Gịnị bụ inverter?
Ihe ntụgharị ntụgharị na-atụgharị ike DC (batrị, batrị nchekwa) ka ọ bụrụ ike AC (n'ozuzu 220V, 50Hz sine wave). Ọ mejupụtara akwa inverter, mgbagha njikwa na sekit nzacha.
N'ikwu ya n'ụzọ dị mfe, inverter bụ ngwaọrụ eletrọnịkị nke na-atụgharị voltaji dị ala (12 ma ọ bụ 24 volts ma ọ bụ 48 volts) na-eduzi ugbu a n'ime 220 volts ọzọ na-agbanwe agbanwe. N'ihi na anyị na-ejikarị 220-volt alternating current rectifier mee ka ọ ghọọ ugbu a kpọmkwem, na inverter na-eme ihe n'akụkụ nke ọzọ, ya mere aha ahụ.
Gịnị bụ ainverter sine ebili mmiri
Enwere ike kewaa ndị ntụgharị dịka usoro ebili mmiri ha si dị, a. kewara n'ime ndị ntụgharị ntụgharị square, b. gbanwetụrụ ebili mmiri na c. sine ife inverters.
Ya mere, nkọwa nke sine wave inverter bụ inverter nke mmepụta waveform bụ sine wave.
Uru ya bụ na ebili mmiri nke mmepụta dị mma, mgbagha dị oke ala, na ebili mmiri ya na-adaba adaba na AC waveform nke grid mains. N'ezie, àgwà nke AC ike nyere site magburu onwe yainverter sine ebili mmiridị elu karịa nke okporo. The sine wave inverter nwere obere nnyonye anya na redio, nkwurịta okwu akụrụngwa na nkenke ngwá, obere mkpọtụ, ike ibu adaptability, nwere ike izute ngwa nke niile AC ibu, na dum igwe nwere elu arụmọrụ; mwepu ya bụ na akara na ikwu mgbazi ebili mmiri ntụgharị nke inverter dị mgbagwoju anya, nwere nnukwu ihe achọrọ maka ibe njikwa na teknụzụ mmezi, ma dị oke ọnụ.
Kedu ka o si arụ ọrụ?
Tupu ewebata ụkpụrụ ọrụ nkeinverter sine ebili mmiri, buru ụzọ webata ụkpụrụ ọrụ nke inverter.
The inverter bụ a DC ka AC transformer, nke bụ n'ezie a usoro nke voltaji inversion na onye ntụgharị. Onye ntụgharị na-atụgharị voltaji AC nke grid ike ka ọ bụrụ nrụpụta 12V DC kwụsiri ike, ebe onye ntụgharị na-atụgharị mmepụta voltaji 12V DC site na nkwụnye ọkụ n'ime nnukwu ọkụ eletrik dị elu nke AC; akụkụ abụọ a na-ejikwa usoro pulse width modulation (PWM) na-ejikarị eme ihe. Akụkụ ya bụ isi bụ onye njikwa agbakwunyere PWM, ihe nkwụnye ahụ na-eji UC3842, onye ntụgharị na-eji mgbawa TL5001. Oke voltaji na-arụ ọrụ nke TL5001 bụ 3.6 ~ 40V, a na-ejikwa ihe mgbapụ njehie, onye na-ahụ maka njikwa, oscillator, onye na-emepụta PWM nwere njikwa mpaghara nwụrụ anwụ, sekit nchebe dị ala na sekit nchebe dị mkpụmkpụ.
Akụkụ ntinye ntinye: Enwere akara 3 na akụkụ ntinye, 12V DC ntinye VIN, ọrụ na-eme ka voltaji ENB na akara ngosi njikwa ugbu a DIM. A na-enye VIN site na nkwụnye ọkụ, ENB voltaji na-enye MCU na motherboard, uru ya bụ 0 ma ọ bụ 3V, mgbe ENB = 0, inverter anaghị arụ ọrụ, na mgbe ENB = 3V, inverter na-arụ ọrụ nkịtị; ebe voltaji DIM Na-enye site na bọọdụ isi, oke mgbanwe ya dị n'etiti 0 na 5V. A na-enyeghachi ụkpụrụ DIM dị iche iche na nzaghachi nzaghachi nke onye na-ahụ maka PWM, na nke ugbu a nke onye ntụgharị na ibu ga-adịkwa iche. Dị ntakịrị uru DIM, ka ntanye mmepụta nke inverter dị ntakịrị. ibu.
Sekit mmalite mmalite voltaji: Mgbe ENB nọ n'ọkwa dị elu, ọ na-ewepụta voltaji dị elu iji mee ka tube azụ azụ nke Panel.
Onye na-ahụ maka PWM: Ọ nwere ọrụ ndị a: voltaji ntụaka n'ime, amplifier njehie, oscillator na PWM, nchebe overvoltage, nchebe n'okpuru voltaji, nchebe sekit mkpụmkpụ, na transistor mmepụta.
Ntugharị DC: Ihe ntụgharị ntụgharị voltaji bụ nke MOS na-atụgharị tube na inductor nchekwa ike. A na-eme ka pulse ntinye ahụ dịkwuo elu site na ihe nrịbama-pull ma na-ebugharị MOS tube ka ọ rụọ ọrụ mgbanwe, nke mere na voltaji DC na-akwụ ụgwọ ma na-agbapụta inductor, ka njedebe nke ọzọ nke inductor nwee ike nweta AC Voltage.
LC oscillation na mmepụta circuit: hụ na 1600V voltaji chọrọ maka oriọna na-amalite, na ibelata voltaji na 800V mgbe oriọna malitere.
Nzaghachi voltaji mmepụta: Mgbe ibu na-arụ ọrụ, a na-enyeghachi voltaji nlele azụ ka ọ kwụsie ike mmepụta voltaji nke inverter m.
(Ihe osise sekit sekit gbagwojuru anya)
Ihe dị iche n'etiti sine wave inverter na nkịtị inverter bụ na mmepụta waveform ya bụ sine wave zuru oke na ọnụ ọgụgụ mgbagwoju anya dị ala, n'ihi ya, ọ dịghị nnyonye anya na redio na ngwa nkwurịta okwu, mkpọtụ ahụ dịkwa oke ala, ọrụ nchebe zuru oke. , na n'ozuzu arụmọrụ dị elu.
Ihe kpatara nainverter sine ebili mmirinwere ike iwepụta ebili mmiri zuru oke bụ n'ihi na ọ na-eji teknụzụ SPWM nke dị elu karịa teknụzụ PWM.
Ụkpụrụ nke SPWM dabeere na ụkpụrụ nke nhata na-eme ihe na-arụ ọrụ na ngwaọrụ oge ọrụ: ọ bụrụ na ọkpụkpụ na-eme ihe na-arụ ọrụ na-arụ ọrụ oge, ngwaahịa nke ọnụ ọgụgụ kasị elu na oge ọrụ hà nhata, na pulses ndị a nwere ike ime ka ọ bụrụ otu.
SPWM na-atụnyere ebili mmiri triangular na ugboro ole a kapịrị ọnụ yana ọnụ ahịa kachasị elu (dị ka ịgbanye ugboro 10k) na ntụgharị sine wave (ebili mmiri bụ isi) nke ugboro na voltaji agbanwe, ka ọ na-akụda voltaji DC (ụkpụrụ na-agbanwe okirikiri ọrụ) ka ọ dị ka ọ dị. nrụtụ aka sine ife na ngwaọrụ. A na-edozi njupụta na ugboro nke sine wave ntụaka ka ọ na-ebute ebili mmiri DC voltaji pulse obosara nke kwekọrọ na sine wave na njupụta dị iche iche na frequencies.
Oge nzipu: Feb-05-2024
