Abstract:
To enable next generation robotic space exploration, innovations in the area of high step-down voltage converters is necessary. This work explores the use of multilevel h...Show MoreMetadata
Abstract:
To enable next generation robotic space exploration, innovations in the area of high step-down voltage converters is necessary. This work explores the use of multilevel hybrid switched-capacitor power converters which have unique advantages in mass-critical and harsh radiation space environments. A composite converter topology is presented which utilizes two different hybrid switched-capacitor converters in a partial power processing system. First, a fixed-ratio capacitively-isolated resonant Dickson converter is designed for a high step-down conversion ratio and to process the majority of the system power. In addition, a flying capacitor multilevel (FCML) converter is designed to provide regulation over a wide range of input voltages. The optimization of each converter is discussed, with careful attention dedicated to the minimization of passive component mass. The hardware results for each converter and the full composite system are presented, showcasing a system efficiency of over 96% for a nominal 15:1 conversion ratio with regulation capability.
Published in: IEEE Open Journal of Power Electronics ( Volume: 6)
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Switches ,
- Capacitors ,
- Regulation ,
- Inductors ,
- Topology ,
- Optimization ,
- ISO ,
- Capacitance ,
- Stress ,
- Voltage control
- Index Terms
- Dcdc Converter ,
- Space Applications ,
- Hybrid Switched-capacitor ,
- High Voltage ,
- Great Power ,
- High Conversion ,
- Input Voltage ,
- Conversion Ratio ,
- Space Environment ,
- Passive Components ,
- Area Of Innovation ,
- Multilevel Converter ,
- Regulation Capability ,
- Resonant Converter ,
- High Conversion Ratio ,
- Total Mass ,
- Energy Density ,
- Resonance Frequency ,
- Duty Cycle ,
- Printed Circuit Board ,
- Converter Operation ,
- Switch Voltage Stress ,
- Specific Energy Density ,
- Core Loss ,
- Buck Converter ,
- Capacitor Voltage Ripple ,
- Peak Efficiency ,
- Maximum Voltage ,
- Blocking Voltage ,
- Real Components
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Switches ,
- Capacitors ,
- Regulation ,
- Inductors ,
- Topology ,
- Optimization ,
- ISO ,
- Capacitance ,
- Stress ,
- Voltage control
- Index Terms
- Dcdc Converter ,
- Space Applications ,
- Hybrid Switched-capacitor ,
- High Voltage ,
- Great Power ,
- High Conversion ,
- Input Voltage ,
- Conversion Ratio ,
- Space Environment ,
- Passive Components ,
- Area Of Innovation ,
- Multilevel Converter ,
- Regulation Capability ,
- Resonant Converter ,
- High Conversion Ratio ,
- Total Mass ,
- Energy Density ,
- Resonance Frequency ,
- Duty Cycle ,
- Printed Circuit Board ,
- Converter Operation ,
- Switch Voltage Stress ,
- Specific Energy Density ,
- Core Loss ,
- Buck Converter ,
- Capacitor Voltage Ripple ,
- Peak Efficiency ,
- Maximum Voltage ,
- Blocking Voltage ,
- Real Components
- Author Keywords