Abstract:
This paper presents a voltage-balancing method for stacked multicell converters (SMCs) based on phase disposition pulsewidth modulation. A cost function is evaluated to s...Show MoreMetadata
Abstract:
This paper presents a voltage-balancing method for stacked multicell converters (SMCs) based on phase disposition pulsewidth modulation. A cost function is evaluated to select the optimum state from a pool of redundant possible ones at each voltage level. It is demonstrated that, if sawtooth carriers are used for modulation instead of standard triangular ones, significant reduction in the switching frequency and the associated power losses of the power devices can be achieved without affecting the voltage-balancing capability. Experimental results from a seven-level SMC laboratory prototype are provided to verify the proposed voltage-balancing method against linear and nonlinear loads, as well as under transient conditions.
Published in: IEEE Transactions on Industrial Electronics ( Volume: 62, Issue: 7, July 2015)
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- IEEE Keywords
- Index Terms
- Phase Disposition Pulsewidth Modulation ,
- Cost Function ,
- Pulse Width ,
- Transient State ,
- Power Loss ,
- Reduction In Frequency ,
- Switching Frequency ,
- Power Devices ,
- Voltage Levels ,
- Nonlinear Load ,
- Linear Load ,
- Stage 2 ,
- Fundamental Frequency ,
- Carrier Frequency ,
- Reference Signal ,
- Conduction Loss ,
- Modulation Index ,
- Switching States ,
- Switching Loss ,
- Total Harmonic Distortion ,
- Low Power Loss ,
- Capacitor Voltage Balancing ,
- Natural Balance ,
- Voltage Balancing ,
- Multilevel Converter ,
- Use Of Carriers ,
- Switching Period ,
- Output Voltage Levels ,
- Neutral Point Clamped ,
- Total Power Loss
- Author Keywords
- Author Free Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Phase Disposition Pulsewidth Modulation ,
- Cost Function ,
- Pulse Width ,
- Transient State ,
- Power Loss ,
- Reduction In Frequency ,
- Switching Frequency ,
- Power Devices ,
- Voltage Levels ,
- Nonlinear Load ,
- Linear Load ,
- Stage 2 ,
- Fundamental Frequency ,
- Carrier Frequency ,
- Reference Signal ,
- Conduction Loss ,
- Modulation Index ,
- Switching States ,
- Switching Loss ,
- Total Harmonic Distortion ,
- Low Power Loss ,
- Capacitor Voltage Balancing ,
- Natural Balance ,
- Voltage Balancing ,
- Multilevel Converter ,
- Use Of Carriers ,
- Switching Period ,
- Output Voltage Levels ,
- Neutral Point Clamped ,
- Total Power Loss
- Author Keywords
- Author Free Keywords