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This paper proposes a new and simple while cost-effective method for light electric vehicles regenerative brake with BLDC motor (Brushless DC Motor). The power stage topology of this electric vehicles' motor controller is similar to traditional BLDC motor controller. There is not necessary to use additional power converter, such as a boost converter, or other electric energy storage system for regenerative...
Hybrid excitation brushless starter/generator (HESG) with trapezoidal back EMF is promising for automotive applications. Dynamic performance improvement of generator DC-link voltage is important to the increasingly automotive sensitive devices. However, limited dynamic response of HESG is attributed to the traditional diode rectification with large time constant of field winding. In view of relatively...
Hybrid excitation brushless DC generator (BLDCG) and ultracapacitor are very promising in automotive integrated starter/generator (ISG) application. However, with a traditional diode rectification, it is difficult to regulate the DC-link voltage of BLDCG over a wide operating range at low cost. A controlled rectification method is proposed to improve generating capacity of BLDCG with ultracapacitor...
Consequent-pole permanent magnet (CPPM) generator with trapezoidal back EMF is an ideal candidate for automotive application, and accurate calculation about DC-link voltage is very important for the design of CPPM generator. However, the leakage inductance of CPPM generator can affect electrical time constant and current waveform, which will result in DC-link voltage error between the practical and...
In order to improve dynamic performance and reduce switching loss of permanent magnet synchronous motor system in electric vehicle drive, a self-adjusting direct torque control strategy is proposed. Based on the analyses of zero voltage vector in DTC, fuzzy control rules with zero voltage vector are presented to acquire both quick dynamic torque response of PMSM and reduced switching loss of inverter...
In order to improve efficiency of electric drive system and dynamic performance of electric vehicle (EV) driven by permanent magnet synchronous motor (PMSM), a novel direct torque control (DTC) strategy in EV drive is proposed. Based on operating mode of PMSM, different space voltage vectors are chosen to acquire both quick dynamic torque response of PMSM and reduced switching loss of inverter. An...
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