Modulation strategies for an open-end winding induction machine fed by a two-output indirect matrix converter

Abstract

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SVPWM Method for Multilevel Indirect Matrix Converter with Eliminate Common Mode Voltage

“…Once the switching states of the rectifier stage have been decided, the SVPWM is applied to control the three-level T-Type NPC inverter. With the three-phase load, the system variables (voltages or currents) in abc coordinates can be transformed to αβ coordinates by using the transformation defined in (5).…”

“…Compared to the back-to-back converter, the MC has several attractive features such as the simple and compact power circuit due to the lack of bulky electrolytic capacitors, sinusoidal input and output currents, controllable input power factor with any load, bidirectional power flow capability, long lifetime and high reliability [1][2][3]. Due to these advantages which the MC offers, it attracts many researchers to study and consider it for specialized applications in industry, such as adjustable speed drives, wind generation system, utility supply and ground power supply unit for aircraft servicing [4][5][6][7]. However, MC still has some limitations, e.g., the voltage transfer ratio constraint with a maximum value of 0.866, and a great sensitivity to the power source distortion due to the direct connection between input and output sides.…”

“…C are three-phase output voltage and V α , V β are corresponding voltage sequence in αβ plane given by Clark transform.From(5), the size of each vector can be calculated and given in…”

New Analysis Model of Stator Open Phase Faults in a Five-Phase Induction Motor

“…The elements of a training system are interdependent so that a failure in an element can cause the total shutdown of the system and this type of situation has a significant cost in some applications. Several defects can appear on the electric trainings (as shown in Figure 1), they are distributed in the papers [8][9][10][11]:…”

“…One of the advantages of power segmentation at the power converter, besides energy quality, is the fault tolerance. In fact, when a power electronics switch is lost due to a malfunction of the control or wear of the control, the system can operate with reduced capacity, which is called degraded mode [11][12][13]. During this paper, some defects of a polyphase drive system will be studied.…”