How to make your own home solar. With Pictures + solar book

[TristanWS]

ok sir gawa ako ng feedback mamaya... so far ok naman yung inverter... nasubukan ko na sya sa automatic washing machine at ref... yung isang ref na pang tindahan yung ref ng coke namatay yung inverter pero nung nilipat ko sa medyo mababang wattage na ref ayun napagana nya yung ref.. meron syang meter dun sa gilid na nag iindicate ng load pero di naman umakyat yung meter..

KNOW YOUR LOAD POWER FACTOR AND PROTECT YOUR OFF GRID INVERTER!
by Rogel Naval, EE, Mar 31, 2017

AC power supplied by Meralco has 2 components. True Power and Reactive Power. The combination of which is called Apparent Power. We only pay for the True Power which is expressed in watts and KWH. The other component, the reactive power, which is expressed in VAR or KVAR, we dont pay for this.

But it will be much different if you are using off grid inverter. Your inverter must supply the apparent power, the combination of true power and reactive power.

For example: Inverter is rated at 1kw. The load is 700w. You may think that it is ok because load is about 70% of rated power. If the power factor of the load is only 50% or 0.5, the total apparent power supplied by the inverter is already 1400VA (volt-amperes)

Power factor = True power/Apparent Power.

Apparent power = True power / Power factor (700w/0.5 = 1400VA). This means also that reactive power is 700var.

Battery does not supply reactive power. It only supplies true power. It is the inverter components like inductors and capacitors that received and delivers reactive power to and from the load.

If load power factor is low, it must be corrected using a capacitor (same as power saver that you can buy at the mall) . But the value of capacitor must be computed. (Computations are available in the internet). If power factor is low say 50%, the inverter will draw 50% more current and increase internal loss in the inverter. This waste can easily be avoided if you can correct the power factor. Power factor dictates the efficiency of inverters also.

RULE OF THUMB:
Power factor limits the capacity of your inverter. Hence if you dont know the power factor, stay at 50% of inverter rating. For example 1kw inverter, run only at 500w.

But power factor can go down to a very low number so BEWARE! This is one major reason why that high frequency inverter easily failed. Use transformer type inverter for mixed loads. Its big transformer can handle reactive power much better than those high frequency inverters. But BEWARE also! Not all low frequency inverter are created the same. Cheap toroidal models have lower efficiency, which have the same performance characteristics of EI core transformer. Same as not all EI core low frequency inverter are the same. Mosfets quality alone can lower the performance characteristics of an inverter.

 

[chris99val]

ang nakuha ko lng k TS is ung mechanical timer.. thanks sa tips.. ENGLUSH kasi ee.. OPLAN GALUGAD CD-R KING..

 

[rrmronald]

after 5 days sa pagbasa ng thread na ito at maraming akong natutunan (konti lg pala slow learner ako eh) salamat po maam awinahe at sir Tristan... sa mga nag ambag sa thread..ako po at taga Iloilo kami po any merong pinakamahal na kuryente sa pilipinas ): kasalukuyang nag iipon para sa small set up na solar power sa probinsya eto po ang aking plano 100w solar panel (canvass nlang ako sa Iloilo City kung saan mura at maganda), 20a solar controller at 300w or 500w na power inverter 3 pirasong 5w LED na ilaw at 65w na electricfan... at pag meron nang tv eh idadagdag nlang cguro po minimum na 5 hrs lg gagamitin sa isang araw or max 8 hrs.. kasi sa weekend lg ako umuuwi ng probinsya (: pa wulong nman po kung ok na itong set up or baka po may kulang pa sana sa December pag dating ng 13month pay eh mabili ko ng paunti unti ang kaylangan ko (:

BTW maam punta ako ng Palawan sa march 2018 Balik sa Balabac (:

 

[wamiruk]

sa kasamaang palad di ko po na test ang charging parameters ng snadi inverter dahil kulang ang wattmeter ko sa ac side at medyo busy na

after 5 days sa pagbasa ng thread na ito at maraming akong natutunan (konti lg pala slow learner ako eh) salamat po maam awinahe at sir Tristan... sa mga nag ambag sa thread..ako po at taga Iloilo kami po any merong pinakamahal na kuryente sa pilipinas ): kasalukuyang nag iipon para sa small set up na solar power sa probinsya eto po ang aking plano 100w solar panel (canvass nlang ako sa Iloilo City kung saan mura at maganda), 20a solar controller at 300w or 500w na power inverter 3 pirasong 5w LED na ilaw at 65w na electricfan... at pag meron nang tv eh idadagdag nlang cguro po minimum na 5 hrs lg gagamitin sa isang araw or max 8 hrs.. kasi sa weekend lg ako umuuwi ng probinsya (: pa wulong nman po kung ok na itong set up or baka po may kulang pa sana sa December pag dating ng 13month pay eh mabili ko ng paunti unti ang kaylangan ko (:

BTW maam punta ako ng Palawan sa march 2018 Balik sa Balabac (:

sir from antique ako... galiing ky hanem solar yung inverter ko.. yung store nya sa roxas, capiz lang. kumpleto naman mga items nya dun for small setups

 

[awinahe]

after 5 days sa pagbasa ng thread na ito at maraming akong natutunan (konti lg pala slow learner ako eh) salamat po maam awinahe at sir Tristan... sa mga nag ambag sa thread..ako po at taga Iloilo kami po any merong pinakamahal na kuryente sa pilipinas ): kasalukuyang nag iipon para sa small set up na solar power sa probinsya eto po ang aking plano 100w solar panel (canvass nlang ako sa Iloilo City kung saan mura at maganda), 20a solar controller at 300w or 500w na power inverter 3 pirasong 5w LED na ilaw at 65w na electricfan... at pag meron nang tv eh idadagdag nlang cguro po minimum na 5 hrs lg gagamitin sa isang araw or max 8 hrs.. kasi sa weekend lg ako umuuwi ng probinsya (: pa wulong nman po kung ok na itong set up or baka po may kulang pa sana sa December pag dating ng 13month pay eh mabili ko ng paunti unti ang kaylangan ko (:

BTW maam punta ako ng Palawan sa march 2018 Balik sa Balabac (:

Lucky you... Ganda sa Balabac!!
What about your battery? I think kulang ang setup mo for what you want to power... with 100 watt panel only and a 20 amp controller you can only recharge a 50 or 70 Ah Battery... which is enough for the lights of course, but not for 65 watt fan and tv running 5 hrs!
A 70 Ah battery can run only your fan + inverter for 5 hrs...
I suggest you to buy a 12 volt fan (there are cheaper now) which will consume mayber 2 amp per hour... (it's cheaper to buy 12 volt fan than to add a battery, coz if you add a battery (mahal) you need also to add a solar panel!

BTW, ang pinakamahal na kuryente sa buaong Pilipinas ay Palawan Sobrang mahal and always brownout

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ang nakuha ko lng k TS is ung mechanical timer.. thanks sa tips.. ENGLUSH kasi ee.. OPLAN GALUGAD CD-R KING..

My mechanical timer died few months ago after working for more than 4 years... Wala na sa CDR king dito sa Palawan,... so I found a new one sa Lazada pero mas mahal: almost 500 pesos!

 

[CyrusGuieb]

thnx po

 

[rrmronald]

sa kasamaang palad di ko po na test ang charging parameters ng snadi inverter dahil kulang ang wattmeter ko sa ac side at medyo busy na





sir from antique ako... galiing ky hanem solar yung inverter ko.. yung store nya sa roxas, capiz lang. kumpleto naman mga items nya dun for small setups

madalas aka sa roxas ano po pangalan ng store nya at maka dalaw (:

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Lucky you... Ganda sa Balabac!!
What about your battery? I think kulang ang setup mo for what you want to power... with 100 watt panel only and a 20 amp controller you can only recharge a 50 or 70 Ah Battery... which is enough for the lights of course, but not for 65 watt fan and tv running 5 hrs!
A 70 Ah battery can run only your fan + inverter for 5 hrs...
I suggest you to buy a 12 volt fan (there are cheaper now) which will consume mayber 2 amp per hour... (it's cheaper to buy 12 volt fan than to add a battery, coz if you add a battery (mahal) you need also to add a solar panel!


BTW, ang pinakamahal na kuryente sa buaong Pilipinas ay Palawan Sobrang mahal and always brownout

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thank you po maam ill considering the 12v Efan (: for upgrade na po ang isang panel at ang TV pag meron nang pambili as of now eh para po sa lights kasi medjo tahimik sa lugar namin kaya iilawan ko ang paligid para sa safety (: yung Efan po na 12v eh direct nlang po in clip sa battery? salamat po hintay nlang talaga dec para mabuo kona lahat (:


Aw akala ko po eh kami ang pinakamahal na kuryente (: alsost 13p kasi Kwh dito hehehe

 

[awinahe]

thank you po maam ill considering the 12v Efan (: for upgrade na po ang isang panel at ang TV pag meron nang pambili as of now eh para po sa lights kasi medjo tahimik sa lugar namin kaya iilawan ko ang paligid para sa safety (: yung Efan po na 12v eh direct nlang po in clip sa battery? salamat po hintay nlang talaga dec para mabuo kona lahat (:


Aw akala ko po eh kami ang pinakamahal na kuryente (: alsost 13p kasi Kwh dito hehehe

Yes all 12 votl appliances are connected directly to the battery... You should also consider 12 volt LED bulbs for your lights... If you don't use an inverter you save on the battery because the inverter consume energy...

We are now over 13 pesos/Kwh here and with the new tax bill wanted by Duterte, they say it will go up to 20 pesos per Kwh... Grabe talaga

 

[TristanWS]

... share ko lang nabasa ko sa EDN network... "if the power factor is corrected. a less expensive inverter can be used..."

Power Factor Correction
Source: http://www.edn.com/electronics-blog...Can-they-really-reduce-your-electricity-bill-

So-called "Power Saver Devices" (known by different names) are nothing but Power Factor Correction (PFC) devices that would connect to the mains and improve power factor measured by your electricity meter. Electric motors, fluorescent lamps, refrigerator, air conditioning and consumer electronics (such as televisions and computers) are examples of appliances that have power factors of less than one. This is because they include some type of storage element such as a capacitance or inductance.

A power factor correction device typically includes nothing but a capacitor that is to be connected in parallel as the additional load. The effect of two opposing reactance in parallel is to bring the circuit's total reactive power close to zero. This correction, however, will not change the amount of true power consumed by the load, but it will result in a substantial reduction of apparent power and of the total current drawn from the AC source. This is the principle behind most of the Power Saver devices available in the open market. As said earlier, this does not impact the real power, and since residential consumers are billed on real power this has no impact on the monthly bill. Even though a PFC device may not reduce the electricity bill, it does not change the fact that inductive loads run more efficiently with corrected or at least improved power factors and thus means less wear and tear of the appliance (i.e., the motor since current drawn by the motor is reduced), improving product life.

One situation where PFC can be extremely useful for residential situations is in the design of a backup energy system like a Home Inverter or UPS (Uninterruptible Power Supply). Correcting the power factor from 0.65 to 1 results in a 35% reduction in the size (VA rating), thus a less expensive inverter can be chosen though power consumption remains the same.

 

[fvazquez2005]

Dear TS,

Nice job on this. marami ka matutulungan sa nashare mo na ito.

 

[alarcon]

kmusta na po,sir/maam try ko sana mag diy lithium power wall kaya lang wala pa idea,ilan ang total AH kapag series ang 3 lithium 18650 battery?thank po

 

[TristanWS]

kmusta na po,sir/maam try ko sana mag diy lithium power wall kaya lang wala pa idea,ilan ang total AH kapag series ang 3 lithium 18650 battery?thank po

nag-try din sana ako mag-lithium kaya lang tinigil ko na kasi hindi available dito sa amin ang parts and components... sayang nga ang BMS ko... halungkatin ko muna ang kodigo ko... sana na-save ko.

 

[alarcon]

nag-try din sana ako mag-lithium kaya lang tinigil ko na kasi hindi available dito sa amin ang parts and components... sayang nga ang BMS ko... halungkatin ko muna ang kodigo ko... sana na-save ko.

oke po sir TristanWS,

 

[awinahe]

nag-try din sana ako mag-lithium kaya lang tinigil ko na kasi hindi available dito sa amin ang parts and components... sayang nga ang BMS ko... halungkatin ko muna ang kodigo ko... sana na-save ko.

Same here

 

[TristanWS]

nag-try din sana ako mag-lithium kaya lang tinigil ko na kasi hindi available dito sa amin ang parts and components... sayang nga ang BMS ko... halungkatin ko muna ang kodigo ko... sana na-save ko.

ganito yung project ko na hindi natapos... tatlo ang output 5V, 12V at 19V... dapat chargable by solar.

 

[alarcon]

ganito yung project ko na hindi natapos... tatlo ang output 5V, 12V at 19V... dapat chargable by solar.
http://i63.tinypic.com/2wohjko.jpg

sir try mo po order,marami na dyan maorderan

 

[wamiruk]

ang problema nalang sa 18650 kailangan ng accurate na charger. kailangan mo subukan ang capacity ng battery para ma sort sila according sa capacity. meron din kasi mga power cells na ginagamit sa power tools na mas mataas ang "C" rating at meron din na energy cells na mataas ang capacity pero nasa 1C lang ang discharge rate.

isa din yung BMS na may balance feature para balance ang pag charge ng mga cells sa isang pack

 

[TristanWS]

tinamad na ako mag-assemble kasi hindi kompleto ang tools ko at mahirap mag-hanap ng mga parts... tapos nakita ko sa internet na factory made na pala sa china ang lithium battery na may kasama nang charger... example picture below.

 

[gagoman08]

Anu pong maganda brand ng hybrid inverter na cheap lang ..

 

[awinahe]

Anu pong maganda brand ng hybrid inverter na cheap lang ..

I don't know pag maganda pero meron sa cdr king... I never used a Hybrid inverter... sorry!
http://www.cdrking.com/index.php?productstype=All+Products&searchvalue=inverter&x=0&y=0&mod=products&type=search