Wind Turbine UPS Retrofit Solutions

from LICAP Technologies

LICAP Technologies has partnered with Windurance LLC to develop an ultracapacitor retrofit solution to replace the existing battery-based energy storage and charger system in GE 30Nm & 20Nm wind turbine pitch battery boxes. It is designed as a “drop in” replacement not requiring any modification to the pitch control system box or operating system. The ultracapacitor modules and capacitor charger unit (CCU) are common across the different pitch box iterations with only harness, bracket & mounting accommodations.


Key Retrofit Components


LICAP Ultracapacitor Energy Storage Module: SM0500-016-GER

Capacitance Rated1 500F
Capacitance Tolerance -0/+20%
Voltage Rated 16V DC
Voltage Surge2 17V DC
ESR (DC) – maximum initial 1.8mΩ
Operating temperature range -40℃ to +65℃
Storage temperature range -40℃ to +70℃
Windurance charging unit

Windurance Capacitor Charging Unit 700-70004, 700-70005, 700-70006

Input Voltage 230Vac +/- 10%, 299Vac max, @ 1A
Frequency 47Hz to 63Hz
Output Current 3A max
Power 180W max
Voltage 20Nm w/4 modules 58V, 30Nm w/6 modules 87V
Communication Physical layer, isolated RS485, 9600 baud 2 wire, protocol compatible with GE 20Nm and 30Nm battery charging systems
Module Voltage Sensing Individual and total stack sensing

LICAP Technologies Inc. is a world-class manufacturer of ultracapacitor and lithium-ion capacitor products with market leading performance. The key
element of our product performance is the industry leading dry electrode technology. LICAP’s Activated Dry Electrode combines manufacturing efficiency with innovative fabrication methods that results in outstanding ESR, Capacitance, and Life Cycle performance characteristics. At LICAP, we also conduct R&D to identify innovative new materials and processes to improve product performance and reduce overall costs. Our primary research center, electrode production facility and USA Headquarters is located at Sacramento, CA USA. Ultracapacitor product R&D and production are conducted at our LICAP facility in Tianjin, China.

Windurance logo

Windurance LLC designs and delivers performance-optimized wind turbine blade pitch technologies and power conversion equipment. In operation for more than 20 years, Windurance has accumulated vast knowledge, experience and a reputation for high performance products that consistently meet the needs of customers in the Wind Energy market. Windurance has an installed base of products in wind turbines totaling 3GW and leverages Turbine Availability Science™ to engineer optimum blade pitch control systems and significantly increase the amount of time a wind turbine is available to power your project.

Learn more about the LICAP Wind Retrofit Solution

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