Chopper Del Sol is a great step forward in the electrical system that is crucial to any high performance solar racer. Using top of the line mono-crystalline silicon cells, Eleanor uses less power than a hair dryer, but manages to travel at highway speeds of over 55 mph.
Solar Array & MPPTs:
The 6 square meter array is made up of 21% efficient monocrystalline silicon cells. The power coming off the array is controlled by six custom-designed 98% efficient maximum power point trackers (MPPTs), for an estimated output of 1200 W. These MPPT modules act as an interface between the battery pack and the solar array, which ensure the cells are operating at their peak power.
Chopper’s pack is constructed from 434 Lithium Ion cells, and has a capacity of 43 AHr. Thanks to our generous sponsors, including Panasonic, SEVT recently constructed its most energy-dense battery pack yet, one of the highlights of the electrical system. The battery pack monitors voltage and temperature of 600 cells, and has safeguards to protect against damage.
A CAN network provides the team and the drivers with a constant data flow about the status of the battery pack and the solar array, allowing the team to optimize their speed in real-time.
Rounding out the electrical system is the NGM motor, a high efficiency direct-drive motor, specifically tailored to high efficiency vehicles such as solar raycers. The motor has also been equipped with regenerative braking, allowing for further charging of the battery pack. Slowly sipping on its battery, Chopper cruises for two hundred miles without recharging. Paired with the solar array, Chopper can cruise under full sunshine almost indefinitely.
If you are interested in learning more about the electrical systems, please contact us at firstname.lastname@example.org.