研究目的
To design and compare DC microgrids based on photovoltaic and fuel cell power generators at different voltage levels (24 V, 48 V, and 110 V) to determine the optimum voltage for system efficiency, voltage regulation, and cost.
研究成果
The 110 V DC microgrid provides the highest system efficiency (≈95% from boost converter), lowest cable losses, and lowest cost compared to 24 V and 48 V systems, making it the optimal choice for low-power applications. However, it shows lower CO2 reduction potential.
研究不足
The study used a fixed 3-meter cable length, which may not represent all real-world scenarios; only low-power DC loads up to 1000 W were considered, and safety aspects of higher voltages like 110 V were mentioned but not deeply analyzed.
1：Experimental Design and Method Selection:
The study involved designing and developing DC microgrids with PV (500 WP) and FC (1 kW) generators to operate DC loads at 24 V, 48 V, and 110 V. Buck-boost converters were used for 24/48 V systems, and boost converters for 110 V systems, based on the input voltage characteristics of the generators.
2：Sample Selection and Data Sources:
DC loads ranging from 250 W to 1000 W were used, with a 3-meter-long copper connecting cable for all tests.
3：List of Experimental Equipment and Materials:
PV generator (500 WP), FC generator (1 kW), buck-boost DC-DC converter, boost DC-DC converter, DC loads (LED lighting and DC fans), copper cables of various sizes (SWG 10 to 24).
4：4). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The microgrids were set up with generators connected to DC-DC converters and then to the DC bus and loads via cables. Performance was measured in terms of efficiency, voltage drop, cable loss, and cost.
5：Data Analysis Methods:
Data on output current, voltage drop, voltage regulation, cable loss, and efficiency were collected and compared across different voltage levels and loads using tables and graphs.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
