CM Technology US-RUPS Product Line Introduction

1. CM Technology US-RUPS Product Line Introduction

2. Base Line Rotary Products Flywheel Based Critical Load Power Outage Rotary Ride-Through Products and Systems A Rotary Ride-Through Power →→ Reliability at its Best! June 10, 2011 US-RUPS aCM Technology Product Line

3. Core Products and Power Systems Offer Core Rotary Products: • Flywheel RRT (Rotary Ride-Through ) Units • Rotary UPS (Uninterruptable Power Supply) Units, with Diesel Engine Extended Power Backup Rotary Power Systems: • Multi-unit Flywheel RRT and electrically coupled Diesel Genset based Systems • Multi-unit Rotary UPS with mechanically clutched Diesel Engine based Systems June 10, 2011 US-RUPS aCM Technology Product Line

4. Rotary Products Advantages Rotary → Flywheel based, Core Product Advantages: • Robustness of Rotary Machinery • High Overload and Short Circuit Capabilities • Flywheel based instead of Battery based Energy Storage • Bi-directional Harmonic Filtering • Load Power Factor Compensation • High Load Bus Fault Clearing Capability • Precision of Power Electronic V-Controls June 10, 2011 US-RUPS aCM Technology Product Line

5. Rotary Products User Benefits • Critical Load Service Reliability Protection Benefits: • High Reliability, UPS Grade Power Source • Fewer components and no low-reliability • battery required • Low Operating and Maintenance (O&M) Costs • High efficiency, no A/C system required • Near unity power factor, no VAR penalty costs • Ease to Install & Long Service Life • Robust and simple construction • 25-year service life, low life-cycle costs June 10, 2011 US-RUPS aCM Technology Product Line

6. Rotary Product Baselines • Rotary UPS / Flywheel RTD One-Lines BYPASS BREAKER LINE FEEDER CRITICAL LOAD BUS LINE BREAKER ISO-REACTOR LOAD BREAKER AC DC ROTOR (SLIP) POWER CONVERTER STATOR BREAKER AC Variable SWITCHGEAR & CONTROLS PANEL stator CLUTCH DIESEL ENGINE rotor FLYWHEEL INDUCTION MACHINE ROTARY SKID-MOUNT EQUIPMENT DIESEL ENGINE POWER BACKUP SKID June 10, 2011 US-RUPS aCM Technology Product Line

7. Rotary Product Baselines UPS Power Delivery to Critical Load Bus – Principle Explained June 10, 2011 US-RUPS aCM Technology Product Line

8. 2.2MVA Rotary UPS Product Implementation Switchgear & Control Panels Induction Motor/Generator HMI & PLC Flywheel Diesel Engine Skid-mount Radiator Rotary Equipment Skid June 10, 2011 US-RUPS aCM Technology Product Line

9. 2.2MVA Rotary UPS Product Implementation • Rotary Equipment Monitoring System by SKF: • Enables timely field • preventive maintenance. • Bearing changes • without equipment • piece movements. • No crane required for • preventive maintenance. • Local Monitoring through Control Panel Terminal • Remote Monitoring through LAN or Phone Modem June 10, 2011 US-RUPS aCM Technology Product Line

10. Product Core Specifications 1. Limited by fuel storage size and/or by refill fuel deliveries June 10, 2011 US-RUPS aCM Technology Product Line

11. Product Performance • Power Interruption →Open Circuit Ride-Through Engine Open Circuit Interruption June 10, 2011 US-RUPS aCM Technology Product Line

12. Product Performance • Power Interruption → Short Circuit Ride-Through Load Bus Voltage Input Line Voltage Reactor(LIR) Current Input Line Current Dead Short Circuit at Line Side of Reactor June 10, 2011 US-RUPS aCM Technology Product Line

13. Product Performance • Step Load ON Response: 0.1 V = 100 V 0.1 V = 600 A 3300A pk 0.1 V = 100 A 410A pk Instant of 80% Step Load Application June 10, 2011 US-RUPS aCM Technology Product Line

14. Product Performance • Step Load OFF Response: Instant of 80% Step Load Removal 0.1 V = 100 V 0.1 V = 600 A 0.1 V = 100 A June 10, 2011 US-RUPS aCM Technology Product Line

15. Product Performance • Load Power Factor (PF) Compensation and • Total Harmonic (THD/TDD) Distortion Reductions: Actual data from 315kVA Rotary UPS Unit, approximately 120kW, 6% unbalanced load. June 10, 2011 US-RUPS aCM Technology Product Line

16. Product Configurations • By Critical Load Support Time: Note 1: Limited by fuel storage size and / or by fuel refill deliveries June 10, 2011 US-RUPS aCM Technology Product Line

17. Multi-unit System Applications June 10, 2011 US-RUPS aCM Technology Product Line

18. Multi-unit System Applications Induction Machine Generator (IMG) Provides Important Advantages Over Synchronous Machines in Multiple-Unit System Configurations • The excitation frequency/phase of the IMG is determined by high-speed • electronic control. • Load frequency/phase is not influenced by rotor speed/position. • Multiple IMGs can be perfectly synchronized with precise electronic frequency control. • Machine speed differences do not cause circulation of real power. • Load steps have no effect on frequency. June 10, 2011 US-RUPS aCM Technology Product Line

19. Multi-unit System Applications Control Modes: • Connected to utility grid • Tie-inductors of all Rotary units are in parallel between grid bus and load bus. • Power from the grid is shared as a result of the (equal) tie inductors. • IMGs regulate load bus voltage level by providing fast reactive power. • IMGs share reactive power through a voltage droop algorithm. • IMGs provide transient real power for sudden load steps. • Real power for each IMG may be different. Real power for each unit • is limited by the internal control. • Disconnected from the utility grid • Electronic synchronization signal keeps the excitation of all IMGs • precisely locked in phase (and frequency). • Leakage reactance of the IMGs ensures real power sharing. • IMGs regulate load bus voltage level by providing fast reactive power. • IMGs share reactive power through a voltage droop algorithm. June 10, 2011 US-RUPS aCM Technology Product Line

20. Multi-unit System Applications Normal Startup Sequence – All Units Started From Standstill 1) Stator shorted. Units accelerate to grid-connection speed using grid power drawn through tie inductor. 2) IMG synchronizes to grid and MGCB closes. IMG accelerates to normal standby speed using grid power drawn through tie inductor. When all units are at standby speed, IMG synchronizes to grid again. 3) LBCB in all units close and bypass breaker is opened. June 10, 2011 US-RUPS aCM Technology Product Line

21. Multi-unit System Applications Transfer Load BusFrom One Unit toAnother Unit A and Unit B initially supply separate load buses from different power sources INPUT BREAKER A opens, putting Unit A in UPS mode. Synchronizing source voltage for Unit A is switched from input voltage of Unit A to LOAD B bus voltage. Unit A synchronizes to LOAD BUS B voltage. BUS TIE BREAKER closes and Unit A LBCB opens. Transfer is complete. June 10, 2011 US-RUPS aCM Technology Product Line

22. Multi-unit System Applications Transfer of Unitfrom One PowerSource to Another Unit A initially connected to POWER SOURCE A. INPUT BREAKER A opens, putting Unit A in UPS mode (ICCB open). INPUT BREAKER B closes. Unit A synchronizes to POWER SOURCE B voltage. ICCB closes. Transfer is complete. June 10, 2011 US-RUPS aCM Technology Product Line

23. System Reliability and Availability • Study Case: The Multi-unit Rotary System of 14 Units (N) plus y=2 distributed Redundant Units for a total number of Units n = N+y = 16, a 16-Unit Rotary Power System. • The components for Flywheel RTT were combined using appropriate use factors to a single Unit MTBF (Mean Time Between Failure) of 17.7 years, Notes 1 and 2. • Result: • With a MTTR (Mean Time To Repair) of 8 hours per failure the 16-Unit Rotary Power System Availability is 0.9997. • The Utility Grid MTBF is set at 100 hours and this yields Utility Availability of 0.995 assuming a nominal outage time of 30 minutes. • Combining the Utility Grid and 16-Unit Rotary Power System availabilities yields the 16-Unit Continuous Power System Availability of 0.9999987. • Notes: • 1. This number is in the same range as other published system level data for a Rotary UPS. • 2. Data from the PREP (U.S. Army Center for Public Works Power Reliability Enhancement Program) Database version 4.2. It is referenced in 'Operational Maintenance Data for Power Generation, Distribution and HVAC Components' (Hale, Arno and Briggs, IEEE Transactions on Industry Applications, Vol. 35, No. 2, March/April 1999). June 10, 2011 US-RUPS aCM Technology Product Line

24. Summary of Product and System Strengths • High Reliability and Availability, A True UPS Grade Power Source • + Fewer components and no battery required • Application Versatility to fit wide range of Critical Load Requirements • + Easy parallelable and multi-unit systems • Low Operating and Maintenance (O&M) Costs • + High efficiency, 96% +, no A/C system required • + Near unity power factor, no VAR penalty costs, low TDD • Ease to Install, Long Service Life & High Return Investment • + Robust and simple construction • + 20-year service life, low life-cycle costs • + Estimated ROI: 15 to 40%, Payback: 2 to 5 years. June 10, 2011 US-RUPS aCM Technology Product Line

25. Serviceability and Maintenance • RRT 2200 System Designed for Serviceability • Bearing changes do not require movement of adjacent equipment • Couplings and Hubs can be removed and installed without heating • No Vacuum Pumps for the flywheel allows for simplified topology • All Bearings are Commercially Available • The Systems Monitory System will advice of any potential vibration • problems before they become a problem – proactive monitoring • No special tools required for service • Service and Repair By • Directly by CM Technology • National Service Organization • Local Service Organization • Customers In House Service Group with minimal training • Customized Service Contracts Available to the Customers Specific Requirements June 10, 2011 US-RUPS aCM Technology Product Line

26. 5 Year Critical Spare Parts Kit Typical Spare Parts Costs 5% of System Cost June 10, 2011 US-RUPS aCM Technology Product Line

27. Hot Questions & Cool Answers Thank you for Considering US-RUPS Rotary Products and System Solutions. June 10, 2011 US-RUPS aCM Technology Product Line