تجزیه و تحلیل عملکرد از DFIM تغذیه شده با مبدل ماتریس و معکوس کننده چند سطحی

In this paper, we study the performance of a doubly fed induction machine when its stator and rotor are respectively fed by a matrix converter and a multi level inverter. For this, we first present the structures and models of the machine, the multi level inverter and matrix converter. Then, using simulation analysis, we proceed to test the rate of harmonic distortion of the stator currents obtained for the two considered configurations. The obtained simulation results by numerical simulations are shown and analyzed.

Today, the growing interest of the doubly fed induction machine (DFIM) is due to its applications for renewable energy generator or motor for industrial applications. It offers the accessibility to its rotor and thus the possibility of a power converter as well as the side of the stator side of the rotor. Some studies make it a serious competitor to several electric machines, especially the classic squirrel machine. Indeed, in wind energy, DFIM has many advantages: the converter connected to the rotor frame is sized to a third of the rated rotor losses in the semi-conductor is low, etc. For motor applications, the induction machine occupies the first place. However, the DFIM fed by two present converters, especially for applications of great power performances, motor over speed (up to twice the rated speed) without demagnetization, good performance at very low speed operation without speed sensor, etc. In addition, DFIM with its dual power offers several possibilities for reconfiguring the operating mode of the machine. Indirect frequency conversion using a cascade rectifier–inverter is more used than the direct conversion. It is desirable to replace the first conversion with compact converter, while maintaining good waveform input/output and the possibility of adjusting the power factor at the entrance. In recent years, research advances in power electronics have enabled the emergence of a matrix converter (MC) for converting direct AC/AC. Today, the MC has become an important research and more attractive by many researchers in the field of training or variable-speed generation with these advantages over conventional converters such as cyclo-converter the rectifier–inverter cascade. In the studies of the matrix converter, there are control strategies mainly adopted to control the matrix converter. The MC has recently been the subject of lots of research for its simple topology, possibility of greater power density due to the absence of a large DC link capacitor and easy control of the input power factor [1] and [2]. The first method based on Venturini modulation and the second on space vector modulation. In this paper we have used the method Least Mean Square Error (LMSE). This method has a unique advantage over others, which is reducing the total harmonic distortion reduced. In this paper, we present the modeling of DFIM and simulation results for the considered machine when it is fed with a multi-level inverter and a matrix converter.

In this paper, we recalled the structure of the DFIM and its mathematical model. This model is nonlinear and strongly coupled. To overcome this difficulty, we turned to Park transformation. The simulation results are satisfactory. The machine is fed by three-phase inverter for three-level PWM control, and ultimately we are interested in feeding the DFIM by matrix converters whose performances are unquestionable, and comparing the stator current delivered by a stator side DFIM fed by a three-level inverter PWM control with the stator current delivered by the same DFIM fed by a matrix converter. We found that the flow has improved in the second feeding compared to the first dimension THD and amplitude score. Time and frequency analyzes have shown better performance when the doubly def induction machine is fed by a matrix converter.