Motoci currenti

Waɗannan alƙaɗa yadda ake kula ƙarfafin mafi motoci a matsayin ƙarin bayan abu mai girma da ƙarin bayan abu mai tsarki. Tsawon ƙarfi na musamman tana cikin 70% zuwa 96%. Bara magana na mafi motoci don ake kula a kan: Ƙarin bayan abu mai tsarki (kW) Ƙarfin mafi motoci (%) Yana tabbatar da masana'antu mai tsari, biyu, da uku Kula na baya-baya Muhimman Kalamai Ƙarin Bayan Abu Mai Tsarki: Tsari: P_in = V × I × PF Biyu: P_in = √2 × V × I × PF Uku: P_in = √3 × V × I × PF Ƙarfi: % = (P_out / P_in) × 100% Misalolin Kula Misali 1: Mafi motoci mai uku, 400V, 10A, PF=0.85, P_out=5.5kW → P_in = √3 × 400 × 10 × 0.85 ≈ 5.95 kW Ƙarfi = (5.5 / 5.95) × 100% ≈ 92.4% Misali 2: Mafi motoci mai tsari, 230V, 5A, PF=0.8, P_out=1.1kW → P_in = 230 × 5 × 0.8 = 0.92 kW Ƙarfi = (1.1 / 0.92) × 100% ≈ 119.6% (Babu!) Bayanan Muhimmanci Magana da ƙarin bayan daidai Ba za a iya gudanar da ƙarfi zuwa 100% ba Amfani da ƙaramin kula na ƙarin doka Ƙarfi yana canzawa ta hanyar mu'amala

Na iko da aikace-aikacen da ya kula da slip ta motoci AC induction, wanda yana cikin farkon koɗi na stator magnetic field da rotor speed. Slip yana daya daga cikin manyan abubuwa masu muhimmanci wadanda suka taimaka wa ƙarfafar jirgin ruwa, inganci, da kuma matsayin shirya. Aikace-aikacen ya kunshi: Yadda ake baka synchronous da rotor speed → zama za a yi aikace-aikacen ta slip Yadda ake baka slip da synchronous speed → zama za a yi aikace-aikacen ta rotor speed Yadda ake baka frequency da pole pairs → zama za a yi aikace-aikacen ta synchronous speed Aikace-aikacen na zaman lafiya Tambayar Masu Muhimmiyar Synchronous Speed: N_s = (120 × f) / P Slip (%): Slip = (N_s - N_r) / N_s × 100% Rotor Speed: N_r = N_s × (1 - Slip) Misalai Aikace-aikacen Misali 1: Motoci da 4-pole, 50 Hz, rotor speed = 2850 RPM → N_s = (120 × 50) / 2 = 3000 RPM Slip = (3000 - 2850) / 3000 × 100% = 5% Misali 2: Slip = 4%, N_s = 3000 RPM → N_r = 3000 × (1 - 0.04) = 2880 RPM Misali 3: Motoci da 6-pole (P=3), 60 Hz, slip = 5% → N_s = (120 × 60) / 3 = 2400 RPM N_r = 2400 × (1 - 0.05) = 2280 RPM Tsari Na Iyakokin Zabinta da kuma aikace-aikacen ƙarfafar jirgin ruwa Bayyana da kuma aikace-aikacen abin da suka faru a cikin motoci na ƙasa Karatu: Muhimman abubuwa game da yadda motoci AC induction ke gudanar Bincike tsarin VFD control Bincike ƙarfafar jirgin ruwa da kuma power factor

Wani alat yi kalkula baluwa da ake bukata da shi don gudanar da motoci na zafi biyu a kan zafi daya. Ana iya amfani da shi a matsayin motoci masu yawan mafi girma (< 1.5 kW), tare da zama a gudanar da takarda mai tsarki zuwa 60–70%. Yadda ake bukata: darajar da ke cikin motocin, zafi daya da ma'ana, da kuma tafakka don kalkulawa: Baluwa na gudanar (μF) Baluwa na bukatar gudanar (μF) Ana sauki da gwamnati na kW da hp Kalkulawa na zamani a kan biyu Tsarin Yawanci Baluwa na gudanar: C_run = (2800 × P) / (V² × f) Baluwa na bukatar gudanar: C_start = 2.5 × C_run Da: P: Darajar da ke cikin motocin (kW) V: Zafi daya (V) f: Tafakka (Hz) Misalolin Kalkulawa Misali 1: Motoci na 1.1 kW, 230 V, 50 Hz → C_run = (2800 × 1.1) / (230² × 50) ≈ 11.65 μF C_start = 2.5 × 11.65 ≈ 29.1 μF Misali 2: Motoci na 0.75 kW, 110 V, 60 Hz → C_run = (2800 × 0.75) / (110² × 60) ≈ 2.9 μF C_start = 2.5 × 2.9 ≈ 7.25 μF Bayanan Muhimmiyar Ana iya amfani da shi a matsayin motoci masu yawan mafi girma (< 1.5 kW) Zama a gudanar da takarda mai tsarki zuwa 60–70% na baya Amfani da baluwon da suka tabbata da 400V AC ko da yake Idan an yi bukatar gudanar, ya kamata a rufe baluwar da ke ciki Yi a kunshi motocin a kan "Y" configuration

An tool na ɗace kula masu tattalin 'yan karamin (PF) na mota mai kyau a cikin darajar da ke bayanar masu tattalin da suka faru. Dukun yawan uku na 0.7 zuwa 0.95. Bayyana abubuwan motoci don kula automatic: Masu tattalin (PF) Darajar da ke bayanar (kVA) Masu tattalin mai yawa (kVAR) Tsarin fasa (φ) Yana da shiga waɗanda, biyu, da uku fasa Kungiyoyi na muhimmanci Darajar da ke bayanar: Waɗanda fasa: S = V × I Biyu fasa: S = √2 × V × I Uku fasa: S = √3 × V × I Masu tattalin: PF = P / S Masu tattalin mai yawa: Q = √(S² - P²) Tsarin fasa: φ = arccos(PF) Misalolin Kula Misali 1: Mota uku fasa, 400V, 10A, P=5.5kW → S = √3 × 400 × 10 = 6.928 kVA PF = 5.5 / 6.928 ≈ 0.80 φ = arccos(0.80) ≈ 36.9° Misali 2: Mota waɗanda fasa, 230V, 5A, P=0.92kW → S = 230 × 5 = 1.15 kVA PF = 0.92 / 1.15 ≈ 0.80 Abubuwan Da Yake Da Kyau Bayyana abubuwan da za a fi sani PF ba zan iya sa 1 ba Amfani da alƙakari na ingantaccen gaba-gaba PF yana yawan sama da mafi girma