Solid-State Transformer Power Conversion

Power Conversion

Power conversion is a crucial aspect of SST (Solid-State Transformer) power sharing. The main objective is to convert the AC power from the grid or renewable sources to DC power for efficient processing and distribution.

Key Components:

• Power Electronic Converters (PECs): These converters are responsible for converting AC power to DC power. They are typically composed of power semiconductor devices, such as IGBTs (Insulated Gate Bipolar Transistors) or MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors).
• DC-DC Converters: These converters are used to regulate the DC output voltage and current to meet the requirements of the load or energy storage system.

Power Conversion Topologies:

• Single-Stage Conversion: This topology involves a single power conversion stage, where the AC power is directly converted to DC power using a single PEC.
• Multi-Stage Conversion: This topology involves multiple power conversion stages, where the AC power is first converted to an intermediate voltage or current, and then converted to the final DC output.

Power Conversion Techniques:

• Pulse-Width Modulation (PWM): This technique involves modulating the width of the switching pulses to control the output voltage and current.
• Resonant Conversion: This technique involves using resonant circuits to achieve high-frequency power conversion with reduced losses.

Advantages:

• Higher Efficiency: SST power sharing with power conversion enables higher efficiency compared to traditional AC-AC power conversion.
• Improved Power Quality: The power conversion stage can improve power quality by regulating the output voltage and current.
• Flexibility: The power conversion stage can be designed to accommodate different input voltage and frequency ranges, making it suitable for various applications.