Power Systems & Controls, Inc.

SERIES EPM - DC ENERGY STORAGE MODULE

Guideform Specification (Future)

DC Energy Storage Flywheel Cut Sheet

System Description

The Series EPM is a stand alone power module designed to replace or supplement batteries in UPS systems. It is an energy storage system that creates power by means of kinetic energy conversion rather than the chemical reaction process utilized by existing battery strings. PS&C's Flywheel topology is an extremely reliable source of emergency power designed to support the DC voltage long enough for the standby engine generator to start and be transferred on line, even after the engine generator has been in service for a few years. The Flywheel is driven by an induction motor through a (VFD) variable frequency drive. The DC output is derived from a three phase synchronous output converted via a rectifier. As the standard construction is a two bearing, single shaft machine, there are few serviceable components in the unit, making maintenance requirements minor. PS&C's Series EPM combines the latest engineering methods with "Brute Force". The EPM offers the durability and rigidness of a battery without the maintenance required or the potential problems associated with them.

Design Features

• High efficiency induction motor
• Brushless synchronous generator
• Precision control variable frequency drive with constant speed operating mode @ unity power factor
• Performance will not decline over time
• Six pulse three phase rectifier
• Anti-Friction bearings throughout
• Winding over-temperature protection
• Over-speed protection
• Front and Left side access only
• Full M-G access (Front only)

Standard features and equipment

• EPM utilized PS&C's "Quiet Packaging" method of sound attenuation
• 2 Axis vibration sensors
• No nuisance engine starts
• Remote Engine generator start circuit
• Remote Transfer switch position monitoring
• Output voltage adjustment
• Touch screen interface for control metering - Over 250 events storage capability

Options

• Remote communications
• Remote monitor (Status & Alarm)
• Remote touch screen (Control)
• Parallel modules
• Custom building management interface module
• NEMA 3R enclosure
• Color touch screen
• "Turn Key" Installation