2BGGHIJKIndustrial Power Controllers and Monitoring System /pbrief Email: erazmus@wantree.com.au ^(2Ze5(nPBrush 0 0 689 60BM>(<??????????????|x>?|???<????????p??p?~p??0~p?~p<0A| <8C|!?<I;8C|!><8C|!~<x?<~<|?x?>?||?x>?|?x|>|>9>|x??8`?<~|??8`>~???x`@`?~??@~?@`?????~?A`?????????????1st July 1998 PO Box 491 West Perth 6872 Western Australia Preliminary Product Brief Ph and Fax +618 9444 8961 Alt. Fax +618 9384 0861 Remote Area Power Systems - Battery Chargers Introduction: Remote Arear Power Systems (RAPS) utilise conventional battery chargers operating at less than 90% efficiency, these battery chargers also:- switch dangerously high voltages or large currents, produce heavy ripple with consequent radio frequency interference and cause irregular engine/alternator loading which reduces engine life. Improved Approach: Network Power Systems has developed a significantly improved approach for RAPS to overcome all the above problems and limitations and reduce charge losses to 1%. This new topology improves system reliability, does not switch large voltages or currents, minimises output ripple, reduces radio frequency interference and provides very smooth engine loading to maximise engine life. All these improvements have been achieved at a cost which is actually lower than conventional thyristor based battery chargers and all this includes a boost in power delivery efficiency to 99%. Components: Key components of the system are a remotely programmable Automatic Voltage Regulator (AVR) connected to a Battery Charge Regulator (BCR). There is no need for expensive thyristors or their extensive filtering networks. Cabinets housing power electronic components are much smaller and easier to service. Additional Benefits: Very precise and smooth current/voltage control offered by this improved approach allows the use of more elaborate charge control algorithms to ensure every opportunity for delivering maximum charge to conventional wet cell or modern sealed lead acid batteries. Charge control algorithms can be easily changed to cater for any new type of battery technology within an existing infrastructure. This new method greatly improves system stability and can completely avoid erratic engine operation such as needless 'hunting' which is a generally accepted side effect of conventional battery chargers. Design Philosophy: Network Power Systems philosophy is to be responsive to improving the efficiency of power delivery systems around the world. To develop applications for this new approach and consider design alterations to customise installations and retrofits to existing Remote Area Power Systems. ?x`@`?~??w >sKqLm~iea]Y VQN$ gyytrmkfkd}_]Y VQN$ \=mk=]<7]<7]>\X=j~<]=]=]\\\= =]<8]=] \e=g{ <]<8]=]{\\\\\\i\k\\\\8]<8] fA. <%;8(#b Arial 0Courier New?1st July 1998 PO Box 491 West Perth 6872 Western Australia Pr