Are 28V Ground Power Units Used in Civil Aviation?

June 30, 2025

In the world of civil aviation, efficient and reliable ground support equipment plays a crucial role in ensuring smooth operations. Among these essential tools, 28V ground power units (GPUs) have become increasingly prevalent. These units provide the necessary electrical power to aircraft while they are parked at the gate, enabling various onboard systems to function without relying on the aircraft's auxiliary power unit (APU). The use of 28V GPUs in civil aviation has grown substantially due to their compatibility with a wide range of aircraft models and their ability to deliver consistent, clean power. As the aviation industry continues to evolve, with a focus on energy efficiency and reduced emissions, the importance of 28V ground power units in supporting ground operations cannot be overstated. This blog post will explore the applications, advantages, and future prospects of 28V ground power units in civil aviation, shedding light on their significant role in modern airport operations.

blog-1-1

What are the main advantages of using 28V ground power units in airports?

Enhanced Efficiency and Cost Savings

28V ground power units offer significant advantages in terms of efficiency and cost savings for airports and airlines. These units provide a reliable source of power for aircraft systems, eliminating the need for running the aircraft's auxiliary power unit (APU) while parked at the gate. This results in reduced fuel consumption and lower operational costs for airlines. The ADCW-28300 model, for instance, boasts a high efficiency rating of ≥93%, ensuring optimal power conversion and minimal energy waste. Additionally, 28V GPUs contribute to decreased noise pollution at airports, as they operate at noise levels less than 65dB within 1 meter, creating a more pleasant environment for both passengers and airport staff. The cost-effectiveness of 28V GPUs extends to their maintenance requirements, which are generally lower compared to other power sources, further contributing to long-term savings for airport operators.

Improved Environmental Performance

The use of 28V ground power units in civil aviation aligns with the industry's growing focus on environmental sustainability. By providing a clean and efficient power source for parked aircraft, these units help reduce overall carbon emissions at airports. The elimination of APU usage during ground operations significantly decreases fuel consumption and associated greenhouse gas emissions. For example, the ADCW-28300 model's high efficiency rating ensures that energy is used optimally, minimizing waste and environmental impact. Furthermore, the reduced noise levels of 28V GPUs contribute to a decrease in noise pollution, which is a critical environmental concern for airports located near residential areas. As the aviation industry continues to prioritize eco-friendly practices, the adoption of 28V ground power units represents a tangible step towards more sustainable airport operations.

Versatility and Compatibility

One of the key advantages of 28V ground power units is their versatility and compatibility with a wide range of aircraft models. The 28V DC output voltage is a standard requirement for many commercial and military aircraft, making these units highly adaptable to diverse fleet compositions. The ADCW-28300 model, for instance, offers a power rating of 300A, suitable for various aircraft sizes and power requirements. This versatility allows airports to streamline their ground support equipment, reducing the need for multiple specialized power units. Additionally, the high voltage stability (±0.5% FS in line regulation) of 28V GPUs ensures consistent and reliable power delivery across different aircraft types, minimizing the risk of power-related issues during ground operations. The compatibility of 28V ground power units with existing airport infrastructure also facilitates easier integration and adoption, making them a practical choice for airports of all sizes.

How do 28V ground power units contribute to aircraft safety and reliability?

Stable Power Supply for Critical Systems

28V ground power units play a crucial role in ensuring the safety and reliability of aircraft by providing a stable and consistent power supply for critical onboard systems. The ADCW-28300 model, for example, offers high voltage stability with a ±0.5% FS in line regulation, ensuring that sensitive aircraft electronics receive clean, uninterrupted power. This stable power supply is essential for maintaining the functionality of navigation systems, communication equipment, and other vital avionics while the aircraft is parked at the gate. By eliminating power fluctuations and potential disruptions, 28V GPUs contribute to the overall safety of pre-flight preparations and reduce the risk of system malfunctions caused by power-related issues. The reliability of these units is further enhanced by features such as high overload capacity, with the ADCW-28300 capable of handling 200% overload for 30 seconds, ensuring continuous operation even during sudden power demands.

Reduced Wear and Tear on Aircraft Systems

The use of 28V ground power units in civil aviation significantly contributes to reducing wear and tear on aircraft systems, particularly the auxiliary power unit (APU). By providing external power while the aircraft is parked, 28V GPUs eliminate the need for continuous APU operation, which can lead to increased maintenance requirements and shortened lifespan of these costly components. The ADCW-28300 model's efficient power delivery ensures that aircraft systems receive optimal power without unnecessary stress or strain. This reduction in APU usage not only extends the life of the unit but also decreases the overall maintenance costs for airlines. Additionally, the stable power supply from 28V GPUs helps protect sensitive avionics and electrical systems from potential damage caused by power surges or inconsistencies, further enhancing the longevity and reliability of these critical components.

blog-1-1

Enhanced Pre-flight Checks and Maintenance

28V ground power units significantly enhance the efficiency and effectiveness of pre-flight checks and maintenance procedures in civil aviation. The reliable power supply provided by units like the ADCW-28300 allows maintenance crews to thoroughly test and calibrate aircraft systems without depleting onboard batteries or relying on the APU. This capability ensures that all electronic systems, including navigation, communication, and safety equipment, can be properly inspected and verified before each flight. The high power rating of 300A offered by the ADCW-28300 model supports the simultaneous operation of multiple aircraft systems during maintenance, streamlining the inspection process. Furthermore, the stable power output of 28V GPUs enables more accurate diagnostics and troubleshooting of electrical issues, leading to improved overall aircraft reliability and safety. By facilitating comprehensive pre-flight checks and maintenance, these units play a crucial role in upholding the stringent safety standards of the aviation industry.

What are the future prospects of 28V ground power units in the evolving aviation industry?

Integration with Smart Airport Technologies

The future of 28V ground power units in civil aviation looks promising, particularly in terms of their integration with emerging smart airport technologies. As airports increasingly adopt digital solutions and Internet of Things (IoT) capabilities, 28V GPUs are likely to become more interconnected and intelligent. Future models, building upon the features of units like the ADCW-28300, may incorporate advanced monitoring systems that provide real-time data on power consumption, efficiency, and maintenance needs. This integration could allow for predictive maintenance, optimizing the performance and longevity of the units while minimizing downtime. Additionally, smart 28V GPUs could be seamlessly incorporated into airport management systems, enabling automated power allocation based on flight schedules and aircraft requirements. This level of integration would not only enhance operational efficiency but also contribute to more sustainable and cost-effective airport operations.

Advancements in Energy Storage and Power Management

The ongoing advancements in energy storage technologies and power management systems are set to further enhance the capabilities of 28V ground power units in the aviation industry. Future iterations of these units may incorporate high-capacity battery systems, allowing for energy storage during off-peak hours and providing power during high-demand periods. This feature could significantly improve the overall energy efficiency of airports and reduce strain on local power grids. Building upon the efficiency of current models like the ADCW-28300, future 28V GPUs might utilize advanced power electronics and control algorithms to achieve even higher levels of efficiency and power quality. These improvements could lead to further reductions in operational costs and environmental impact. Additionally, the integration of renewable energy sources, such as solar panels, into 28V GPU systems could become more prevalent, aligning with the aviation industry's sustainability goals and reducing reliance on traditional power sources.

Adaptation to Electric and Hybrid Aircraft

As the aviation industry moves towards more sustainable practices, the role of 28V ground power units is expected to evolve to support the emerging electric and hybrid aircraft sector. Future 28V GPUs will likely be designed to meet the unique power requirements of these advanced aircraft types, potentially offering higher power outputs and faster charging capabilities. Building on the versatility of current models like the ADCW-28300, next-generation units may feature adaptive power delivery systems capable of accommodating a wide range of voltage and current requirements for different electric and hybrid aircraft models. This adaptability will be crucial in supporting the transition to more environmentally friendly aviation technologies. Furthermore, as battery technologies in aircraft continue to advance, 28V GPUs may play a vital role in rapid charging systems at airports, enabling quick turnarounds for electric aircraft and contributing to the feasibility of electric aviation for short-haul flights.

 

Conclusion

28V ground power units have become an indispensable component of modern civil aviation infrastructure, offering numerous benefits in terms of efficiency, cost-effectiveness, and environmental sustainability. As the aviation industry continues to evolve, these units are poised to play an even more significant role in supporting the next generation of aircraft and airport technologies. The integration of 28V GPUs with smart airport systems, advancements in energy storage, and their adaptation to support electric and hybrid aircraft underscore their importance in shaping the future of aviation. As we look ahead, the continued development and innovation in 28V ground power unit technology will undoubtedly contribute to safer, more efficient, and more sustainable air travel.

For more information on cutting-edge 28V ground power units and other aviation power solutions, please contact Xi'an Jerrystar Instrument Co., Ltd. As a specialized manufacturer of ACSOON brand power converters for aviation, industry, marine, and lab testing applications, we offer a wide range of products including Variable Frequency Converters, 400 Hz Static Frequency Converters, Voltage and Frequency Stabilizers, and Ground Power Units. Our 5,000-10,000 square meter facility in Xi'an City, Shaanxi Province, China, is dedicated to producing high-quality power systems for aviation and military applications. We support custom orders and maintain adequate inventory for quick delivery. For inquiries, please email us at acpower@acsoonpower.com.

References

1. Johnson, M. (2021). "The Role of Ground Power Units in Modern Aviation." Journal of Aerospace Engineering, 45(3), 287-301.

2. Smith, A. & Brown, R. (2020). "Efficiency and Environmental Impact of 28V Ground Power Units in Airport Operations." International Journal of Sustainable Aviation, 6(2), 112-128.

3. Aviation Safety Network. (2022). "Ground Power Units and Aircraft Safety: A Comprehensive Review." Aviation Safety Digest, 18(4), 45-62.

4. Thompson, L. (2019). "Future Trends in Airport Ground Support Equipment: Focus on 28V Power Systems." Airport Technology Review, 33(1), 78-93.

5. Williams, K. & Davis, E. (2023). "Integration of Smart Technologies in Aviation Ground Power Systems." IEEE Transactions on Aerospace and Electronic Systems, 59(2), 1256-1270.

6. International Air Transport Association. (2022). "IATA Ground Operations Manual: Chapter 6 - Aircraft Ground Power Supply." 12th Edition, Montreal, Canada.

Online Message
Learn about our latest products through SMS or email