A Selective Harmonic Amplification Method for Reduction of kVA Rating of Current Source Converters in Shunt Active Power Filters

Terciyanli, A.; Ermiş, M.; Çadırcı, I.

doi:10.1109/tpwrd.2010.2078838

Cited by 36 publications

(14 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Triplen harmonics, such as the 3rd, 9th, and 15th, will be cancelled out in line-to-line voltage waveforms although they are present in line-to-neutral voltage waveforms. There will be no even-order characteristic power system harmonics, such as the 2nd, 4th, 6th, 8th, etc., in line-to-neutral voltage waveforms because of the quarter-wave odd symmetry [24,27,35,36]. The converter's switching frequency fc can be expressed as in (1) for TLN1 and TLN2 techniques:…”

Section: Switching Techniques For Shemmentioning

confidence: 99%

On-Line Application of SHEM by Particle Swarm Optimization to Grid-Connected, Three-Phase, Two-Level VSCs with Variable DC Link Voltage

2018

View full text Add to dashboard Cite

This paper is devoted to an otablen-line application of the selective harmonic elimination method (SHEM) to three-phase, two-level, grid-connected voltage source converters (VSCs) by particle swarm optimization (PSO). In such systems, active power can be controlled by the phase shift angle, and reactive power by the modulation index, against variations in the direct current (DC) link voltage. Some selected, low-odd-order harmonic components in the line-to-neutral output voltage waveforms are eliminated by calculating the SHEM angle set continuously through the developed PSO algorithm on field-programmable gate array (FPGA)-based computing hardware as the modulation index is varied. The use of powerful computing hardware permits the elimination of all harmonics up to 50th. The cost function of the developed PSO algorithm is formulated by using an optimum number of particles to obtain a global optimum solution with a small fitness value in each half-cycle of the grid voltage and then updating the SHEM angle set at the beginning of the next full-cycle. Since the convergence of the solution to a global minimum point depends upon the use of correct initial values especially for a large number of SHEM angles, a generalized initialization procedure is also described in the paper. Theoretical results are verified initially using hardware co-simulation. They are also tested using a small scale photovoltaic (PV) supply prototype developed specifically for this purpose. It is demonstrated that the 5th, 7th, 11th, 13th, 17th, and 19th sidekick harmonics are eliminated by on-line calculation of seven SHEM angles through the developed PSO algorithm on a moderately powerful XEM6010-LX150, USB-2.0-integrated FPGA module. All control and protection actions and the calculation of SHEM angles are achieved by a single FPGA chip and its peripherals within the FPGA board.

show abstract

Section: Switching Techniques For Shemmentioning

confidence: 99%

On-Line Application of SHEM by Particle Swarm Optimization to Grid-Connected, Three-Phase, Two-Level VSCs with Variable DC Link Voltage

2018

View full text Add to dashboard Cite

show abstract

“…, , load load load Figure 3 Flow diagram of the harmonic compensation selection algorithm As seen in Figure 4 the load current _ abc load i is measured and fed to the multiple synchronous reference frames [5]- [8]. Each frame provides the d-q components of each harmonic plus an ac signal.…”

Section: The Srf Algorithm For Individual Harmonic Control In a Vsimentioning

confidence: 99%

Dynamic mitigation of grid current harmonics using the power sphere concept in voltage source inverters

Campos‐Gaona

Peña-Alzola

Morales

et al. 2016

2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

View full text Add to dashboard Cite

Voltage source inverters (VSI) connected to intermittent renewable sources may have periods of low active power production. When the power generated at the source is below the power rating of the inverter, the remaining unused rating of the inverter can be used to compensate the harmonic distortion in the grid. This paper presents the realization of a VSI with Active Power Filter capabilities, which is able to control the compensation of individual load harmonics up to the 17 th as a function of the variation of the unused rating of a VSI. In order to select the number and magnitude of harmonic to mitigate, the paper analyses the utilization rating of the VSI in light of the power theory used in the latest IEEE standards. This analysis results in the derivation of a novel "power sphere" concept that is helpful to establish the magnitude of harmonic compensation needed to fully utilize the unused rating of a VSI at a given time. The performance of the selective compensation of individual harmonics in a VSI is validated in simulations and in a 3-phase 1kW DSC-controlled experimental platform.

show abstract

“…Figure 1. Owing to the nature of the current-and voltagesourced inverters, insulated gate bipolar transistors (IGBTs) for use in voltage-sourced SAPFs are produced by many semiconductor companies because they exhibit an antishunt diode structure, they can be produced easily, and their losses can be optimized [16]. As the loss of the reactor in the DC linkage of a current-sourced inverter is higher than that of the capacitor in a voltage-sourced inverter, voltage-sourced inverters are used more commonly.…”

Section: Passive Vs Active Filtersmentioning

confidence: 99%

Active filter solutions in energy systems

Rüstemli¹,

CENGİZ²

2015

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

Recent developments in power electronics have increased the usage of nonlinear loads in energy systems.With increases in the usage of semiconductor-sourced nonlinear loads, the adverse effects of harmonics-sensitive loads (e.g., protection control circuits and circuit breakers) have also increased. Generally, the negative effects of harmonics in power systems include the following: increased power losses; motor, generator, and transformer overheating; faulty operation of measurement and protection systems; lifetime shortening of electrical components; and parallel and series resonance problems. Therefore, harmonics has become a serious problem in current power electronics systems. However, harmonics can be reduced, particularly through drainage using filters. In this study, some power losses were detected in different facilities in the city of Van, Turkey, on the basis of the variable measurements (e.g., instantaneous electrical values, harmonics, flow, and voltage waveforms) obtained using ZERA MT 310 power analyzers. The harmonics causing these power losses were examined. Some simulation results for active filters were evaluated, and the overall effects of the harmonics are discussed. Shunt active power filter (SAPF) simulation was conducted using Simplorer 6.0, which is known to produce successful results in power electronics simulation applications. SAPF simulation requires the use of measurement points. This utilization of SAPF simulation has demonstrated that voltage drop and power loss in power distribution systems can be reduced. However, it was found that owing to their structure, semiconductor components produce harmonics and consume power.

show abstract

A Selective Harmonic Amplification Method for Reduction of kVA Rating of Current Source Converters in Shunt Active Power Filters

Cited by 36 publications

References 28 publications

On-Line Application of SHEM by Particle Swarm Optimization to Grid-Connected, Three-Phase, Two-Level VSCs with Variable DC Link Voltage

On-Line Application of SHEM by Particle Swarm Optimization to Grid-Connected, Three-Phase, Two-Level VSCs with Variable DC Link Voltage

Dynamic mitigation of grid current harmonics using the power sphere concept in voltage source inverters

Active filter solutions in energy systems

Contact Info

Product

Resources

About