Battery-powered electric bicycles

Morchin, William C.

doi:10.1109/northc.1994.643354

Cited by 16 publications

(3 citation statements)

References 1 publication

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“…The wider the pulse width T ON , the greater the mean armature voltage V T and the higher the motor speed, and vice versa. Figure 11 shows a speed control circuit on a permanent magnet dc motor driver [4][5].…”

Section: Control Circuit Designmentioning

confidence: 99%

Energy Recovery Electric Bicycle with Two-Quadrant DC Motor Drivers

Chuang

2009

2009 IEEE Industry Applications Society Annual Meeting

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This work implements the feasibility of an energy recovery electric bicycle with two-quadrant dc motor drivers to control the speed of ridden downhill. When the bicycle is pedaled, slowing down or coasting, the current flows in reverse to charge the battery, which thus enhances sustained ability and decreases energy consumption by the battery. Regarding the driving motors for electric bicycles, permanent magnet dc motors are chosen as the controlled objects in this study. The speed of permanent magnet dc motors is changed via the armature voltage control method by connecting a dc-to-dc driver between the voltage source and the motor. Regarding the drivers, pulse-width-modulation (PWM) is used to control the turn-on timing of semiconductor devices in the drivers. A wider pulse width implies a higher mean armature voltage and higher motor speed, and vice versa. Finally, simulation results using PSpice software demonstrate the theoretical effectiveness and the feasibility of the proposed apparatus.

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Section: Control Circuit Designmentioning

confidence: 99%

Energy Recovery Electric Bicycle with Two-Quadrant DC Motor Drivers

Chuang

2009

2009 IEEE Industry Applications Society Annual Meeting

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“…The power propelling a bicycle and rider goes mostly into overcoming wind resistance and lifting mass up hills at normal bicycle speeds [2,3]. Bearing and tire friction are small but can equal wind resistance at very low speeds.…”

Section: Electrical Drive Designmentioning

confidence: 99%

“…Electrical bicycles offer extremely efficient, pollutionfree transportation for urban and suburban areas, and the addition of electric drive extends their range. Motorized bicycles are an economic and ecological vehicle suitable for all ages; the use of a helmet is not compulsory; they will not normally require registration and taxes, licensing or operator qualification [2,3]. In this paper, the term "motorized bicycle" is used to describe a partially motor powered bicycle, commonly known as "pedelec" (Pedal electric cycle) [3].…”

Section: Introductionmentioning

confidence: 99%

Design of an electrical drive for motorized bicycles

Boccaletti¹,

Duni²,

Petrucci³

et al. 2008

REPQJ

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Abstract. The aim of this work is the design of an electrical drive for a motorized bicycle, characterised by new solutions for the control method and the regenerative braking system. A dynamic model of the vehicle has been realised, and the characteristics of the drive have been individuated. An effective closed-loop control strategy has been studied, adjusting the motor torque and the current in order to increase the availability range. Finally, a feasibility study of a regenerative braking system based on the supercapacitor technology has been carried out. All the components of the drive have been selected among the models available on the market. In the paper the results of the simulations are presented and other technical-economical aspects such as energy consumption and costs are also briefly discussed.

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