ME 8843 Advanced Mechatronics. Instructor: Professor I. Charles Ume Power Rectifiers. Outline. Motivation Rectification Technologies Types of Rectification Rectification Circuits Applications. Motivation.
Instructor: Professor I. Charles Ume
AC Power Transmission Lines
From steel manufacturing plant in Germany
Diode Rectifier Modules
Half Wave Rectifier
Full Wave Rectifier
While output of the rectifiers is now DC (current only flows in one direction), output oscillates
Three-phase full-wave bridge rectifier circuit
Input and output voltages for three-phase rectifier
Industrial settings usually have 3-phase power available for machines
Rectifying 3-phase power results in DC voltage with less ripple
Input and output voltages for 3-phase rectifier
Half-wave rectifier circuit
Half-wave rectifier application: Two level lamp dimmer.
Full-wave rectifier, center-tapped design.
Full-wave center-tap rectifier: Top half of secondary winding conducts
during positive half-cycle of input, delivering positive half-cycle to load.
Full-wave center-tap rectifier: During negative input half-cycle, bottom half
of secondary winding conducts, delivering a positive half-cycle to the load.
Dual polarity full-wave center tap rectifier
Full-wave bridge rectifier.
Full-wave bridge rectifier: Electron flow for positive half-cycles
Full-wave bridge rectifier: Electron flow for negative half=cycles.
Alternative layout style for Full-wave bridge rectifier.
Three-phase full-wave bridge rectifier circuit.
Six-phase full-wave bridge rectifier circuit.
Three-phase AC and 3-phase full-wave rectifier output.
f: line frequency
Iload: Load Current
Vrip: Amplitude of ripple voltage
NOTE: Voltage rating of the capacitor must be > 1.4*Vout and large capacitors should have bleeder resistors for safety!
Rectified Radio Wave
6 Rectifier Diodes