Politechnika Poznahska

Poznań, Poland

Politechnika Poznahska

Poznań, Poland
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Bielak C.,Agregaty Polska | Fabianski B.,Politechnika Poznahska | Janiszewski D.,Politechnika Poznahska | Nowopolski K.,Politechnika Poznahska | And 3 more authors.
Przeglad Elektrotechniczny | Year: 2014

In this paper the idea of an electrically aided pedal-driven vehicle (bicycle) is described. Each of three wheels of the vehicle is driven by electric motor (BLDC) controlled by the central system of power distribution. Velocity of the vehicle and motors power are proportional (with adjustable ratio) to pedaling speed and power respectively. The battery pack is charged by the pedal-driven generator. Description and analysis of the vehicle subsystems are documented with the prototype research results. (Electric drive and control of three-wheel bicycle without mechanical gear).


Urbanski K.,Politechnika Poznahska
Przeglad Elektrotechniczny | Year: 2014

To determine the position of the motor shaft the permanent magnet synchronous, in the case of non-zero speed, for example, you can use the method based on estimation instantaneous value of electromotive force. On their basis, the shaft position is determined. Calculating the velocity directly from the position, typically forces the use of filters in the speed control loop, which introduces an additional delay, resulting in the decreasing of the drive dynamics. The paper presents a method of determining a speed, which do not have that drawback. (Speed estimation of the PMSM using back EMF observer).

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