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Permanent Magnet Synchronous Motor (PMSM) as the key component of the Electric Vehicles (EVs), has numerous advantages over other synchronous motors. Fault diagnosis is essential to guarantee the safety and continuity of the operation for EVs. An undetected fault in the PMS M system may lead to high repair cost, or even catastrophic failure. Among lots of faults in the PMSM, the most serious are short...
Recently, fault diagnosis is becoming more important due to the increasing demand of using permanent magnet synchronous machines (PMSMs). In particular, inter-turn short fault (ISF) is one of the most frequent electrical faults in PMSMs. In this paper, we propose a method using negative sequence components (NSC). The NSC method not only calculates a fault indicator that is not easily affected by the...
This paper presents a synthesis of control laws based on the theory of Lyapunov for speed control of permanent magnet synchronous machine, a first approach by variable structure and the second by input-output linearization. The results obtained are carried out under the same operating conditions in Matlab/Simulink environment. A comparative study was made showing the performance of the two control...
In safety relevant applications the safe state of the system is evaluated as being an operating mode without an unreasonable level of risk. This paper proposes a new architecture for safety relevant systems that are using electric motors. Using this architecture one can diminish the range where the unsafe state is defined as off and understood as deactivated or as no assistance provided. Moreover,...
Due to the strongly coupled characteristics of permanent magnet synchronous motors(PMSM), the feedback linearization method is presented to decouple the torque current and the flux current in the dynamic state, and control both currents respectively to achieve a quick and precise torque tracking control. Then, the effectiveness of the control method is validated by an effective simulation model of...
Harmonics in the electromagnetic torque can be a source of concern in interior permanent magnet synchronous machine (IPMSM) drives. The harmonics are created by non-idealities in the electromagnetic fields produced by the magnets and the stator excitation. They lead to vibration that can cause premature wear of the drivetrain components as well as acoustic noise that may be bothersome to users. In...
The rotor position is integrant information for vector control drive system of Permanent Magnet Synchronous Motor (PMSM). In this paper, the focus is on the rotor position of PMSM detecting by the resolver sensor. The outstanding features of this sensor are its robust structure and noise insensitivity. To extract speed from the output of resolver we need R/D demodulator circuit. A new Artificial Neural...
This paper deals with a design method of an external permanent magnet (PM) synchronous motor (PMSM) using concentrated winding (wound around one tooth). The machine is used for the electrical motorization of a small urban hybrid vehicle. Such an application leads to strong design constraints, such as weight limitation, high starting torque, compactness etc. To achieve the design of the machine, an...
This paper presents calculations and measurements for a permanent magnet synchronous machine (PMSM) with buried magnets. Due to wide field weakening capability and high utilisation of this external rotor machine, it can be especially used for traction applications. The steady-state torque is about 346 Nm and overload torque at three times nominal current is about 580 Nm. Fractional-slot concentrated...
This paper presents the process of circuit and field coupled finite element (FE) modeling of permanent magnet synchronous motor (PMSM). Compared with traditional centralized parameters model the presented model can consider many effects to the dynamic performance of PMSM, such as the effects of saturation of iron materials, the eddy current, the relative movement of teeth and slots and high-order...
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