Fuel cell based traction drive with supercapacitor power boost control

Multi-source traction drive for axial flux permanent magnet in-wheel synchronous motor

“…Moreover, to achieve a complete stabilization of the supercapacitor charge, the operating mode 4 (1.3s<t<6.8s) and mode 5 (7.8s<t<8.6s) have been performed during traction drive normal run and during its stop respectively. The control performances in terms of supercapacitor bank energy stabilization have been experimental validated in [5]. Here, the experimental results regarding the possibility of the proposed control to limit the power slope of PEMFC are analyzed.…”

“…The proposed control algorithm for operating modes 1, 3, 4 and 5 has been proposed in [5] for an induction motor. Here, an improvement of the control is proposed for mode 2, which allows to avoid the exceeding of the maximum power slope rate of PEMFEC as well as its maximum power limit.…”

“…The model and the operating modes of the power converter have been initial proposed and experimental validated [5]- [7] in the case of the traction drive with induction machine. Here the model and a brief description of the operating modes are reported, which are necessary to analyze the traction system performances.…”

“…Here the model and a brief description of the operating modes are reported, which are necessary to analyze the traction system performances. With reference to the dual cascaded converter scheme shown in fig.1, the motor voltage space vector v can be expressed as function of commutation functions of both inverters by the following relation [5]:…”

“…Besides, an energy stabilization control on the supercapacitor is performed also during motor normal runs and stops. The control algorithm is completed by a suitable modulation strategy for the cascaded VSI, which has been proposes in [5]. The main improvement proposed in this paper is the dynamic limitation of the fuel cell power output rate by means of a control of the load power slope request.…”