A new approach to reduce torque ripple and noise in twelve-sector based direct torque controller fed permanent magnet synchronous motor drive: simulation and experimental results

A new approach to minimize torque ripple and noise in model predictive control of permanent magnet synchronous motor drives

“…In conventional methods, offline machine parameters are used to calculate the reference of the stator flux. In proposed MPC, the stator flux reference is instantaneously calculated from values of torque reference (Sivaprakasam, 2017) as in equation (22). The flux is calculated using the MTPA principle to improve system efficiency…”

“…The efficiency of the proposed MPC technique is validated by simulations executed in MATLAB/Simulink environment. The machine parameters considered in this work are the same as the parameters used in the literature (Sivaprakasam, 2017; Sivaprakasam and Manigandan, 2013a, 2013b; Wang et al, 2011). The steady-state performance analysis and dynamic analysis of proposed MPC are performed in comparison with standard MPTC that uses flux and torque error in the cost function as explained in equation (12).…”

“…Furthermore, to justify the claim of the proposed cost function, quantitative analysis of average switching frequency fav, torque ripple Tripple, and flux ripple values are carried out among the proposed MPC, standard MPTC, switching table–based DTC with three-level neutral point clamped inverter—Scheme 1 (Sivaprakasam and Manigandan, 2013a), classical switching table–based DTC method presented in Sivaprakasam (2017), and MPTC method presented in Wang et al (2011). Scheme 1 from Sivaprakasam and Manigandan (2013a) is taken for comparison because Scheme 1 uses large and zero voltage vectors that resemble the voltage vectors used in the proposed MPC.…”

Evaluation of Doubly-Fed Wind Turbine With Direct Torque Controller Under Space Vector Modulation and Matrix Transformation

“…The system simulates the active and reactive power vector control scheme of the whole doubly-fed induction generator and the wind turbine. The advantage of this approach is to design a system that is more open to structural changes, can be changed, and can be adapted to multiple operational scenarios at a lower cost; Sivaprakasam (2017) [12] proposed the method of 12-sector direct torque controller for permanent magnet synchronous motor. First of all, the structure of the classical direct torque controller is modified, which provides 27 voltage vectors of different sizes, 6 new switching tables.…”

“…According to the development of science, scientists have various definitions of new energy sources, but wind, solar, and tidal power are known as renewable energy sources, among which wind energy has been favoured by scientists [3]. As wind is one of the meteorological conditions of nature, it has no pollution, is a good green energy, and has the reputation of inexhaustible, so it has great prospects for the development and utilization of wind energy [4]. At present, converting wind energy into electric energy is the most commonly used effective method.…”