17876419. THREE-LEVEL DIRECT CURRENT CONVERTER, POWER SUPPLY SYSTEM, AND CHIP simplified abstract (HUAWEI TECHNOLOGIES CO., LTD.)
THREE-LEVEL DIRECT CURRENT CONVERTER, POWER SUPPLY SYSTEM, AND CHIP
Organization Name
Inventor(s)
Zhiqiang Xiang of Dongguan (CN)
THREE-LEVEL DIRECT CURRENT CONVERTER, POWER SUPPLY SYSTEM, AND CHIP - A simplified explanation of the abstract
This abstract first appeared for US patent application 17876419 titled 'THREE-LEVEL DIRECT CURRENT CONVERTER, POWER SUPPLY SYSTEM, AND CHIP
Simplified Explanation
The three-level direct current converter described in the patent application includes a flying capacitor, switch groups, a drive circuit, and a control circuit. The control circuit has an on-time generator that adjusts the output on-time signal based on the voltage deviation of the flying capacitor from half of the power supply voltage. The drive circuit uses the on-time signal to control the switch statuses of the switch groups, thereby adjusting the charging and discharging time of the flying capacitor. The voltage deviation is limited to a preset threshold.
- The patent describes a three-level direct current converter with a flying capacitor.
- The control circuit includes an on-time generator that adjusts the output on-time signal based on the voltage deviation of the flying capacitor.
- The drive circuit uses the on-time signal to control the switch statuses of the switch groups, adjusting the charging and discharging time of the flying capacitor.
- The voltage deviation is limited to a preset threshold.
Potential Applications
- Power electronics
- Renewable energy systems
- Electric vehicles
- Industrial automation
Problems Solved
- Efficiently adjusting the charging and discharging time of the flying capacitor
- Maintaining the voltage on the flying capacitor close to half of the power supply voltage
Benefits
- Improved control and stability of the three-level direct current converter
- Enhanced efficiency and performance of power electronics systems
- Increased reliability and lifespan of renewable energy systems and electric vehicles.
Original Abstract Submitted
The three-level direct current converter includes: a flying capacitor, a plurality of switch groups, a drive circuit, and a control circuit. The control circuit includes at least an on-time generator. When a voltage on the flying capacitor deviates from a half of a power supply voltage, the on-time generator changes a charging current of a capacitor of the on-time generator to adjust an output on-time signal, and outputs the on-time signal to the drive circuit. The drive circuit generates a drive pulse signal based on the on-time signal to drive switch statuses of the plurality of switch groups, to adjust charging time and discharging time of the flying capacitor, where an absolute value of a difference between the voltage on the flying capacitor and the half of the power supply voltage is less than or equal to a preset threshold.
