Test and Evaluation of the Philips Model PE 1701 and Lester Model 9865 Electric Vehicle Battery Chargers

摘要

The Philips Model PE 1701 and the Lester Model 9865 electric vehicle battery chargers have been tested by the Tennessee Valley Authority. Charger input/output voltage, current, power characteristics, and input waveform distortion were measured and induced electromagnetic interference was evaluated while the chargers recharged a fully discharged lead-acid battery pack. Electrical quantities were measured with precision volt-ampere-watt meters, frequency counters, a digital storage oscilloscope, and a spectrum analyzer. The Philips charger required 12.2 hours to recharge a 144-V battery; it had an energy efficiency of 86.0 percent and a specific power of 87.4 W/kg (39.7 W/lb). Input current distortion was between 6.9 and 23.0 percent, and electromagnetic interference was observed on AM radio. The Lester charger required 8.2 hours to recharge a 106-V battery; it had an energy efficiency of 83.0 percent and a specific power of 117.3 W/kg (53.3 W/lb). Current distortion was between 52.7 and 97.4 percent, and electromagnetic interference was observed on AM radio. (ERA citation 09:028716)