In the paper the general conception and real construction of a three-wheel bicycle with auxiliary electric propulsion is presented. Each of the vehicle wheels is driven by an electric motor (BLDC) controlled by the central system of power distribution. The generator that charges a battery pack is driven by pedals. The vehicle speed is proportional with adjustable ratio to the pedaling velocity, whereas the power delivered to the motors is appropriately increased to the pedaling power with adjustable degree. Description and analysis of the selected modules of the vehicle are documented with prototype research results.
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