Abstract: This paper presents a recent popular power inverter which is impedance source or Z-source inverter (ZSI) and the comparison and analysis of two conventional PWM techniques of Z-source inverter. Due to the impedance network it couples inverter main circuit to the power source thus providing special features that can overcome the limitations of traditional voltage source inverter (VSI) ...

This paper demonstrates a perfect controlled DSTATCOM model with a small isolated distribution system to improve power quality of the system in which a linear/nonlinear three-phase load is fed by a small alternator. A hysteresis rule based carrier-less PWM current controller is used to control the DSTATCOM. Three leg IGBT based PWM-VSI is used as VSC with a capacitor in its parallel working as ...

Any industrial or power sector application requires a pulse width modulation (PWM) inverter. Industrial drives in particular are highly concerned with standards. To satisfy the voltage source inverter (VSI) objects, variety of PWM approaches used, including DC input utilizations, suppression higher and lower order harmonics, as well spreading acoustic noise reduction, among others PWMs. One bet...

The Distribution Static Compensator (DSTATCOM) is a compensating device which is used to control the flow of reactive power in the distribution systems. This paper focuses on power quality improvement with DSTATCOM on feeders feeding linear loads, nonlinear loads and DTC induction motor drive. In this paper, effectiveness of DSTATCOM in distribution networks to compensate the load current harmo...

One of the most important drawbacks of the three phases five-level NPC (Neutral Point Clamped) Active Power Filter (APF) is the neutral point balance. As the consequence, the capacitors voltages of the input DC bus of the APF are not equal which constitutes the major limitation for the use of this power converter. In order to stabilize these DC voltages, it is proposed in this paper to study th...

This paper introduces a novel method for fast calculating the electromagnetic forces in interior permanent magnet synchronous machines (IPMSMs) under pulse width modulation (PWM) voltage source inverter (VSI) supply based on small-signal time-harmonic finite element analysis (THFEA), which has been successfully utilized PWM-induced losses silicon steel sheets and magnets. Based THFEA, functiona...

Pulse width modulation based on space vectors (SVPWM) technique has become the most popular and important PWM techniques for three phase voltage source inverters (VSI). In this paper, we present the analysis and realization of SVPWM for variable speed control of AC motor drives, employing Xilinx Spartan 3E FPGA device. The selection of zero vectors and space vector sequence are given and the po...