Traditional methods to connect the solar panels and batteries to a high-voltage DC microgrid require multiple converters or complex three-winding transformers. This leads to significant power losses, reduced system performance as well as introduces the challenge of managing the intermittent nature of solar energy and ensuring a stable power supply, especially during grid outages. Hence, the need for a more streamlined and efficient approach to integrating solar energy and storage systems with DC microgrids.
This invention offers an efficient way to connect solar panels and batteries to a high-voltage DC microgrid. Using a two-winding high-frequency transformer, it reduces power losses and simplifies the setup. The multiport converter ensures maximum power extraction from solar panels, efficient battery charging, and stable 380V DC microgrid voltage. It operates independently if needed, providing reliable power to local loads. With single-phase and three-phase configurations, it enhances the efficiency and flexibility of solar energy systems, suitable for residential, commercial, and utility applications.
- Two-Winding High-Frequency Transformer instead of a conventional three-winding one, reducing power losses and increasing efficiency. This makes it ideal for residential and commercial solar power systems
- Direct Power Transfer: Connecting both the battery and solar PV panels to the primary winding through power electronic switches and inductors, enables direct power transfer without transformer windings. This lowers energy losses and enhances system performance for uninterrupted microgrid power supply
- High-Efficiency Power Conversion: Connecting the secondary winding to power electronic switches that convert high-frequency AC into DC, ensures efficient power conversion and stable DC microgrid voltage. This is suitable for utility-scale solar farms and industrial microgrids
- Maximum Power Point Tracking (MPPT): The converter can extract maximum power from solar PV panels and control battery charging, enhancing solar power utilization and battery management. This ensures maximum energy efficiency and reliability, especially beneficial for remote and off-grid systems
- Islanded Mode Operation: Can operate independently of the grid, maintaining power supply to local loads. This provides reliable power in isolated or emergency situations, useful for remote areas and backup power systems
- Stable DC Microgrid Voltage: Stable DC microgrid port voltage at 380V, regardless of varying conditions, ensures consistent power quality. This is critical for sensitive industrial and commercial applications
- Configurable Power Levels: Being available in single-phase and three-phase configurations, allows adaptation to different power requirements. This offers scalability and flexibility for various applications, from residential setups to high-power industrial needs Individual
- Solar Panel MPPT:Connecting multiple solar PV panels with individual maximum power point tracking, improves the efficiency of solar power extraction. This enhances overall system efficiency, particularly in large solar installations
Offers flexibility with single-phase and three-phase configurations, accommodating various power levels and configurations. It has demonstrated improved efficiency in maximum power point tracking compared to traditional methods, enhancing overall system performance.
- Reduces reliance on fossil fuels and mitigates climate change effects
- Enhances energy accessibility and reliability for communities and industries
- Promotes sustainability by optimizing solar energy utilization and reducing power losses
- Contributes to a cleaner and more sustainable energy future
Residential, Commercial, Utility-scale, Industrial
Residential solar power systems, commercial solar power systems, utility-scale solar farms, industrial microgrids, remote and off-grid power systems, backup power systems, sensitive industrial applications, large solar installations
201921013809
469375