MPPT chu eng nge ni?

Chuvangin nikum Thawhlehni-a thil thleng hlimawm tak chu hetiang hi a ni. Kan procurement team atanga Dave (i hria em, supplier lead time chungchanga complain fo thin tlangval) nen coffee kan in dun a, min zawt a: "R&D meeting-a i sawi fo thin MPPT thil zawng zawng hi eng nge ni?".. tiin min zawt a.

Zawhna dik tak, dik tak chuan. Heng acronyms te hi inneihnaah confetti ang maiin kan paih kual a, mahse engineering bubble pawn lama mi tam zawk chuan kan sawi tum hi an hre lo tak zet a ni.

MPPT hi Maximum Power Point Tracking tihna a ni. Tin, ni lo, sales brochure thenkhatin eng ang pawhin a ri chhuak mahse, "i solar panels ti tha zawk" mai mai magical black box thenkhat a ni lo. A nihna takah chuan a hming hlauhawm tak i paltlang hnuah chuan a awlsam khawp mai.

A dik e, chuvangin hei hi han mitthla teh. I inchungah solar panel i thu a. A awlsam tawk niin a lang – ni êngin a rawn nuai a, electric a chhuak a, hna a thawk zo tawh. Chutiang khawpa awlsam a ni lo tih loh chu, a ni lo maw?

Solar panels hi a mak khawp mai. Eng thil pawh ti ila, thiltihtheihna nei reng reng an pe mai lo che. An voltage leh current siam chhuah hi eng load nge i connect tih a zirin a inthlak a, hei hi kicker chu a ni: chu panel atanga power tam ber i hmuhna tur voltage leh current inzawmkhawm bik KHAT chauh a awm.

Hei hi Maximum Power Point, a nih loh leh MPP kan ti a. Catchy hming, ka hria.

Tunah chuan, he point hi a kal kual reng a ni. Chhum chu a chungah a kal tlang em? MPP a che. Temperature a inthlak danglam em? MPP a che. Panel a dusty deuh em? I lo guess tawh a, MPP moves. Mit khap chunga target kal lai kah tum ang mai a ni.

Hei hi Sarah (kan lead system designer – brilliant woman, terrible taste in coffee) chuan thla hmasa khan client pakhat hnenah a sawi a: "Bucket pakhat tui khata khat i tum lai kha han ngaihtuah teh, mahse tap pressure chu a danglam zel a, flow rate tha ber hmuh theih nan valve i hawn hlat zawng chu i siamrem reng a ngai a ni," a ti. A famkim lo, mahse a thupui chu a sawi chiang hle.

MPPT hi standard a nih hma khan – hetah hian kum 1990 chho lai vel kan sawi a ni – solar installation tam zawkah chuan PWM controller kan tih hi an hmang thin. PWM hi Pulse Width Modulation tihna a ni a, chu chu i panel leh battery inkar connection chu charging control nan an on leh off rang tak zet tih sawina fancy tak mai a ni.

Buaina chu? PWM controller te hian a bul berah chuan i panel voltage chu i battery voltage nena inmil turin an pull down thin. Chuvangin 36V solar panel leh 12V battery i neih chuan... chu voltage tam tak chu i paih mai mai a ni. Sports car lei a, first gear-a khalh ngai lo ang mai a ni. Sure, a thawk a, mahse eng nge thisen chhuahna chu?

A nihna takah chuan heng PWM unit hlui zinga pakhat hi ka garage-ah hian kum 2009-a kan project atanga kan thut lai hi ka la nei reng a, tunah chuan paperweight tha tak a ni tawh.

MPPT

MPPT controller chu a bulpui berah chuan a danglam a ni. I panel voltage chu battery level thlenga dump down mai ai chuan DC-DC converter (electronic gear box angin ngaihtuah rawh) hmangin chu voltage sang zawk chu battery voltage hniam zawkah current tam zawkah a chantir tak tak a ni.

Hetah hian physics bit chu a awm a, mahse tawi te tein ka tiam a ni: Power=Voltage × Current. Chuvangin i panel (108W) atanga 3A ah 36V i neih chuan MPPT controller chuan chu chu 9A ah roughly 12V (108W pawh, minus some losses) ah a chantir thei a ni. Power SAME i hmu a, i battery-in a hman tak tak theih tur form danglam takah chauh.

Mahse, lo nghak teh, a tam zawk! (Infomercial ka en tam lutuk)

MPPT controller hian he conversion hi vawi khat chauh a ti lo va, ni khatah a ko lo. Panel output a teh reng a, panel-a a load a present chu a tweak a, a teh leh a, chu sweet spot – Maximum Power Point – chu engtik lai pawha i panel atanga absolute most power a lakchhuahna hmun chu zawng turin a insiamrem zel a ni.

Second khatah vawi tam tak he zai hi a ti thin. Nilengin, nitin.

Tunah chuan hetah hian a ngaihnawm chho ta a, kan company ang company te hian technical review meeting-ah inhnialna hun an hmang nasa lutuk bawk.

MPP tracking na tur algorithms hrang hrang loads a awm a:

Perturb leh Observe (P&O) tih a ni.– Hei hi hmanlai rintlak chu a ni. Controller chuan operating point chu kawng khatah a nudge a, power a sang emaw a tlahniam emaw a check a, chutah chuan a nudge leh thin. Simple, effective, mahse MPP vel chu zu rui keyhole zawng tum ang maiin a oscillate thei. Hei hi kan Model S-150 series-ah hian kan hmang a, a chhan chu a finfiah a, implement pawh a man tlawm hle.

Conductance tihpunna (Incremental Conductance) a ni– Mathematically elegant zawk, a dik zawk nia sawi. A nihna takah chuan? Academic paper-in a sawi angin khawvel dinhmun tak takah chuan P&O aiin dramatic takin a perform tha zawk ka la hmu ngai lo. Nikum nipui lai (June atanga August 2022) chhung khan thla thum chhung zet chu a sir lehlamah-by-kan test a, energy harvest-a danglamna chu 2% aia tlem a ni. Application tam zawk tan chuan extra processing overhead a phu lo.

Fractional Open Circuit Voltage atanga chhuak a ni– Panel open-circuit voltage atanga thlirin guess a la thin. Fast mahse a dik lo zawk. Chinese unit man tlawm thenkhat chuan hei hi an hmang a, i hre thei ang – an tling tawk a, mahse an ropui lo.

Tichuan, hmanraw thar zawk fancy zawng zawng – neural network, fuzzy logic, sliding mode control te chu i nei vek tawh ang. Tin, en teh, research lab leh niche application-ah te hmun an nei tih ka chiang a, mahse installation 95% tan chuan? P&O hian hna chu a thawk tha khawp mai.

Kan marketing department atanga Tom chuan buzz factor atan "AI-powered MPPT" kalpui turin min nawr reng a. Neural network hian he application atan hian awmzia a nei lo va, hlawkna tak tak awm lovin cost leh complexity a belhchhah mai dawn tih kan hrilh fo thin. He inhnialna hi October thla atang khan a la awm tan a ni. Ṭanpuina thawn rawh.

MPPT

"Mahse, engtiang chiahin nge a tha zawk?" - Engpawh. Mal. Dawrtu. Inhmukhawm.

Okay, chuvangin kum 2022 chhung zawnga field test kan kalpui atanga number dik tak thenkhat chu hetiang hi a ni:

Spain khawthlang lam (Málaga bial, i hriat duh chuan)-a kan installation-ah khan:

MPPT vs PWM: A vaiin 25-30% in energy lakkhawm a tam zawk

Hmasawnna tha ber: 45% (hei hi December thla a ni a, partial shading nen)

Hmasawnna chhe ber: 15% (mid-summer, ni thianghlim, PWM pawhin hna a thawh that lai)

Hmasawnna chu a lian ber a ni:

I panel voltage hi battery voltage aiin a sang zawk hle

Partial shading i nei a

Temperature a inang lo hle

Array ah hian panels inmil lo i nei a

Engkim hi ideal a nih chuan a te ber a ni – chu chu a bul berah chuan khawvel tak takah a awm ngai lo.

Full circuit diagram hmangin ka bore lo ang che, mahse topology bulpui chu hetiang hi a ni:

MPPT controller tam zawk chuan an power stage atan buck converter (step-down), boost converter (step-up), emaw buck-boost converter (a pahnih hian an ti thei) emaw an hmang thin. Buck topology nen kan kal tlangpui a, a chhan chu solar panel tam zawk hi an charge na battery aiin voltage sang zawk an ni.

Control section-ah hian a tlangpuiin:

Microcontroller pakhat (kan premium line-ah hian STM32 series kan hmang) .

Voltage leh current sensor te a awm bawk

Temperature sensor (panel, battery, leh controller ngei tan pawh) .

User interface chi khat (LCD screen, Bluetooth, eng pawh nise) .

Chu chu a ni tak zet a ni. Magic chu software-ah a awm vek – operating point siamrem dan tur tichiangtu algorithm-ah hian a awm vek a ni.

Thla leha kan tlangzarh tur Model X-300 thar (March 8th-a Amsterdam-a SolarTech Expo-a official-a puan – i awm chuan hi sawi rawh!) hian dual-core processor a hmang a, chuvang chuan MPPT algorithm atanga innghat lovin safety monitoring kan kalpui thei a ni. Bit overkill a ni em? Maithei. Mahse nikum khan Australia-ah inelna neitu unit-in kangmei a chhuah hnua chu thil thleng (hming erawh ka sawi lo ang, mahse in hre tawh ngei ang), chance kan la lo.

"MPPT hian i panel atang hian power tam zawk a pe che".– Ni lo, i panel hian ni êng atanga a siam chhuah chu a siam chhuak thin. MPPT hian chu power awm zawng zawng chu i hmanral vek ai chuan i USING tih a tichiang mai a ni.

"System tenau tak nen chuan MPPT i mamawh lo".- Bawlhhlawh. System tenau tak pawhin hlawkna a nei. Sure, absolute energy gain hi a tlem zawk a, mahse percentage-wise chuan a inang vek thung.

"MPPT hi grid-tie system tan chauh a ni".– A dik lo bawk. Battery charging atan a thawk tha hle a, a takah chuan kan hralhna tam zawk kan hmuhna hmun a ni.

"MPPT controller zawng zawng hi a bulpui berah chuan a inang vek".– Ha! Chu chu engineering team hnenah hrilh rawh. Thla tam tak chhung chu efficiency, thermal management, reliability tihchangtlun nan kan hmang thin. Mahse ka pawm ang, user pangngai tan chuan £50 Chinese unit leh kan £400 controller hi a ni theinia langinang. Thla ruk hnuah a man tlawm zawk a hlawhchham thlengin, chu chu.

En teh, kan thil siamah hian ka hralh tur che a ni a, mahse dik takin ka sawi ang (ka boss hnenah hetiang hian ka sawi tih hi sawi suh):

System te tak te (50W hnuai lam), cable run tawi tak i neih chuan i panel voltage chu i battery voltage nen a inmil hle a, budget tight takah i awm bawk – PWM hi a tha mai thei. Table-ah chakna engemaw zat i dah ang a, mahse a chang chuan chu chu pawm theih trade-off a ni.

Nikum khan customer pakhat kan nei a, Scottish Highlands. 20W panel, 12V battery, £30 budget-a weather station te tak te pakhat power pe duh a ni. PWM controller man tlawm tak ka recommend a. Engtin pawhin kan MPPT unit chu "a tha ber a duh" vangin a lei a ni. Fair enough, a pawisa a ni a, mahse chu thutluknaah chuan ROI chu a ni ngai lo mai thei.

Khawiah nge he technology hi a kal dawn? Awle, trend tlemte kan hmu dawn a ni:

MPPT sem chhuah a ni– Array pumpui tan controller lian tak pakhat ai chuan panel tinah optimizer te zawk. Shading atan a tha zawk a, mahse cost leh complexity a belhchhah thung. Tunah hian Norway rama pilot project-ah hengte hi kan test mek a ni.

Cloud connectivity a awm bawk– Mi zawng zawng hian an solar controller hi an smartphone nena inbiakna neih an duh vek. Sure, engvangin nge ni lo. Kan app hi a takah chuan a decent hle a, keimah ngei pawhin ka sawi ve a nih pawhin. Real-time performance, historical data i hmu thei a, thil dik lo a awm chuan a hriattir ang che. Kar hmasa khan update kan nawr a, chu chuan battery state-of-charge estimation a siam \\ha a – a hmain 5% velin beiseina sang lutuk a chhiar a ni.

Algorithm tha zawk– Hei hi ka personal obsession a ni. Pre{1}}emptively adjust turin weather forecast data hmangin predictive algorithm ka siam a. A thawk thei em? Achangin. Thawhrimna a phu em? Jury te chu an la out.

MPPT

Hetiang hian hun rei tak ka lo ti tawh a, tihsual tlanglawn tak takte hriat theih nan:

Size dik takin siam rawh– 10A panel atan 60A MPPT controller lei suh. A wasteful khawp mai. Chutiang bawkin sum i humhim ang tih ngaihtuahin undersize suh. A hnua panel tam zawk i dah belh theih loh hunah i tichhia mai ang.

A lum reng tur a ni– Heng thilte hian lumna a siam chhuak thin. Ni êng direct-a sealed box-ah dah suh. Ni e, miten hetiang hian an ti tak tak a ni. Ni lo, a chhan ka hrethiam lo.

Battery temperature sensor a ni– Hman rawh! Charging voltage hi temperature-compensated a ni tur a ni. Room temperature leh Sahara laihawl hian voltage hrang hrang a mamawh a.

Cable sizing a ni– Controller hnathawh that loh chungchangah call SO tam tak kan dawng a, chu chu cable lian lo zawk avanga voltage tlahniam vang a ni deuh ber. Kan website-a thisen chhuak cable sizing calculator hi hmang rawh.

Settings a pawimawh– Default settings chu conservative tak a ni. Manual (ka hria, shocking suggestion) chhiar la, i battery type bik atan configure rawh.

Chuti a nih chuan, MPPT chu eng nge ni? A bul berah chuan smart electronic matchmaker a ni a, i solar panel leh battery te chu a tha thei ang bera an thawk dun theih nan a enkawl a, i setup atanga watt awm thei zawng zawng squeeze turin condition danglam zel angin a insiamrem reng thin.

A hlu em? Installation tam zawk tan chuan, absolutely. PWM chunga MPPT controller senso tam lutuk hian kum khat emaw kum hnih emaw chhunga energy harvest tihpunnaah a inhlawhfa a ni.

Kan hralh avangin kan bias em? Ngei ngei. Mahse kan ring bawk a, chutiang a nih loh chuan kum 15 kalta chhung khan technology tihthianghlim leh market-a MPPT controller tha ber ber siam nan kan hmang lo ang. (And yes, company tin hian chutiang chuan an sawi tih ka hria a, mahse kan company te erawh chu an sawi tak tak a ni. Min do rawh.)

Eng pawh nise, zawhna i neih chuan comment-ah dah la, email-ah min shoot bawk ang che. A nih loh leh a tha zawk chu March thlaa Amsterdam expo-ah khan min man rawh. Coffee in tam lutuk leh MPPT ngaithlatute hnena hrilhfiahtu chu keimah ka ni ang.

Oh, leh plug rang tak – i MPPT chu anionic lithium battery hmanga siam a nii theih chuan. Fast charging characteristic hian a takah chuan controller chu thlasik ni rei lote chhungin a thawk tha thei a ni. Nikum atang khan he combo hi kan test tan a, efficiency gains hi dik tak chuan sawi tur a awm.