| 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.
 |
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. |
|
Photovoltaic/wind
hybrid with battery bank and diesel generator back-up.
