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New Harbor
Joe Yarkin

Tracy Dahl
CH2M Hill Polar Services

New Harbor site 
New Harbor site with 500-Watt solar array and Bergey XL1 on 35-ft Rohn Tower
(click on image for larger version)
System Solar icon Wind icon Battery icon Generator icon Photovoltaic/wind hybrid with battery bank and diesel generator back-up.
Location New Harbor, Antarctica (77 34 38.4 S 163 31 05.5 E -51.80).
Description The New harbor power system was upgraded from an older diesel generator system to a hybrid system utilizing wind, solar, and generator power. Energy is stored in a 24VDC battery bank housed inside the generator shed.  High quality, true sine-wave, 120/240VAC power is continuously available throughout the camp in moderate amounts without running the generator.  When the battery bank is depleted the generator can be started to recharge the batteries, while simultaneously powering the camp loads.

Solar energy is converted to electricity via eight photovoltaic panels that are mounted on a manual tracker.  The array can be easily rotated toward the sun over the course of the day to maximize solar charging. Wind energy is harvested via a Bergey wind generator that is rated for 1 kW at 27 MPH wind speed. The energy is stored in a battery bank composed of twelve, 100-AH batteries in 24VDC configuration. AC power is available on demand through the two 2-kW Outback inverters over power cables L1 and L2. The cables L1 and L2 are 120VAC to ground and 240VDC to each other, or split phase. This power is sent to the Laboratory and the Jamesway in parallel. In the Jamesway, there is a Tri-metric totalizing battery meter that measures power going in and out of the batteries and the state of charge of the battery bank. Set in “Auto” mode, when battery voltage is low, generators are automatically started to charge batteries and supplement loads. The operator can also manually turn generator on when batteries are low, or electrical loads are high.

System specifications:
  • Solar panels -8 Solarex MSX-64s
  • Charge controller- Outback MX60 (MPPT) Maximum Power Point Tracking  60 amp charge controller
  • Batteries 12- East-Penn Deka 100AH Gel Cell deep cycle batteries in series / parallel configuration
  • Inverters-2 Outback FX 2000. 2kW rated sine wave inverters in series/parallel configuration for 120V/240V operation
  • Outback X240 autotransformer connected between inverters to optimize inverter performance
  • Outback Hub 4 stacking interface
  • Over current Protection:
    • Outback PSAC and PSDC enclosures with two 175 amp breaker/disconnects protecting each inverter.
    • 60 amp breaker between the wind generator and the batteries
    • Two 60 amp breaker/disconnects protecting the charge controller from the batteries and the solar panels on the DC side.
    • On the AC side there is a dual 50-A bypass breaker for powering system from generator directly and 50 AMP AC generator input.
    • The AC power out goes through a pair of 30-A breakers carrying out power to the camps power distribution boxes
  • Wind Generator: Bergey XL1, 1000 watt rated generator with Bergey control panel and 40 amp Filsnor diversion load.
  • Battery Power Monitor: Bogart Engineering, Trimetric TM-2020 with 500amp shunt connected to meter real net energy production and battery state of charge.
New Harbor power panel The Outback power panel consisting of battery bank on the bottom, with Bergey wind controller and a diversion load in the middle. The upper area has a solar charge controller, two Outback FX2000 inverters and both AC and DC over current protection devices.
Data Data not taken from this site.
Comms o communications devices are associated with this system.