Vidar GronasEuropean Manager, Energy Segment

Mar/2012

Roberto PiacentiniGlobal Program Manager, Energy Segment

Solving Renewable Intermittency:

Advanced Grid Adaptive Energy Storage Control Systems

Theresa WoodielGlobal Marketing Manager, Energy Segment

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Agenda

• Power Electronics for Grid-Tied Energy Storage• Technical Requirements• Practical Applications

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Large scale grid-tied energy storage• Increases efficiency and lower the cost of energy production• Facilitates the integration of intermittent energy sources• Allows utilities to adapt energy production to match energy consumption

GRIDDC

DC

AC

Generator

AC

Inverter/Converter/DrivePower System

Control System

Transformer Converter/Rectifier Inverter/Drive

Energy Storage Stack,Solar Array, or Wind Farm

DCDC Management

System

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Technical Requirements for Power Electronics

• Accurate high-speed measurements of 3-Phase Voltage and Current information

• Advanced algorithms• Scalability from 500 MW to multi-megawatt• Remote data access from system diagnostics

and management

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Energy StorageGrid-tied Megawatt Storage for Wind Energy

• First full utility-scale deployment in 2009 1.0 MWh storage coupled with 30 MW wind farm

on a 80-200 MW grid• Energy storage platform capable of:

Transmission Curtailment Ramp Control / Time Shifting Grid Frequency / Voltage Regulation Support

• National Instruments platforms used for: Battery management and monitoring High speed / subcycle supervisory control

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Standard sbRIO (Half Moon) Product

Custom daughter (I/O) daughter board developed by NI R&D

• 1 to 5kW power using Polymer Electrolyte Fuel Cell Technology• Control and monitor air/water flows, temperature, inverter and gas valves• Project based on sbRIO, 11,000 sbRIO deployments by 2015• Development completed in less than one year

Fuel-Cell Control and MonitoringMajor Supplier of Residential Fuel Cells

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Inverter Control TechnologyDesign, prototype and deploy next generation inverter control system

SB-RIO General Purpose Inverter Controller (GPIC)

• California Energy Commission identified that over 80% of their solar farms’ failures are related to inverters

• Improve efficiency and reliability• Fast HIL inverter simulator with loop rates over 3M/sec• Read inputs, calculate simulation, update outputs

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For more information:

Vidar GronasNI Energy Segmentvidar.gronas@ni.com