansas side.  My father likely walked to work; it would have been just a few blocks.  As a child following the war, I remember being taken, introduced, and "shown off" to my father's much respected former employer at the shoe store.  I see Gus Kennedy Jr operated the store long after the passing of his father.

My Aunt Alice was living at home again after having spent her high school years in Junction  Texas living with her aunt and uncle.  Her namesake Aunt Alice McKemie Patterson, offered to host her for those years to lessen the financial burden of the Depression.

My Uncle Gould, oldest of the children, was missing from the family home.  He was a radio personality for Dallas radio stations prior to the war.

My Uncle Ernest had Down's Syndrome; my grandparents cared for him as long as they were able.  For about twenty years following this census.

My grandfather is listed as a farmer though he lived just a few blocks from downtown Texarkana.  He, and the rest of the family, were developing a ~200 acre farm about 20 miles west; they lived part time at both locations.  The farm was soon to be taken by the US Army:

 https://en.wikipedia.org/wiki/Red_River_Army_Depot

The government taking of private property was very common early in the war; patriotism dictated little resistance by the property owners.  Typically, owners were promised return of the property at such time that the government no longer had a need/use.  Just a couple of many Texas examples: Matagorda Island and Fort Hood.

Prior to the 1940 census, my grandfather was mostly employed as a "drummer" or manufacturer's rep.  He would travel his large area by train and by car calling on retailers with dry good samples and make sales.  He also worked as a "land man".  Acquiring mineral leases to sell to wildcatters.

My father was soon to enlist in the US Army.  My mother traveled to California to marry in March 1942; my father had enlisted a month or so before Pearl Harbor.  My October 1943 birth certificate lists my father's employment as attending Officer's Candidate School.  The story is that they met while he was traveling down Moores Lane northwest of Texarkana and stopped to buy some figs which my mother was selling at roadside.  That could have been ~5 years prior to the census.

Sunday, November 8, 2020

Medal of Honor

 This inspired by a CBS Full Measure story aired 11/8/2020.

My grandmother was very proud through out her life of her status as a "Real Daughter of the Confederacy".  A status awarded by United Daughters of the Confederacy.  Membership in UDC requires an ancestor who provided Confederate service.  "Real Daughters" are those whose fathers provided that service.

My grandmother is a daughter of Confederate veteran Whitfield Roger Taylor (1841-1899).  In the 1930s, my great grandmother obtained a Confederate Widow's Pension.   From Arkansas, as I recall.  She was quite a bit younger than Whitfield and married after the war, in 1885.  At age 37, she was left a widow with seven children.  Because my great grandmother was born after the war, in 1867, Real Daughters were relatively rare during my grandmother's life time.

Whitfield's brother, Ricard, received a very early Congressional Metal of Honor for his yankee service in the war described only as "capturing the flag".  At least that is the only description I have found.  Full Measure tells us that a Medal of Honor Museum is being built.  I hope to eventually learn more of Richard Taylor via that facility.   I guess Richard would be my great grand uncle.  Uncle to my grandmother.  Maybe it is just "grand uncle".

https://en.wikipedia.org/wiki/National_Medal_of_Honor_Museum 

BTW, I consider "Full Measure" to be one of the VERY few network newsy shows worth watching.  Full Measure exposes much media bias.  To stay on the air in the environment of liberal control, they have to do that in a circumspect way rather than by just stating the obvious.


 11/15/2020

I just learned through FamilySearch.org that my grandmother (above) is the 9th great granddaughter of a Mayflower passenger.  That, through her mother, wife of Whitfield, Sara Cordelia Southerland.  The passenger is Richard Warren, born about 1578 died 1628.

This link MAY work:

https://www.familysearch.org/campaign/mayflower?ancestor_pid_1=KXML-7XC&et_cid=1817225&et_rid=160901819&linkid=CTA&cid=em-brc-10035



 

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Saturday, November 7, 2020

Cabin / Tiny House Shopping resumes


 

http://creativelivingsolutions.com/

 http://tinyhousetexas.com/


 

http://arnoldcustombuilders.com

 

The two pictured have the attractive to me high decks.  I have been looking into building such a deck attached to the new shed under which I expect to place the cabin but that it is a ~$20k choice.  The extra cost of the deck/porch in the upper photo is ~$12k.  As shown, that is a $90k-$100k unit.  I'll try to talk to Arnold about the structure in the lower photo.

Found the Arnold floorplan:

 https://cdn.hibuwebsites.com/08b0c476df4f4dab8abb1eda3ac7a70d/files/uploaded/Shelbi-Layout%281%29.pdf

 

 http://www.rrcathens.com/platinumcottages.html

 

https://photos.app.goo.gl/8zLLK2hdHvorDfcWA

 

11/9/2020

I received a quote on the Arnold unit pictured. 8'x28' with top deck and two small lofts.  $76.2k.  Plus, I imagine, state sales tax.  I had been hoping for $40k-$50k.  Otherwise, quite attractive.  Mini-split heating/cooling, two burner induction cook top, probably 10kw demand hot water.

11/24/2020

Homeless shelter:

https://www.palletshelter.com/