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In this paper, an optimal voltage vector selection strategy based on predictive control for the direct torque control (DTC) in surface permanent magnet synchronous motor (SPMSM) is reported. The proposed predictive control determines the angle of applied voltage vector from the proper voltage vector selection area according to cost function and uses space vector modulation (SVM) to generate the applied...
In this paper, the effect of zero voltage vector in permanent magnet synchronous motors (PMSM) direct torque control (DTC) system is analyzed. As zero voltage vector decreases stator flux and torque slowly, when system decreases the amplitude of stator flux and torque at same time, zero voltage vector can be used to suppress stator flux and torque ripple at steady-state. And non-zero voltage vector...
In this paper, an optimal switching table for PMSM DTC system using zero voltage vector is proposed. Zero voltage vector decreases stator flux and torque very slowly, so it can be used to suppress torque ripple when the system is at steady-state. And when the system is at dynamic-state, non-zero voltage is used to get quicker response. As both 111 and 000 can be used to generate zero voltage vector,...
In this paper, voltage vector selection for the direct torque control (DTC) for surface permanent magnet synchronous motor (SPMSM) based on predictive control is proposed. Firstly, based on increasing or decreasing effects of the applying voltage vector on the amplitude of stator flux and torque of SPMSM, the proper voltage vector selection area of the DTC for SPMSM is given. Then predictive control...
It is difficult for support vector machines to be employed in microcontrollers because of limited hardware resources. A framework based on cloud computing conception is presented for solving this problem. In this framework, the support vector machines are not trained in the microcontrollers, but trained in the SaaSproviders. Microcontrollers gain or update models from SaaS providers and store them...
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