Solar home system battery and charge regulator testing

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PROGRESS IN PHOTOVOLTAICS: RESEARCH AND APPLICATIONS Prog. Photovolt: Res. Appl. 2001; 9:363±377 DOI: 10.1002/pip.387) Solar Home System Battery and Charge Regulator Testing Pablo Dõ Âaz* and Eduardo Lorenzo Instituto de Energõ Âa Solar±ETSI Telecomunicacio Ân, Ciudad Universitaria, 28040 Madrid, Spain Laboratory testing procedures for solar home system batteries and charge regulators are proposed, as a follow up to the Universal Technical Standard for Solar Home Systems, presented in 1998. Procedures, de®nition and selection of instrumentation have paid particular attention to simplicity, in order to facilitate their application not only in sophisticated laboratories of industrialised countries, but also in local envir- onments and laboratories of developing countries. On the other hand, test results from a measurement programme performed on 8 different batteries and 20 different charge regulators are presented and discussed. Finally, a review for up-dating the technical standard is presented, based on ®eld and laboratory experience. Copyright # 2001 John Wiley & Sons, Ltd. 1. INTRODUCTION S olar home systems SHSs) are widely accepted as a mature and practical product for home electri®cation of the hundreds of millions of families living in the poorest villages of the so-called developing world roughly two billion people 1 ), having in common little or no prospect of gaining access to a conventional source of electricity supply within their lifetimes. In fact, world market global indicators 2,3 lead to the estimate that about 13 million home systems for lighting, radio and television are currently in operation, totalling 40 MW p , and large rural electri®cation programmes comprising some thousands of SHSs are increasingly becoming a signi®cant part of the current market the Spanish cooperation agencies alone are currently involved in large-scale SHS programmes in ten countries throughout the world). Thus, SHSs currently represent the most widespread PV application, and things are likely to be the same in the years to come. However, these encoura- ging ®gures do not show that PV rural electri®cation also involves dif®culties. Disturbing data related to tech- nical problems are appearing in the literature 3±6 , and the need for quality assurance is certainly widely recognized. This has motivated several international actions towards the promotion of standardization and cer- ti®cation practices, along the same lines as those that already exist for PV modules. Initiatives have been taken by different agencies: rural electri®cation promoters national governments, World Bank) and international cer- ti®cation bodies IEC, PV-GAP). An extended review of this activity has been performed by the GTZ. 7 It should be admitted that, despite signi®cant efforts, the establishment of internationally recognized SHS certi®cation practices is facing considerable dif®culties not surprisingly, as the decentralized character of SHSs makes the local factors extremely relevant) so that, at least in the short term, immediate projects attempting to implement a quality assurance procedure should be essentially self-reliant. Assistance in that direction was the main purpose of the Universal Technical Standard for Solar Home Systems. 8 This proposed standard resulted from work funded by the European Commission under its Thermie B contract, and it is intended to provide a quality reference for procurement speci®cations issued by national governments, donors and investors, and also Published online 24 July 2001 Received 15 February 2001 Copyright # 2001 John Wiley & Sons, Ltd. Revised 25 April 2001 *Correspondence to: P. Dõ Âaz, Instituto de Energõ Âa Solar±ETSI Telecommunicacio Ân, Ciudad Universitaria, 28040 Madrid, Spain y E-mail: [email protected] Contract/grant sponsor: EC±DG XII; contract/grant number: JOR-3-CT98-0275 Applications

Transcript of Solar home system battery and charge regulator testing

Page 1: Solar home system battery and charge regulator testing

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Page 6: Solar home system battery and charge regulator testing

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Page 7: Solar home system battery and charge regulator testing

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Page 8: Solar home system battery and charge regulator testing

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Page 9: Solar home system battery and charge regulator testing

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Page 14: Solar home system battery and charge regulator testing

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Page 15: Solar home system battery and charge regulator testing

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