New utility intertied power conditioning system

Journal Article · Tue Mar 01 00:00:00 EST 1983 · Photovoltaics; (United States)

OSTI ID:5265515

Ross, J A

This article describes a microprocessor controlled power conditioning system (PCS) using field effect transistors as switching elements. A logic array chip allows all except power components to be on a single small circuit board. The result is a low cost PCS with excellent waveform and power efficiency. Silicon controlled rectifer (SCR) thyristors used in an unfolding circuit combined with tight monitoring of utility line voltage and frequency eliminate any possibility of running-on during utility outage. A ferrite isolation transformer isolates the DC array from the line. A sine wave current reference waveform is generated from a variable amplitude look up table in the processor memory. Power factor is forced to be unity by operating the PCS as a sine wave current source in phase with the utility voltage.

• Research Organization: Solar Inverter Co., La Jolla, CA
• OSTI ID: 5265515
• Journal Information: Photovoltaics; (United States), Vol. 1:4
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
42 ENGINEERING
INTERCONNECTED POWER SYSTEMS
POWER CONDITIONING CIRCUITS
PHOTOVOLTAIC POWER SUPPLIES
COMPUTERIZED CONTROL SYSTEMS
ELECTRIC UTILITIES
FIELD EFFECT TRANSISTORS
MICROPROCESSORS
POWER FACTOR
SWITCHES
THYRISTORS
COMPUTERS
CONTROL SYSTEMS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
MICROELECTRONIC CIRCUITS
POWER SUPPLIES
POWER SYSTEMS
PUBLIC UTILITIES
SEMICONDUCTOR DEVICES
SOLAR EQUIPMENT
TRANSISTORS
140600* - Solar Energy- Photovoltaic Power Systems
420800 - Engineering- Electronic Circuits & Devices- (-1989)