Indirect Vector Control of Induction Motor Fed by a Five-level Cascaded H-bridge Inverter using the PV generators

摘要

Within the framework of this paper, the authors present a work on the digital control of an induction motor fed by a Five-level Cascaded H-bridge Inverter (FCHI) using an Indirect Field-Oriented Control (IFOC). The output voltages of cascaded-boost-converters are applied to the Multi-level cascaded H-bridge inverter. The DC output from the PV panel is boosted using cascaded-boost- converters. Actually, (FCHI) is suitable with the use of PV sources. It is generally used to train high-power asynchronous motors and drives machines that run at high speed. The advantage of a cascaded inverter is the flexibility of the circuit arrangement. In addition to this, adding clamped diodes or voltage balancing capacitors is not necessary. Indirect Vector Control is developed for this power scheme and a decoupled switching algorithm is used to implement PWM. A boost converter initially appears to be most promising for a series connected integrated dc–dc converter. This structure, which is controlled by MPPT, can also decrease losses by shading. The Perturb and Observe algorithm is used to extract maximum power from the PV. Design procedure and control strategy are presented in details. The results are observed using MATLAB/SIMULINK software.