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Since the efficiency is very important in automotive applications, in this paper a new minimum-copper-loss control scheme, over full speed range for an IPMSM drive used for hybrid electric vehicle application under both current and voltage limits is presented. This paper presents an algorithm to get the smallest current vector command in both field-weakening and deep field-weakening regions for a...
This paper describes the characteristics of a new concept motor which uses combined magnet motive forces for an application of Electric Vehicles. The motor is a surface type PMSM and two kinds of magnet motive forces which are called a Compound Magnet Motive Forces (CMMF) can be used by the special magnet arrangement. By adding the current to match each of the magnet motive forces, this machine can...
EV with 4 in-wheel motors has advantages of system's light weight because it has respectively independent control system. But it is difficult that EV has to control four in-wheel motors at once. The speeds of four in-wheel motors are different each other, because the disturbance and over wheel of four in-wheel motors are not the same. EV is necessary to control synchronously. Velocity differences...
This paper discusses the relationship between the amplitude of stator flux linkage and the torque of interior permanent magnet synchronous motor (IPMSM). In order to change the load angle and the torque accordingly, the amplitude of stator flux linkage should be kept in restricted range. It also explains how to control the amplitude of stator flux linkage to get maximum torque by using direct torque...
Electric Vehicle (EV) is a dream for the human being city traffic without exhausting gas and with low noise. Permanent magnet synchronous motor (PMSW) became at the top of AC motors in high performance drive systems such as EV. This paper describes a full digital system to control a PMSM used in EV driving by TMS320F2812 DSP. Based on the analysis of the mathematical model of PMSM, the constant torque...
This paper presents a comparison of electromechanical system used in a vehicle with three different on-board voltage levels. The electromechanical system is composed of interior permanent brushless synchronous motor - IPM and electronic control unit - ECU. Three voltage levels are analyzed in order to increase systempsilas efficiency and decrease systempsilas weight. Additionally, the important factors...
An outstanding feature of electric motors with permanent magnets is their high efficiency. It is highest among all the motors used in electric drive applications. Permanent magnet synchronous motors (PMSM) dedicated for use in electric traction drives or in automotive vehicles should be additionally characterized by a high maximal to nominal torque coefficient and by a wide range of speed control...
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