Abstract
In this paper a direct torque control strategy for dual three-phase permanent magnet synchronous motor (DTP-PMSM) is presented, the machine has two sets of three-phase stator windings spatially phase shifted by 30 electric degrees. In order to reduce the stator harmonic current, torque and flux are controlled based on regulators and Vector Space Decomposition technique. The proposed approach has the benefits of low stator current distortion and low torque ripple. The validity and the efficiency of the selected technique are confirmed by simulation results.
Highlights
In the domain industry, conventional three-phase electric machines are mainly used
According to the Vector Space Decomposition (VSD) technique, the basic Direct Torque Control (DTC) does not permit the control of the harmonics that seem in the subspace (z1, z2)
The simulations with Matlab/Simulink environment, were accomplished by using a 240W prototype DTPPMSM whose principal parameters are indicated in table 2 [25]
Summary
The use of electric machines with more than three phases has significantly increased, for high power applications such as system propulsion These machines usually known as multiphase machines which are existing in the domain various that is automobile, avionics, and maritime [2,3,4,5,6,7,8]; and provide several significant advantages such as lower torque pulsations and higher reliability [1]. The key problem of such a system is the occurrence of harmonic current in stator windings [18] This control and VSD theory are introduced into DTC of dual three-phase induction motor [19, 20]. Torque and flux control based on regulators [21, 22] and VSD technique
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