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In this paper, aimed at the neutral-point potential unbalance of the three-level neutral point clamped inverter, an improved new control scheme about neutral-point potential balance was proposed and a simplified direct torque prediction scheme was used for induction motor fed by three-level inverter. Firstly, stator voltage vectors to be applied at the next time was preselected by the torque prediction...
Matrix converter is a direct AC-AC converter, has received considerable interest as a viable alternative to the conventional back-to-back PWM converter. In this paper, the direct space vector modulation (DSVM) technique is applied to the matrix converter. This technique is considered the best as it achieves the highest voltage transfer ratio (0.866). The performance of 3Phi to 3Phi matrix converter...
This paper establishes the mathematical model of direct torque control (DTC) system of induction motor. Then a realization scheme of fully digitized direct torque control system is introduced with the DSP TMS320F2812 that works as the core control chip and IPM that works as main circuit. The control scheme obtains the switch control signal of inverter with the space voltage vector modulation technology...
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