Solar & Wind Inverter Capacitor Solution

Application

Description

Complete DC-Link and AC filter capacitor solution for solar PV inverters and wind turbine converters using Faratronic high-performance film capacitors.

Core Advantages

100,000+ Hour Life Ultra-long lifetime matches solar panel warranty

High Ripple Current Handles high ripple without excessive heating

Outdoor Rated Designed for harsh outdoor environments

25-Year Warranty Capacitor lifetime matches system design life

Recommended Bill of Materials (BOM)

Item	Part Number	Description	Quantity	Datasheet
1	C3D3K205K6AHA01	20uF 600V DC-Link capacitor	4	📄 Download
2	C3P3K506K11AHA01	50uF 1100V AC filter capacitor	3	📄 Download

Applications

Solar PV string inverters

Solar central inverters

Wind turbine converters

Energy storage inverters

Grid-tie inverters

Technical Specifications

D C- Link Voltage

600V-1500V

A C Filter Voltage

275V-690V

Lifetime

100,000 hours @ 85°C

Temperature Range

-40°C to +85°C

Ripple Current

Up to 50A RMS

Customer Success Stories

Solar Inverter Manufacturer

Renewable Energy |

Challenge

Needed capacitors with 25-year lifetime for solar inverter warranty.

Solution

Implemented Faratronic film capacitors with 100,000 hour rated lifetime.

Results

Achieved 25-year projected lifetime
Zero capacitor failures in 5 years
Reduced warranty claims by 90%

FAE Expert Insights

Dr. Chen Wei

Senior FAE - Renewable Energy

15 years

Professional Insights

Renewable energy applications require capacitors that can last the entire system life. Film capacitors are the only technology that can reliably achieve 25-year lifetimes in inverter applications.

Key Takeaways

Film capacitors essential for 25-year life
Ripple current derating critical for longevity
Thermal management extends capacitor life
Outdoor rating required for solar applications

Ready to Implement This Solution?

Contact our FAE team for design support and quotes

Frequently Asked Questions

Why are film capacitors preferred for solar inverters?

Film capacitors offer 100,000+ hour lifetime compared to 10,000-20,000 hours for electrolytic capacitors. This 10x lifetime advantage is essential for solar inverters requiring 25-year operation. Film capacitors also handle higher ripple currents, operate at higher temperatures, and don't suffer from electrolyte dry-out. The self-healing property of metallized film capacitors provides additional reliability benefits.

Use film capacitors for any inverter requiring >50,000 hour lifetime. Contact FAE for specific recommendations.

What ripple current can Faratronic capacitors handle?

Faratronic DC-Link capacitors can handle ripple currents from 10A to 100A RMS depending on size and voltage rating. The C3D series typically handles 20-50A RMS at 85°C. For higher ripple currents, multiple capacitors can be paralleled. Always derate the rated ripple current by 50% for 25-year lifetime. Temperature significantly affects ripple capability - every 10°C reduction doubles the allowable ripple current.

Calculate required ripple current, then select capacitor with 2x margin. Contact FAE for ripple current calculations.