... (10.18) Va3 = 10.25 Volts From equation (10.19) Vb3 = 35 .5 Volts ∴ V03RMS = 26. 1 26 Volts, Z3 = R + (6 2× π×50×50×10 -3 ) = 94.78 ohms L Version EE IIT, Kharagpur 16 ∴ I3RMS = V03RMS = 0.27 56 Amps ... Kharagpur 10 .3 Singlephase fully controlled bridge converter Fig 10 .3 (a) shows the circuit diagram of a singlephase fully controlled bridge converter It is one of the most popular converter circuits ... be 20 Amps 2 × 230 Assuming continuous conduction v = cos30o = 179 .33 volts π For 20 Amps armature current to flow the back emf will be Eb = Va – IaRa = 179 .33 – 20 × 0.75 = 164 .33 volts E = 0.505...
... phân cực nghịch (điện anod âm điện catod), có dòng điện rỉ nhỏ chạy qua SCR 3/ 8 SCR (thyristor – siliconcontrolled rectifier) - Khi SCR phân cực thuận (điện anod dương điện catod), ta nối tắt ... tăng công suất cho tải, người ta cho SCR hoạt động nguồn chỉnh lưu toàn kỳ 6/ 8 SCR (thyristor – siliconcontrolled rectifier) Vì điện 50Hz có chu kỳ T=1/50=20nS nên thời gian điện xấp xỉ 0V đủ ... SCR (thyristor – siliconcontrolled rectifier) Nếu ta mắc nguồn điện chiều VAA vào SCR hình sau dòng điện nhỏ IG kích vào...
... Electron., vol 35 , no 2, pp 295 30 0, May 1988 [15] M J Ryan, W E Brumsickle, and R D Lorenz, “Control topology options for single- phase UPS inverters,” IEEE Trans Ind Appl., vol 33 , no 2, pp 4 93 501, ... 2, pp 33 – 35 , Jun 20 03 [ 13] K Holland, M Shen, and F Z Peng, “Z-source inverter control for traction drive of fuel cell–battery hybrid vehicles,” in Proc 40th Annu Meeting Ind Appl., Oct 2 6, 2005, ... Barreto, “A transformerless singlephase on-line UPS with 110V/220V input output voltage,” in Proc 21st Annu IEEE Conf Expo Appl Power Electron., Mar 19– 23, 20 06, pp 34 8 35 4 [9] C.-H Lai and Y.-Y...
... Fdr + = jFqrs+ ′ (9.8 -32 ) = − jF ′ (9.8 -33 ) s dr s dr + s dr − and s dr − F s qr − 36 3 SINGLE- PHASE INDUCTION MACHINES The steady-state torque may be calculated using (9.4 -34 ) if the three multiplier ... Figure 9.5 -3 Stator circuit with provisions for switching ias Open-Circuited Stator Phase For the purpose of analyzing an open-circuited stator phase, which is equivalent to single- phase operation, ... a counterclockwise rotation of 2π /3 rad That is a = e j ( 2π / 3) = − + j 2 (9.2-5) a = e j ( 4π / 3) = − − j 2 (9.2 -6) 33 8 UNBALANCED OPERATION AND SINGLE- PHASE INDUCTION MACHINES The inverse...
... [3] H.C Day, D.R Allee, Appl Phys Lett 62 (19 93) 269 1 [4] E.S Snow, P.M Campbell, P.J McMarr, Appl Phys Lett 63 (19 93) 749 [5] P.M Campbell, E.S Snow, P.J McMarr, Appl Phys Lett 66 (1995) 138 8 ... Physica E 13 (2002) 999 – 1002 e Fig AFM micrograph of a side-gated silicon nanowire acting as ÿeld e ect transistor The nanowire was doped at 2×1017 cm 3 thickness is ÿxed by the silicon top ... et al / Physica E 13 (2002) 999 – 1002 e the silicon top-layer, even for ultra-thin silicon layers (thickness as low as –20 nm), and allows to obtain a very sharp interface silicon layer=buried...
... Large number of turns • Aux has relative Small number of turns Φm Starting Torque in Singlephase motor Split Phase Principle • To produce a starting torque a rotating magnetic field must be produced ... main windg produce a flux Φ m while the Aux wndg produces a flux Φa Since the angles are out of phase a resultant rotating field is created • A centrifugal switch disconnects the Aux wndg from...
... Operation A phase motor self starts due to a rotating magnetic field in the windings If a singlephase was applied to one winding, it would simply pulse ... inductive reactance causing the current to lag Split Phase Motor A split phase motor has windings: Run winding Start winding Split Phase Motor The two windings cause the current to ... Similar in effect to the split phase motor Capacitor causes current in start winding to lead voltage Start and Run windings are approximately 90° out of phase Capacitor Start Motor High...
... iii 62 3. 3.1.2 3. 3.2 3.3 .3 3.4 Evaluation of Learning Gain Effect 65 Simulation Results Using Time Domain Repetitive Control for Inverter 67 3. 3.2.1 Linear ... 58 3.3 Plug-in Time Domain based Repetitive Control for Inverter 61 3. 3.1 Investigation of Learning Gain Effect on Time Domain Repetitive Controller 3. 3.1.1 62 Stability ... 27 2 .3. 1 .3 Filters and Sensors 28 2 .3. 1.4 Load Systems 30 2 .3. 1.5 THD measurement 30 Software Environment 31 Cascaded...