AC to AC Voltage Converters - Power Electronic Module 4

• Lesson 26 AC to AC Voltage Converters, objectives: AC-AC power conversion topologies at fixed frequency ~ Power converter options available for the conversion ~ Ability to formulate equations describing the current waveform for the PAC ~ Ability sketch the current waveform by observation of the circuit ~ Ability to assess the performance of the converter of the topologies. contents: [ Operation with resistive loads ~ Power Factor ~ Operation with inductive loads ~ AC-AC Chopper ~ PAC as a static switch ]
• Lesson 27 Three-phase AC Regulators, objectives: The circuits used for the three-phase ac regulators (ac to ac voltage converters) ~ The operation of the above circuits with three-phase balanced resistive (R) load, along with the waveforms ~ The important points of comparison of the performance with different types of circuits. contents: [ Three-phase AC Regulators ~ Three-phase Delta-connected AC Regulator with Balanced Resistive Load ~ Comparison of the Different Circuits used for Three-phase AC Regulators ]
• Lesson 28 Phase Angle Control in Triac-based Single-phase AC Regulators, objectives: The circuit used for the phase angle control in triac-based single-phase ac regulators (ac to ac voltage converters) ~ The operation of the various blocks used in the circuit, along with the waveforms ~ The harmonic analysis of the output voltage of a single-phase ac regulator with resistive load. contents: [ Phase Angle Controller Circuit for Triac-based Single-phase AC Regulator ~ TRIAC ~ DIAC ~ Harmonic Analysis of the Output Voltage Waveform ~ ]
• Lesson 29 Introduction to Cyclo-converters, objectives: The cyclo-converter circuits - basic principle of operation ~ The circuit for the single-phase to single-phase cyclo-converter using thyristors ~ The operation of the above cyclo-converter circuit, along with the voltage waveforms. contents: [ Cyclo-converter Basic Principle of Operation ~ Single-phase to Single-phase Cyclo-converter ~ Discontinuous load current ~ Continuous load current ~ Advantages and Disadvantages of Cyclo-converter ~ Advantages and Disadvantages of DC Link Converter ]
• Lesson 30 Three-phase to Single-phase Cyclo-converters, objectives: The three-phase to single-phase cyclo-converter circuit, using two three-phase full-wave thyristorised bridge converters ~ The operation of the above cyclo-converter circuit, along with the voltage waveforms. contents: [ Three-phase to Single-phase Cyclo-converter ~ Circulating Current Mode of Operation ~ Cyclo-converter, using two three-phase half-wave converters ]
• Lesson 31 Three-phase to Three-phase Cyclo-converters, objectives: The three-phase to three-phase cyclo-converter circuit, using six three-phase half-wave thyristorised converters ~ The operation of the above cyclo-converter circuit ~ The analysis of the cyclo-converter output waveform. contents: [ Three-phase to Three-phase Cyclo-converter ~ Analysis of the Cyclo-converter Output Waveform ]
• Lesson 32 Control Circuit for Three-phase to Three-phase Cyclo-converters, objectives: The control circuits used for the three-phase to three-phase cyclo-converters using two three-phase converters, to generate the firing pulses for the thyristors ~ The functional blocks, including the circuit and waveforms. contents: [ Control Circuit for Cyclo-converters ~ Synchronising Circuit ~ Reference Voltage Sources ~ Logic and Triggering Circuit ~ Circuit for Converter Group Selection ]

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