4 Elektronika Daya Penyearah setengah gelombang beban...
Transcript of 4 Elektronika Daya Penyearah setengah gelombang beban...
Elektronika DayaTEL 12043
OlehAhmad Faisal, ST, MT
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HALF‐WAVE RECTIFIER WITH RESISTIVE‐INDUCTIVE LOAD AND FREEWHEELING DIODE
Introduction to Power Electronics by DMZ
RencanganPembelajaran
Semester (RPS)Sem. B ta 2018/19
Jadwal Kandungan Jam
Minggu-1 Pengenalan
Senin (13.00-14-40 wib) R. II.1
Rabu (17.00-18.30 wib) R. A.II.3
Minggu-2 Rectifier ½ gel Beban R
Minggu-3 Rectifier ½ gel Beban RL
Minggu-4
Penyearah setengahgelombang beban resistif daninduktif dan diodefreewheling
Minggu-5Penyearah gelombang penuhbeban resistif
Minggu-6 DC-DC konverter
Minggu-7 Sejarah power supply
Minggu-8 Ujian tengah semester
Minggu-9 Buck converter
Minggu-10 Boost converter
Minggu-11 Manajemen thermal
Minggu-12 AC- AC konverter
Minggu-13 PE Curve
Minggu-14 SEPIC Converter
Minggu-15 Pengurusan energi dan daya
Minggu-16 Ujian Akhir
Tugas 1 Tugas 2
Learning Outcomes
Introduction to Power Electronics by DMZ
• To understand the operation and characteristics of rectifiers.
• To understand the performance parameters of the rectifiers.
• To learn techniques for analyzing the rectifier circuit.
• To learn techniques for designing the rectifier circuit.
AC‐DC Converter with RL Load and Freewheeling Diode
Introduction to Power Electronics by DMZ
(a) Half-wave rectifier with freewheeling diode(b) Equivalent circuit for Vs > 0(c) Equivalent circuit for Vs < 0.
Introduction to Power Electronics by DMZ
• For a positive source voltage, Vs > 0– D1 is on.– D2 is off.– The equivalent circuit is the same as that (b).– The voltage across the RL load is the same as the
source .• For a negative source voltage, Vs < 0
– D1 is off.– D2 is on.– The equivalent circuit is the same at that of (c).– The voltage across the RL load is zero.
AC‐DC Converter with RL Load and Freewheeling Diode
Introduction to Power Electronics by DMZ
• Since the voltage across the RL load is the same as the source voltage when the source is positive and is zero when the source is negative, the load voltage is a half‐wave rectified sine wave.
AC‐DC Converter with RL Load and Freewheeling Diode
Introduction to Power Electronics by DMZ
• When the circuit is first energized, the load current is zero and cannot change instantaneously.
• The current reaches periodic steady state after a few periods (depending on the L/R time constant).
AC‐DC Converter with RL Load and Freewheeling Diode
Introduction to Power Electronics by DMZ
• Steady-state load, source, and diode currents
AC‐DC Converter with RL Load and Freewheeling Diode
Introduction to Power Electronics by DMZ
Ex1
Introduction to Power Electronics by DMZ
• Determine the average load voltage and current, and determine the power absorbed by the resistor in the circuit, where R =2 ohm and L = 25 mH, Vm is 100 V, and the frequency is 60 Hz.
Solution Ex1
•
• adalah tegangankeluaran rata-rata
•
• Impedansi = Z = R+jωL• ω = 2x3.14x 60 = 376,8 • =
= 9,63 Ohm
•,
,
• Irms = Io = 3,307 A
Introduction to Power Electronics by DMZ
0π 2π 3π
Vm
ω
• Daya diserap beban• P = Irms
2R = 3.3072x 2= 21,87 Watt
Ex1
Introduction to Power Electronics by DMZ
Summary
Introduction to Power Electronics by DMZ
• Uncontrolled Half-wave rectifier with RL load and Freewheeling diode
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