Abstract
The design, development and operation of a microcomputer-controlled, 16-bit, 0.5 MW battery test facility is described. Discharge/charge profiles of up to 45 steps of constant power, current and resistance on discharge, and constant current or voltage on charge, can be programmed in any combination. The discharge uses a resistive load, allowing a maximum current of 16 000 A to be resolved to about 250 mA. However, control precision is limited by the current measuring shunts to better than ±0.2% of reading. Charging is carried out using a thyristor-controlled analogue supply to provide up to 3000 A at 50 V; the charger can be operated under local or remote control. Both charging and discharging can be carried out automatically, under computer control, or under manual supervision using a manual control console. Typical performance testing of submarine traction cells is reported, as is the load simulation testing of a helicopter engine starter transformer-rectifier unit.
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