Honeywell Proprietary

Honeywell.com

1

• Customer Needs (Inverter Manufacturers and Solar Panel Installers)1. PV solar panel manufacturers – not our focused customers

• Three technologies are competing for cost-leadership – Silicon-wafer-based photovoltaics– Thin-film PVs– Concentrated solar thermal power

2. Equipment/instrument manufacturers • Improve the efficiency of power generation• Maintain stable output of electricity vs. time and temperature• Prevent voltage spikes

3. Solar panel installers• 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

Solar Energy Company Needs and Challenges

Honeywell Proprietary

Honeywell.com

2

Sensor and Switch Solutions for Solar

Honeywell Proprietary

Honeywell.com

3

• 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

Wind Turbine Manufacturer Needs and Challenges

Honeywell Proprietary

Honeywell.com

4

Sensor and Switch Solutions for Wind Energy

Honeywell Proprietary

Honeywell.com

5

Momentary rope pull limit switch used to detect rotational twist

GLS Limit Switches available with a widevariety of options including low energy for PLC interfacing. Contacts incorporate positive break contacts which ensure the contacts break evenin the event of a welded contact. These types ofswitches can be used to detect the BLADE limit.They can also be applied to Rotor Lock maintenanceapplications.

Low cost vibration detectionis possible with this cat’s whiskerswitch – invert the switch, attach asuitable weight and it is possible to detect extreme vibration conditions that may otherwise damage themechanism

Blade Position

Twist Detection

Vibration in Nacelle

Limit Switch Potential Applications

Tower Man Lift A GLS limit switch can be used to detect floor positioning; GK key Safety switches on the lift gates doors

Locked RotorA GLS Switch can be used for maintenance lockout of the rotor