Dr. Kai König, Dr. Marco Ulrich, ABB AG, Corporate Research Center Germany, Hannover Messe 2011, Forum Innovations for Industry, 07.04.2011 Vibration Energy Harvesting for Process Industry Applications
Energy harvesting Industrial and ambient sources Solar radiation Vibration Flow Heat www.micropelt.de www.hsg-imit.de April 13, 2011 Slide 2
Energy Harvesting Powered Sensors Autonomous (thermoelectric) Temperature Transmitter C April 13, 2011 Slide 6
Vision: Modular Energy Harvesting System Pick and combine wireless devices & harvesters Energy source Buffer(s) Power Management l/s Pa Devices & Sensors C April 13, 2011 Slide 7
Research Strategy Process Vibrations Vibration Harvester Vibrations Study Market Study VEH Requirements Harvester Test (Lab) Use Cases System Test (Lab) Harvester Tests in Sample Process Environment Low Power Devices System Tests in the Real World Power Management Apr 07 2011 Slide 8
Research Strategy Process Vibrations Vibration Harvester Vibrations Study Market Study VEH Requirements Harvester Test (Lab) Use Cases System Test (Lab) Harvester Tests in Sample Process Environment Low Power Devices System Tests in the Real World Power Management Apr 07 2011 Slide 9
Vibration Studies Our Sample Process Environment 2 tanks, one with precision balance 3 pumps, frequency-controlled drives: 37 kw, 1500.. 3000 RPM 11 kw, 1500.. 3000 RPM 4 kw, 1200.. 2800 RPM Temperature control (5.. 80 C) Measurement track or bypass Pressure, flow and temperature sensors Flows of [0.1.. 30 l/s] Apr 07 2011 Slide 10
Challenges Harvester Location Integrated in / near the sensor? at the vibration source? Small or high-quality motors weak vibration Frequency-controlled drives low speed weak vibration high speed strong vibration spectrum shift Dependence of vibration spectrum on: Flow configurations and valve positions Exact mechanical structure Medium, pressure, temperature Apr 07 2011 Slide 11
Vibration Studies in Sample Process Environment On a Sensor in the Process Feb 16th, 2011 Slide 13
Research Strategy Process Vibrations Vibration Harvester Vibrations Study Market Study VEH Requirements Harvester Test (Lab) Use Cases System Test (Lab) Harvester Tests in Sample Process Environment Low Power Devices System Tests in the Real World Power Management Apr 07 2011 Slide 16
Harvester Tests in the Lab Energy Harvester & Power Management 50 Hz vibration harvester on shaker at 50 Hz charging a 0.4 mah thin film battery (4.1V nominal voltage) via battery management Apr 07 2011 Slide 17
Research Strategy Process Vibrations Vibration Harvester Vibrations Study Market Study VEH Requirements Harvester Test (Lab) Use Cases System Test (Lab) Harvester Tests in Sample Process Environment Low Power Devices System Tests in the Real World Power Management Apr 07 2011 Slide 18
Harvester Tests in a Process Environment Harvester Mounting Locations Apr 07 2011 Slide 19
Research Strategy Process Vibrations Vibration Harvester Vibrations Study Market Study VEH Requirements Harvester Test (Lab) Use Cases System Test (Lab) Harvester Tests in Sample Process Environment Low Power Devices System Tests in the Real World Power Management Apr 07 2011 Slide 21
Conclusions Example Application Scenario 1 RPM [x 100] [mws] Wstored, 1mW [mws] P [mw] Wstored, 4mW [mws] Apr 07 2011 Slide 22 t [s]
Conclusions Vibration Harvesting on Frequency Controlled Motors Vibration Energy Harvesting delivers sufficient energy to power autonomous devices (up to 25 mw) in resonance Suitable for fixed-freq No output off resonance frequency Limited use if frequency is variable Difficult with frequency-controlled motors Power management required Energy buffering Sufficient time at high energy required Low power sensors Strongly dependent on the use case Apr 07 2011 Slide 24
Vision: Modular Energy Harvesting System Pick and combine wireless devices & harvesters Energy source Buffer(s) Power Management l/s Pa Devices & Sensors C April 13, 2011 Slide 25