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.”
“A Tesla?”
“No this uses a General Motors body.”
“Oh, a remake of the EV1?”
“Shh, you are not supposed to notice.”
In the world of EV conversions, a glider is a rode-worthy vehicle without a drive train. In appearance the Saturn Sky has a passing resemblance to the Tesla roadster.
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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