Research on Output Voltage Waveform Control of Three Level Inverter under Unbalanced Load

2021 ◽  
Author(s):  
Yang Wang ◽  
Quan Chen ◽  
Cungang Hu ◽  
Baoshun Yang
Keyword(s):  
Output Voltage ◽  
Voltage Waveform ◽  
Waveform Control ◽  
Unbalanced Load

Research of Simulation in the Main Circuit of Static Var Generator Based on Cascade H-Bride

2013 ◽  
Vol 392 ◽  
pp. 409-412
Author(s):  
Xian Bin Dai ◽  
Xiao Hua Yuan ◽  
Wei Du
Keyword(s):  
Output Voltage ◽  
Power Index ◽  
Matlab Simulation ◽  
Voltage Waveform ◽  
Distortion Factor ◽  
Harmonic Content ◽  
Three Phase ◽  
Static Var Generator ◽  
Waveform Distortion ◽  
Working Principle

This paper introduces the working principle of the research of simulation in the main circuit of Static Var Generator based on Cascade H-Bride and takes the three-phase Static Var Generator based on cascade H-Bride with rated capacity 10kVar,rated voltage 380V for example to proceed the MATLAB simulation. The research shows that the more amount of cascade H-Bride, the more number of output voltage levels in the main circuit of Static Var Generator, the smaller value of voltage waveform distortion factor, and the less harmonic content be inject in electric network, which improves power index.

Simulation of output voltage waveform on thin film magnetoresistive sensor

2004 ◽  
Author(s):  
Yu Shi ◽  
Huaiwu Zhang ◽  
Yingli Liu ◽  
Yulan Jing ◽  
Baoyuan Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Output Voltage ◽  
Voltage Waveform ◽  
Magnetoresistive Sensor

scholarly journals Standalone Operation of Modified Seven-Level Packed U-Cell (MPUC) Single-Phase Inverter

Electronics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 268 ◽  
Author(s):  
Ali Shojaei ◽  
Bahram Najafi ◽  
Hani Vahedi
Keyword(s):  
Output Voltage ◽  
Single Phase ◽  
Multilevel Inverter ◽  
Switching Frequency ◽  
Voltage Waveform ◽  
Multilevel Inverters ◽  
Design Considerations ◽  
Single Phase Inverter ◽  
Load Types ◽  
Switch Voltage

In this paper the standalone operation of the modified seven-level Packed U-Cell (MPUC) inverter is presented and analyzed. The MPUC inverter has two DC sources and six switches, which generate seven voltage levels at the output. Compared to cascaded H-bridge and neutral point clamp multilevel inverters, the MPUC inverter generates a higher number of voltage levels using fewer components. The experimental results of the MPUC prototype validate the appropriate operation of the multilevel inverter dealing with various load types including motor, linear, and nonlinear ones. The design considerations, including output AC voltage RMS value, switching frequency, and switch voltage rating, as well as the harmonic analysis of the output voltage waveform, are taken into account to prove the advantages of the introduced multilevel inverter.

The Control Technology of the Z-Source Three-Phase Four-Leg Inverter Based on Computer Simulation

2014 ◽  
Vol 981 ◽  
pp. 688-694
Author(s):  
Ming Su ◽  
Xue Yan Ma ◽  
Yan Sun
Keyword(s):  
Computer Simulation ◽  
Output Voltage ◽  
Control Method ◽  
Control Technology ◽  
Modulation Technique ◽  
Three Phase ◽  
Unbalanced Load ◽  
Zero Sequence ◽  
Current Flows

Z-source inverter can boost the voltage of the DC-side, allow the two switches of the same leg conducting at the same time and it has some other advantages. The zero-sequence current flows through the fourth leg of the three-phase four-leg inverter so the three-phase four-leg inverter can work with unbalanced load. This paper presents a Z-source three-phase four-leg inverter which combines a Z-source network with three-phase four-leg inverter. The circuit uses simple SPWM modulation technique and the fourth leg uses fully compensated control method. The inverter can maintain a symmetrical output voltage when the proposed scheme under the unbalanced load.

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