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A Novel Three-Phase Three-Leg AC/AC Converter Using Nine IGBTs

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This paper proposes a novel three-phase nine-switch ac/ac converter topology. This converter features sinusoidal inputs and outputs, unity input power factor, and more importantly, low manufacturing cost due to its reduced number of active switches. The operating principle of the converter is elaborated; its modulation schemes are discussed. Simulated semiconductor loss analysis and comparison with the back-to-back two-level voltage source converter are presented. Finally, experimental results from a 5-kVA prototype system are provided to verify the validity of the proposed topology.
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  ELECTRICAL PROJECTS USING MATLAB SIMULINK Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   For Simulation Results of the project Contact Us Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   A Novel Three-Phase Three-Leg AC/AC Converter Using Nine IGBTs ABSTRACT: This paper proposes a novel three-phase nine-switch ac/ac converter to    pology. This converter features sinusoidal inputs and outputs, unity input power factor, and more importantly, low manufacturing cost due to its reduced number of active switches. The operating principle of the converter is elaborated; its modulation schemes are discussed. Simulated semiconductor loss analysis and comparison with the back-to-back two-level voltage source converter are presented. Finally, experimental results from a 5-kVA prototype system are provided to verify the validity of the proposed topology. KEYWORDS:  1.   AC/AC converter 2.    pulse width modulation (PWM) 3.   reduced switch count topology SOFTWARE: MATLAB/SIMULINK  ELECTRICAL PROJECTS USING MATLAB SIMULINK Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   For Simulation Results of the project Contact Us Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   CIRCUIT DIAGRAM: Fig: 1 B2B 2L-VSC.   Fig: 2 Proposed nine switch ac to ac converter with a quasi dc link  ELECTRICAL PROJECTS USING MATLAB SIMULINK Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   For Simulation Results of the project Contact Us Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   EXPECTED SIMULATION RESULTS: Fig. 3.   Measured rectifier and inverter waveforms (CF-mode operation). (a) Input and output voltages. (b) Voltage spectrum. (c) Input and output currents.  ELECTRICAL PROJECTS USING MATLAB SIMULINK Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   For Simulation Results of the project Contact Us Gmail:   asokatechnologies@gmail.com ,  Website: http://www.asokatechnologies.in 0-9347143789/9949240245   Fig. 4. Measured waveforms and spectrum (VF mode oper    ation). (a) Input and output voltages. (b) Spectrum. Fig. 5. Measured waveforms when the inverter output frequency has a step increase from 30 to 120 Hz, while the rectifier input frequency remains at 60 Hz. (a) Input and output voltages. (b) Input and output currents.
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