Case histories of selected applications with {open_quotes}written-pole{close_quotes}{sup Trademark} machines

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:269837

Morash, R T ^[1]

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1. Precise Power Corp., Bradenton, FL (United States)

{open_quotes}Written-Pole{close_quotes}{trademark} technology has been patented and commercialized for electric motors and generators. It advances the state-of-the-art for AC motors and electrical energy storage systems. Efficient use is made of the inherent flywheel energy stored in the rotor of a written-pole motor-generator set. The machine is a continuous on-line power conditioner, and is also an electro-mechanical battery that delivers useful precise frequency AC power for extended time during utility power sags, surges and blinkouts. If momentary power interruptions extend into blackouts after 15 or more seconds, the motor-generator allows time to transfer to a dual feeder system, or to tie into an engine generator for a no-break transfer, Also called the Roesel Motor-Generator{trademark} (RMG), it is used as an Uninterruptible Power Supply (UPS) system without batteries. The machines have been applied and demonstrated to provide at least 15 seconds of ride-through with exact 60 Hz frequency and full voltage at full load. The written-pole motor is synchronous, has low starting current, and reflects a unity power factor, sine wave load to the utility. The motors unique features provide solutions to niche problems. Case histories are presented in this paper.

• OSTI ID: 269837
• Report Number(s): CONF-951050--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
33 ADVANCED PROPULSION SYSTEMS
AC SYSTEMS
CAPACITANCE
DESIGN
ELECTRIC GENERATORS
ENERGY EFFICIENCY
FLYWHEEL ENERGY STORAGE
HARMONICS
MAGNETS
MANUFACTURING
MARKET
MOTORS
PERFORMANCE
POWER FACTOR
ROTORS
TORQUE