Grid active power filters using cascaded multilevel inverters with direct asymmetric switching angle control for grid support functions

Chu, Yongbin; Wang, Shuo; Crosier, Russell

doi:10.1109/apec.2013.6520472

Cited by 11 publications

(8 citation statements)

References 13 publications

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“…A common method to reduce the switching losses is considering the switching frequency factor, as in [10][11][12][13][14][15][16][17]. In [10][11][12][13][14], switching frequency is constant, but it has been tried to reduce it as much as possible. In [10], in an active filter with cascaded H-bridge (CHB) multi-level inverter, switching frequency of H-bridges has been considered equal to grid frequency.…”

Section: Introductionmentioning

confidence: 99%

High‐efficiency voltage source converter with low switching power losses for application in islanded microgrids

Hasari¹,

Salemnia²,

Hamzeh³

2017

IET Renewable Power Generation

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In the conventional inverter, the switching power losses cause the inverter efficiency to decrease at high switching frequencies. In this study, a new structure of a single-phase voltage-source inverter with low switching losses is proposed, for application in islanded AC grids. This converter is composed of two single-phase series inverters, with different switching frequencies. The main feature of the proposed converter is that, the total losses of the proposed converter are fewer than the total losses of a conventional single-phase inverter, at high switching frequencies. The proposed converter is designed by the appropriate power transistors in the market. By providing a suitable method for calculating the transistor power losses, the switching and conduction losses of the proposed converter are calculated, and compared with losses of a conventional singlephase inverter. The mathematical model of the proposed converter is derived and used along with root-locus and frequencyresponse analysis, for designing the controllers. The performance of the proposed converter has been assessed using the simulation studies in MATLAB/SIMULINK software environment.

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Section: Introductionmentioning

confidence: 99%

High‐efficiency voltage source converter with low switching power losses for application in islanded microgrids

Hasari¹,

Salemnia²,

Hamzeh³

2017

IET Renewable Power Generation

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“…1. MATLAB's Genetic Algorithm (GA) toolbox is adopted to find the solution [1,12]. The Objective Function (OF) adopted is max 1…”

Section: A Voltage Phasor Diagram and Four Quadrant Modulationmentioning

confidence: 99%

“…Half-wave symmetry modulation is adopted to compensate the odd harmonics in the power system with the minimum number of equations [1,5]. The topology and waveform is as fig.…”

Section: A Voltage Phasor Diagram and Four Quadrant Modulationmentioning

confidence: 99%

“…One of the critical problems to apply SHE / SHC is that the solution range is very limited and in an irregular shape [6,7]. Conventional solutions including only adapting the SHE / SHC method in the regions that effective solution exists [1], or sacrificing the number of harmonics to be controlled where effective solution does not exist [5,8]. Some authors proved that non-symmetry modulation [9] and unequal DC-link voltage [10] can extend the solution range, but these method would increase increasing number of equations that need to be solved, and increase the system complexity.…”

Section: Introductionmentioning

confidence: 99%

“…The Selective Harmonic Compensation / Injection [1][2][3][4][5] (SHC or SHI) is extended from the SHE method, but instead of eliminating the specific order harmonics, SHC method can control the magnitude and phase of the selected order harmonics so that it can draw / generate active power from / to the grid, compensate reactive power [1,5], compensate high frequency harmonics [3] with line switching frequency. One of the critical problems to apply SHE / SHC is that the solution range is very limited and in an irregular shape [6,7].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A four-quadrant modulation technique for Cascaded Multilevel Inverters to extend solution range for Selective Harmonic Elimination / Compensation

Zhao

Wang

2016

2016 IEEE Applied Power Electronics Conference and Exposition (APEC)

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One critical drawback of Selective Harmonic Elimination (SHE) and Compensation (SHC) in CascadedMultilevel Inverter (CMI) topology is that the solution range is very limited and in an irregular shape. As a result, the compensation capacity and system parameters are hard to determine. This paper proposed a voltage phasor diagram to explain the reason of the limited solution range, proposed a fourquadrant modulation method to achieve an enlarged and regular solution range, and discussed guidelines for system parameters design. Simulation and experimental results verified the method's effectiveness.

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Investigating the influence of semiconductor device voltage drops on harmonic and reactive current compensation with cascaded multilevel inverters

Wang

2014

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

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Grid active power filters using cascaded multilevel inverters with direct asymmetric switching angle control for grid support functions

Cited by 11 publications

References 13 publications

High‐efficiency voltage source converter with low switching power losses for application in islanded microgrids

High‐efficiency voltage source converter with low switching power losses for application in islanded microgrids

A four-quadrant modulation technique for Cascaded Multilevel Inverters to extend solution range for Selective Harmonic Elimination / Compensation

Investigating the influence of semiconductor device voltage drops on harmonic and reactive current compensation with cascaded multilevel inverters

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