Transcript Honeywell_Green

 Honeywell.com
Solar Energy Company Needs and Challenges
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Customer Needs (Inverter Manufacturers and Solar Panel Installers)
1. PV solar panel manufacturers – not our focused customers
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Three technologies are competing for cost-leadership
– Silicon-wafer-based photovoltaics
– Thin-film PVs
– Concentrated solar thermal power
2. Equipment/instrument manufacturers
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Improve the efficiency of power generation
Maintain stable output of electricity vs. time and temperature
Prevent voltage spikes
3. Solar panel installers
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Maximize efficiency of power generation by
tracking the sun
Prevent the panel from overheating - spikes in
voltages above safe levels for their inverters
when the panel temperatures get too high
Identify the location of bad cells, shorts in
wiring caused by corrosion
Key Challenges
– Harsh environment
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Sensor and Switch Solutions for Solar
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Wind Turbine Manufacturer Needs and Challenges
• Customer Needs: (Wind turbine manufacturers and component suppliers)
– Decrease cost of energy to improve ROI (6~8 cents/kWh vs. 5 cents for
coal-fired plants)
– Efficient turbines
– Increase reliability of whole system
– Increase service intervals for off-shore applications
– Minimize downtime (e.g., GE - 15% in 2002 to 3% in 2007)
– Reduce maintenance costs
– Durable wind turbines
• Key Challenges
– Reliable, continuous speed measurement of
blades at low speed
– Blade stress and premature fracture/failure
– Condensation inside the blades
– Harsh environments
– Gearbox failure
– Lightning
– Vibration
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Sensor and Switch Solutions for Wind Energy
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Limit Switch Potential Applications
Twist Detection
Momentary rope
pull limit switch
used to detect
rotational twist
Vibration in Nacelle
Blade Position
GLS Limit Switches available with a wide
variety of options including low energy for PLC
interfacing. Contacts incorporate positive break
contacts which ensure the contacts break even
in the event of a welded contact. These types of
switches can be used to detect the BLADE limit.
They can also be applied to Rotor Lock maintenance
applications.
Locked Rotor
Low cost vibration detection
is possible with this cat’s whisker
switch – invert the switch, attach a
suitable weight and it is possible to
detect extreme vibration conditions
that may otherwise damage the
mechanism
A GLS Switch can be used for maintenance lockout
of the rotor
Tower Man Lift
A GLS limit switch can be used to detect floor positioning; GK key
Safety switches on the lift gates doors
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