Three-phase three-level voltage source inverter with low switching frequency based on the two-level inverter topology

2007 ◽  
Vol 1 (4) ◽  
pp. 637 ◽  
Author(s):  
E.A. Mahrous ◽  
N.A. Rahim ◽  
W.P. Hew
Keyword(s):  
Voltage Source ◽  
Switching Frequency ◽  
Voltage Source Inverter ◽  
Three Phase ◽  
Inverter Topology

scholarly journals Common-Mode Reduction SVPWM for Three-Phase Motor Fed by Two-Level Voltage Source Inverter

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3884
Author(s):  
Jian Zheng ◽  
Mingcheng Lyu ◽  
Shengqing Li ◽  
Qiwu Luo ◽  
Keyuan Huang
Keyword(s):  
High Frequency ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Voltage Source ◽  
Switching Frequency ◽  
Voltage Source Inverter ◽  
Large Magnitude ◽  
Common Mode ◽  
Common Mode Voltage ◽  
Three Phase

Aiming at the problem of large magnitude and high frequency of common-mode voltage (CMV) when space vector pulse width modulation (SVPWM) is used in a three-phase motor fed by a two-level voltage source inverter, a common-mode reduction SVPWM (CMRSVPWM) is studied. In this method, six new sectors are obtained by rotating six sectors of conventional SVPWM by 30°. In odd-numbered sectors, only three non-zero vectors with odd subscripts are used for synthesis, while in even-numbered sectors, only three non-zero vectors with even subscripts are used for synthesis. The actuation durations of three non-zero vectors in each switching period in each sector are given. Simulation and experimental results show that, compared with the conventional SVPWM, the CMV magnitude of CMRSVPWM is reduced by 66.67% and the CMV frequency of CMRSVPWM is reduced from the original switching frequency to the triple fundamental frequency. At the same time, the current, torque and speed of the motor are still good.

scholarly journals Cascaded H-Bridge MLI and Three-Phase Cascaded VSI Topologies for Grid-Connected PV Systems with Distributed MPPT

2019 ◽  
Vol 2019 ◽  
pp. 1-22 ◽  
Author(s):  
Abdullah M. Noman ◽  
Khaled E. Addoweesh ◽  
Ayman A. Alabduljabbar ◽  
Abdulrahman I. Alolah
Keyword(s):  
Multilevel Inverter ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Pv Systems ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Three Phase ◽  
Power Point ◽  
Cascaded Multilevel Inverter ◽  
Inverter Topology

Cascaded multilevel inverter topologies have received a great deal of attention for grid-connected PV systems. In this paper, three-cascaded multilevel inverter configurations are proposed for grid-connected PV applications. These are the three-phase cascaded H-bridge multilevel inverter topology, three-phase cascaded voltage-source inverter topology using inductors, and three-phase cascaded voltage-source inverter topology using coupled transformers. Distributed maximum power point tracking (MPPT) of PV modules using perturbation and observation algorithm is used for all presented topologies. In all presented configurations, each PV module is connected to one DC-DC isolated Ćuk converter for best MPPT achievement. Simulation is achieved by using the SIMULINK environment. The simulation results show that the three proposed topologies function well in improving the grid’s power quality. The grid currents are kept in phase with the grid voltage to ensure unity power factor, and the THD of the grid currents are within the acceptable range. The proposed topologies are experimentally implemented in the lab, and the switching pulses are generated with the help of the MicroLabBox data acquisition system. Comparing the three topologies according to the number of switches, voltage, and current stresses on switches and THD of the generated voltages and grid currents and according to the efficiency has been achieved in this paper, both experimentally and by simulation. The simulation and experimental results and comparisons are presented to verify the proposed topologies’ effectiveness and reliability.

New Three-Phase Symmetrical Multilevel Voltage Source Inverter

2015 ◽  
Vol 5 (3) ◽  
pp. 430-442 ◽  
Author(s):  
Ahmed Salem ◽  
Emad M. Ahmed ◽  
Mohamed Orabi ◽  
Mahrous Ahmed
Keyword(s):  
Voltage Source ◽  
Voltage Source Inverter ◽  
Three Phase
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