CRE Film Capacitors in Renewable Energy

As the world accelerates its transition to renewable energy, both wind and solar power systems are experiencing exponential growth. With a focus on reducing carbon emissions and decreasing dependency on fossil fuels, the global demand for more efficient and compact energy solutions is at an all-time high. At the heart of these systems, film capacitors play a critical role in AC-DC and DC-AC conversion processes, ensuring reliability, efficiency, and long-term performance.

The Shift Toward Compact and Lightweight Designs

The renewable energy industry, particularly in the design of inverters for wind and solar power, is trending toward lighter and more compact systems. This shift directly impacts the design of DC-link capacitors, where space optimization and performance enhancement are key.

CRE film capacitors address this need through:

• Optimized internal space utilization: By employing advanced winding techniques and increasing electric field strength (V/µm), CRE capacitors achieve more compact designs without compromising performance.

• Thinner film technology: Thinner films enable capacitors to operate at the same nominal voltage while reducing size and weight, making them ideal for next-generation energy systems.

Solar Energy Applications

In solar power systems, efficiency and cost optimization are paramount. New inverter designs demand:

• Ultra-high efficiency, often reaching up to 98%, to maximize energy conversion.

• Extended maintenance cycles to minimize operational costs and downtime.

To meet these requirements, CRE film capacitors provide:

• Low ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance): These features reduce energy loss and improve overall efficiency.

• Support for higher operating frequencies, which enables compact and efficient inverter designs.

• Cost-effective standard solutions that balance performance and affordability.

Wind Energy Applications

Wind energy, especially in offshore high-power applications, presents additional challenges, including higher voltage requirements and weight constraints. CRE capacitors are designed to excel under these conditions:

• High nominal voltage capabilities to withstand the demands of offshore wind systems.

• Low ESR and ESL to minimize energy losses and maximize efficiency in power conversion.

• Lightweight and compact designs that reduce the overall weight of wind turbine systems, enhancing reliability and performance.

• High current density, critical for supporting increasing power demands.

Meeting Common Demands Across Renewable Systems

Both solar and wind energy applications share common needs for advanced capacitor technology:

• Higher current density to support increased power output.

• Low energy losses through reduced ESR and ESL.

• Compact and lightweight solutions to optimize system size, weight, and cost.

Why CRE Film Capacitors?

CRE film capacitors stand out as a superior choice in renewable energy applications, delivering:

• Exceptional reliability: Built for long-term performance in demanding environments.

• High efficiency: Enhanced power conversion with minimal energy loss.

• Compact design: Advanced materials and engineering reduce capacitor size without compromising specifications.

• Cost-effectiveness: Solutions that balance high performance with affordability.

Conclusion

As renewable energy systems continue to evolve, CRE film capacitors provide the essential foundation for optimizing performance, efficiency, and reliability. Whether in solar inverters pushing for ultra-high efficiency or wind turbines demanding higher voltage and current density, CRE capacitors meet the challenges of modern energy technology.

With a focus on innovation and sustainability, CRE film capacitors empower the renewable energy industry to achieve its goals of cleaner, greener, and more efficient power generation.

CRE Solution
AC-filter C3		DC-link C1		Snubber C2
AKMJ-MC	AKMJ-PS	DMJ-MC	DMJ-PS	SMJ-P	SMJ-PS
Voltage
330~850（VAC）	330~850（VAC）	450~2000（VDC）	450~2000（VDC）	630~3000 （VDC）
Capacitance
（3 phase) 3×10~200（UF）	1.5~30 (UF)	100~1500 (UF)	2.2~150 (UF)	0.1~4.7 (UF)
Standard: IEC-61071 IEC-60068