Green Car Congress reports that AMP (Advanced Mechanical Products) “has developed an all-electric high performance, high efficiency drive train.”
“They are using a bar wound motor to build a high performance electric roadster.”
“No this uses a General Motors body.”
“Oh, a remake of the EV1?”
“Shh, you are not supposed to notice.”
The first two vehicles available for AMP conversions are the GM Saturn Sky and the GM Pontiac Solstice. The end product is an all-electric vehicle with a range of up to 150 miles per charge. AMP uses a Li-ion pack from an as-yet undisclosed supplier. The pack carries a 3 year/36,000 mile warranty. Individual cells can be replaced on an as-needed basis without replacing the entire battery pack. AMP expects the battery packs to retain 80% of their capacity up to 100,000 miles.
The heart of the drive train is an advanced electric motor/generator from Remy International. The high torque, high flow cooling, permanent magnet version of electric motor “offers up to 160 kW peak output and 440 N·m of peak torque from a 43 kg package operating at 650 VDC.” There also is a standard version of the HVH250 that “delivers 82 kW peak output and 325 N·m peak torque from a 33.5 kg package operating at 320 VDC.”
GCC notes “a GM study on bar wound stators—similar to the Remy HVH technology—compared to wire wound stators found a greater than 20 °C temperature difference between the two technologies.” This temperature difference happened in “an EV application over an aggressive drive cycle (which is substantially more demanding on motors than a hybrid application).”
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