Power electronics Chapter 8 Composite Converters
Power Electron cs i 1 Chapter 8 Composite Converters PPoowwee rr EE ll eeccttrroo nn ii ccss
PEREC The concept of composite converter Composite converter Combination of two or more converters in cascaded connection Indirect ac to ac converters (AC-DC-AC converters) Composite converters ndirect dc to dc converters (Isolated dC to DC converters) 2
Power Electron cs i 2 The concept of composite converter The concept of composite converter Composite converter: Composite converter: Combination of two or more converters in cascaded Combination of two or more converters in cascaded connection connection Indirect AC to AC converters Indirect AC to AC converters (AC -DC -AC converters) AC converters) Composite converters Composite converters Indirect DC to DC converters Indirect DC to DC converters (Isolated DC (Isolated DC to DC converters) to DC converters)
8. 1 Indirect ac to Ac converters (AC-DC-AC converters) Classifications 4 According to type of the dc links Voltage-source type AC-DC-AC converters Current-source type 4 According to whether output voltage and frequency is variable: Variable voltage variable frequency WF AC-DC-AC converters (AC-DC-AC frequency converters) Constant voltage constant frequen (CVCF) 3
Power Electron cs i 3 8.1 Indirect AC to AC converters Indirect AC to AC converters (AC -DC -AC converters) AC converters) Classifications Classifications According to type of the DC links: According to type of the DC links: Voltage Voltage -source type source type AC -DC -AC converters AC converters Current Current-source type source type Variable voltage variable frequency Variable voltage variable frequency (VVVF) (AC -DC -AC frequency converters) According to whether output voltage and frequency is According to whether output voltage and frequency is variable: AC -DC -AC converters AC converters AC frequency converters) Constant voltage constant frequency Constant voltage constant frequency (CVCF) variable:
PEREC 8.1.1 Configurations of AC-DC-Ac converters Configurations with one-direction power flow AC AC AC AC A ource Load Source Load Voltage-source type Current-source type
Power Electron cs i 4 8.1.1 Configurations of AC Configurations of AC -DC -AC converters AC converters Configurations with one Configurations with one -direction power flow direction power flow AC Load AC Source AC Load AC Source Voltage Voltage -source type source type Current Current-source type source type
Configuration with regenerative energy dissipating circuit AC 木 AC 0 Source Load 4 Braking transistor and braking resistor 5
Power Electron cs i 5 Configuration with regenerative energy Configuration with regenerative energy dissipating circuit dissipating circuit AC Load AC Source V 0 R 0 Braking transistor and braking resistor Braking transistor and braking resistor