vibrational energy harvester system integration use cases

Vibrational energy harvester system integration use cases & commercialization considerations

Presented By Keith Abate/Roy Freeland, Perpetuum Ltd.

Keith.abate@Perpetuum.com Roy.freeland@Perpetuum.com

Industry Session 5: Energy Harvesting

Tuesday, March 6, 2018

Introduction

• Wireless Sensor Nodes (WSN) have exceptional benefits for IOT

• Power with Batteries or Energy Harvesters• Maintenance Free Energy Harvesters are viable in

many applications • EH eliminates the reliability and maintenance

issues of batteries• Examples of successful high volume applications

I.o.T. Characteristics

• Sensor• Microprocessor• Self Powered - Energy Harvester (no batteries)• Mobile Platform (to make it more difficult)• Wireless Data Transmission to Cloud Server• Automatic alarms• Information available over the internet

Energy Harvesting Requirements

• Suitable source of energy to be harvested• Vibration• Light• Heat• Transmitted Power

• Power Management• Extraction of Power from Harvester• Energy Used by WSN

• Duty Cycle Energy Storage

Example Installations – GE, Emerson WSNs

mW to Monitor MW - Power Generation Plant

Wireless Sensor Node

Harvester

0

5

10

15

20

25

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32

Bat

tery

Lif

e (Y

ear

s)

Update Rate (Secs)

With Harvester

Battery Life (Derated)

Battery Life (Max)

Impact of Using Harvesters

Important Improvements using Energy Harvesters

No battery changes needed for 2 sec Update Rates

Battery life increases from under 2.5 to 15 years @ 1 sec Update Rates

System Design Steps

• Select Energy Source• Thermal• Vibration• Solar • etc.

• Determine Power Required• Duty Cycle Energy/Frequency

• Laws of Physics?

Harvester Interchangeability

• WSNs can be powered by different types of EH• Needed Interchangeability

• Isa 100.18 Power Sources for WSNs• Now IEC 62952Power sources for a wireless

communication device –• Part 3: Generic energy harvesting adapter module

published June 2017

Intelligent Power Module

Standard OEM Battery Module

(Emerson)

Energy Harvesting Adaptor Module

Integrate GEHAM into OEM Battery

Module

Intelligent Power Module (IPM)

• Capability: Battery powered WSN’s to use external power sources• Flexible Voltage: Wide range of input voltage levels: 8V – 24V.• Power Available: Integrated robust capacitive storage• Intelligent: Intelligent Power Management circuitry• Safe: Intrinsic safety designed in. Zone 0, Class 1 Division 1• Convenient: Same form, fit & function as original OEM battery module• Economics: Eliminate battery change costs & logistics for > 10 years

Enables interface of WSN wireless transmitter to multiple external energy harvesting sources and 24V DC power.

Power Puck® Energy Harvesters

Thermoelectric power

solutions for

Emerson Rosemount 3051S Transmitters

© 2013 Perpetua Power Source Technologies, Inc.

Power Puck®

Model 9-IS

Thermal Harvester Applications

Design Issues

• Extracting Sufficient Power• Max Power Point Tracking• Rectification• Impedance

• Energy storage• Charge/discharge cycle life• Storage life • Capacity • Leakage • Temperature range

Challenging Application - Trains

Wireless Sensor Node:Vibration &Temp SensorsEnergy HarvesterMicroprocessorWireless Transmitter

Objective – Condition Based Maintenance

Higher Power Implications

Mature Energy Harvesting Technology High harvested power

Reliability in high shock environment

High power enables Rich Data Frequent measurements to give better trending for

fast & accurate fault identification

Margin for when train is slow moving of stationary

Better positional accuracy

Better safety and reliability of the rail network

High power provides Future Proofing Provision of channel for additional 3rd party sensors

More data transmission to server allows better algorithm development

Spare power for future applications

16

High Power

Rich Data

Best Safety & Reliability

Future Proofing

Communications

17

Wireless Sensor Node

Data Concentrator (DC)

Data Download Via Cellular Network

PerpetuumAlgorithms

Simple, Actionable

Customer Alerts

Simple Display of Key Information

18

Key Data on Bearing, Wheel

etc

Colour coded Display

GPS Data

Bearing Degradation

3 Months

Track Features

Rail Break

Dip in Track Rail twist

Result of

Tamping Works

Track Dip

Live Monitoring on Trains

Axle Bearings

Wheels

Gearboxes

Traction Motors

Track

Cows

Energy Harvesting

• Now mature technology• High Volume Applications• Maintenance Free I.o.T.• Keys to Success

• Adequate Power Generation• Management of power• Storage of Energy

Cow on Track – Train in Field

0

2

4

6

8

10

12

7/26/2015 21:31 7/26/2015 21:33 7/26/2015 21:34 7/26/2015 21:36 7/26/2015 21:37 7/26/2015 21:38 7/26/2015 21:40 7/26/2015 21:41 7/26/2015 21:43

Vib

rati

on

/G

Time

375703 - Vibration Level over Time

VibrationA

VibrationB