VIETNAM NATIONAL UNIVERSITY HCM BACH KHOA UNIVERSITY OFFICE FOR INTERNATIONAL STUDY PROGRAMS ELECTRICAL ELECTRONIC ENGINEERING o0o Report Power Electric Lecturers Student HO CHI MINH CITY Measure Unit.
VIETNAM NATIONAL UNIVERSITY-HCM BACH KHOA UNIVERSITY OFFICE FOR INTERNATIONAL STUDY PROGRAMS ELECTRICAL-ELECTRONIC ENGINEERING -o0o - Report Power Electric Lecturers: Student: HO CHI MINH CITY Measure Unit: VOLTs (V) Lesson CHOPPER TYPE C Mode Pulse S1 Case ( f= 500.377hz) ( t=1ms) γ (%) 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Ucharge 0.38 2.93 6.27 8.12 9.15 11.29 12.6 13.83 14.64 15.27 16.1 17.02 18 18.53 19.13 20 20.78 21.23 22 URs 0.26 0.32 0.56 0.76 0.9 1.24 1.49 1.75 1.94 2.1 2.31 2.57 2.86 3.04 3.25 3.57 3.87 4.04 4.37 US1 29.31 26.8 23.2 21.25 19.92 17.47 15.88 14.39 13.37 12.6 11.54 10.34 9.1 8.34 7.53 6.3 5.22 4.6 3.54 URmax 380 500 750 1000 1080 1250 1400 1500 1600 1700 1800 1800 1900 2000 2100 2100 2200 2200 2200 210 250 500 750 760 1000 1100 1250 1300 1400 1500 1500 1600 1800 1800 1900 2000 2000 2000 (mV) URmin (mV) Comment: Ucharge and UR increase quite rapidly URs also have a tendency to go up when we increase γ (%) On the other hand Us1 decrease by a big amount Ucharge ( γ=5% ) UR ( γ=5% ) UL( γ=5% ) URs ( γ=5% ) US1 ( γ=5% ) Ucharge ( γ=95% ) UR ( γ=95% ) UL ( α=5 ) US1 ( α=5 ) Ucharge ( α=90 ) UR ( α=90 ) UL ( α=90 ) US1 ( α=90 ) Case Ton=T T=1/f 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Ucharge x 45.75 45.35 44.9 43.77 43.37 41.7 41.08 39.86 38.65 37.47 36.27 35.12 33.2 29.96 29.45 27.8 27.5 26.54 US1 x 8.58 12.12 13.3 16 17.35 20.91 22.27 24.76 26.51 28.33 29.81 31.25 33.23 36.48 37.11 38.1 38.46 38.48 UR x 6.8 6.57 6.36 5.92 5.81 5.25 5.05 4.71 4.39 4.13 3.88 3.67 3.34 2.84 2.77 2.57 2.5 2.42 UL x 42.5 42.25 41.8 40.8 40.56 39.08 38.5 37.39 36.26 35.23 34.15 33.14 31.35 28.45 28 26.45 26.16 25.3 Comment: We increase Ton, Ucharge decrease a significant amount On the other hand US1 increase a large amount UR and UL is opposite while UR decrease, UL increase Ucharge ( α=5 ) UR ( α=5 ) UL ( α=5 ) US1 ( α=5 ) Ucharge ( α=90 ) UR ( α=90 ) UL ( α=90 ) US1 ( α=90 ) ... US1 ( γ=5% ) Ucharge ( γ=95% ) UR ( γ=95% ) UL( γ=95% ) URs ( γ=95% ) US1 ( γ=95% ) Lesson CHOPPER TYPE E Mode Case1 ( f= 500Hz) ( t=2ms) γ (%) Ucharge URs US1 US4 URmax URmin 10 15 20 25 30 35