CONTROLLER

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$50,000.00
Award Year:
1983
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
648
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Notham Electronics Inc.
303 Williams St. #1531, Huntsville, AL, 35801
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
BRAHM SEGAL
PRINCIPAL INVESTIGATOR
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
FOR USE IN REMOTE POWER CONTROLLERS, LINEAR AMPLIFIERS CAPABLE OF DELIVERING 15 KW AND 25 KW FROM DC TO 50 KHZ WITHEFFICIENCY OF UP TO 90% USING SPECIAL MODULATION TECHNOLOGY ARE THE FOCUS OF THIS PROJECT. SUCCESS IN THIS EFFORT WOULDELIMINATE THE NEED TO USE INVERTERS AND LOCAL POWER SUPPLIESAT NUMEROUS LOCATIONS IN A DISTRIBUTED MULTITERMINAL NETWORK. HYDRAULIC SYSTEMS COULD BE REPLACED BY SMALL ELECTRIC MOTORS WHICH OPERATE AT HIGH FREQUENCY CONSUMING HIGH POWER AC. LOCAL FREQUENCY DIVIDERS COULD BE USED FOR VARIOUS LOADS AS NEEDED. (LARGE AC TO DC POWER INVERTERS ARE ELIMINATED COMPLETELY). MOTORS WITH MORE THAN 3 POLES COULD BE USED. IN THIS CONCEPT, A LOW LEVEL OSCILLATOR WOULD MODULATE EACH LINEAR AMPLIFIER TO PRODUCE EACH PHASE AT ANY PHASE AT ANY SELECTED FREQUENCY UP TO 50 KHZ. MINIATURE HIGH FREQUENCY POWER TRANSFORMERS REDUCE AC VOLTAGES FOR LOADS AS NEEDED. TO EVALUATE THE FEASIBILITY OF THE PROPOSED INNOVATION, TWO ENGINEERING MODELS WILL BE BUILT AND TESTED FOR THE FOLLOWING CHARACTERISTICS: ENGINEERING MODEL 1 - 170 VAC @ 85 AMPS DC TO 50 KHZ AT 50 V/USEC. ENGINEERING MODEL 2 - 230 VAC @ 110 AMPS DC TO 50 KHZ V/USEC. TOTAL STABILITY ON REACTIVE LOADS UP TO 50 KHZ.TRANSIENT RECOVERY FROM OVERLOAD LESS THAN 1 USEC. TOTAL HARMONIC DISTORTION UNER 1% AT FULL POWER AT 20 KHZ.

* information listed above is at the time of submission.

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