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A low cost, microprocessor-based battery charge controller

Technical Report:

Abstract

This report describes the design, construction, testing, and evaluation of a microprocessor-based battery charge controller that uses charge integration as the method of battery state-of-charge estimation. The controller is intended for use in medium-size (100-1000W) photovoltaic systems that employ 12V lead-acid batteries for charge storage. The controller regulates the charge flow to the battery and operates in three, automatically-determined modes, namely: charge, equalize, and float. The prototype controller is modular in nature and can handle charge/discharge currents of magnitude up to 80A, depending on the number of circuit boards employed. Evaluation tests and field trials have shown the controller to be very accurate and reliable. Based on the cost of the prototype, it appears that an original equipment manufacturer's selling price of $400 for a 40A (500W) unit may be realistic. 18 figs., 2 tabs.
Authors:
Pulfrey, D L; Hacker, J [1] 
  1. Pulfrey Solar Inc., Vancouver, BC (Canada)
Publication Date:
Jan 01, 1990
Product Type:
Technical Report
Report Number:
PSI-89-05647; MICROLOG-89-05647
Reference Number:
CANM-90-004252; EDB-90-033107; ERA-15-016710
Subject:
25 ENERGY STORAGE; 14 SOLAR ENERGY; SOLAR BATTERY CHARGERS; COMPUTERIZED CONTROL SYSTEMS; BATTERY CHARGING; DESIGN; MICROPROCESSORS; PERFORMANCE; PERFORMANCE TESTING; BATTERY CHARGERS; COMPUTERS; CONTROL SYSTEMS; ELECTRONIC CIRCUITS; EQUIPMENT; MICROELECTRONIC CIRCUITS; SOLAR EQUIPMENT; TESTING; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries; 140600 - Solar Energy- Photovoltaic Power Systems
OSTI ID:
5065798
Research Organizations:
Pulfrey Solar, Inc., Vancouver, BC (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: CNN: EMR 23216-6-6109/01-SZ
Availability:
PC Energy, Mines and Resources Canada, Communications Branch, 580 Booth St., Ottawa, ON, CAN K1A 0E4; MF CANMET/TID, Energy, Mines and Resources Canada, 555 Booth St., Ottawa, Ont., Canada K1A 0G1.
Submitting Site:
CANM
Size:
Pages: (63 p)
Announcement Date:

Technical Report:

Citation Formats

Pulfrey, D L, and Hacker, J. A low cost, microprocessor-based battery charge controller. Canada: N. p., 1990. Web.
Pulfrey, D L, & Hacker, J. A low cost, microprocessor-based battery charge controller. Canada.
Pulfrey, D L, and Hacker, J. 1990. "A low cost, microprocessor-based battery charge controller." Canada.
@misc{etde_5065798,
title = {A low cost, microprocessor-based battery charge controller}
author = {Pulfrey, D L, and Hacker, J}
abstractNote = {This report describes the design, construction, testing, and evaluation of a microprocessor-based battery charge controller that uses charge integration as the method of battery state-of-charge estimation. The controller is intended for use in medium-size (100-1000W) photovoltaic systems that employ 12V lead-acid batteries for charge storage. The controller regulates the charge flow to the battery and operates in three, automatically-determined modes, namely: charge, equalize, and float. The prototype controller is modular in nature and can handle charge/discharge currents of magnitude up to 80A, depending on the number of circuit boards employed. Evaluation tests and field trials have shown the controller to be very accurate and reliable. Based on the cost of the prototype, it appears that an original equipment manufacturer's selling price of $400 for a 40A (500W) unit may be realistic. 18 figs., 2 tabs.}
place = {Canada}
year = {1990}
month = {Jan}
}