Multiple second order generalized integrators for harmonic synchronization of power converters

Rodriguez, P.; Luna, Álvaro; Etxeberria, Ion; Hermoso, Juan Ramon; Teodorescu, Remus

doi:10.1109/ecce.2009.5316279

Cited by 87 publications

(71 citation statements)

References 13 publications

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“…The three phase voltages are measured, filtered, synchronized and transformed to the a * b * coordinate system to easily determine the space vectors for control using fixed point arithmetic on an FPGA. To filter the measurement and synchronize with the grid a sinc 3 filter in combination with the so called mSOGI was used [28], [29]. The three phase currents are transformed to the α-β coordinate system.…”

Section: Fig 4 Graphical Illustration Of the Nomenclature Of An N-lmentioning

confidence: 99%

Direct Current Control for Grid-Connected Diode-Clamped Inverters

Schaefer

Goetze

Hofmann

et al. 2017

IEEE Trans. Ind. Electron.

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Abstract-The accurate control of the line current, robust and dynamic behavior even under distorted grids and other system faults are the most important requirements for grid connected inverters. Applying direct current control to multilevel inverters combines the advantages of both and is an enabling step towards improved inverter performance. Direct current controllers suffer from high complexity at increased level count, which is resolved using geometrical principles and simple analytical calculations for switching vector selection within the space vector diagram. The simplified, novel parametric controller concept is scalable to inverters with arbitrary level count, does not require any switching tables and the new fully symmetric setup guarantees equal switching frequencies among the three phases. The hypotheses are further confirmed on a real hardware test setup on the example of a 3-level NPC inverter hardware and a Xilinx development platform. Experimental results prove the expected behavior of the direct current control under various conditions, shows a general approach to balance the DC-link capacitors of diode-clamped inverters within the theoretical limits and demonstrates the benefits of using Field Programmable Gate Arrays (FPGA) as a controller platform.

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Section: Fig 4 Graphical Illustration Of the Nomenclature Of An N-lmentioning

confidence: 99%

Direct Current Control for Grid-Connected Diode-Clamped Inverters

Schaefer

Goetze

Hofmann

et al. 2017

IEEE Trans. Ind. Electron.

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“…The differential equation model in (23) states that the PD is a linear time variant system. Since the analytical solution is highly complex and hard to obtained, a computer-aided method is proposed to evaluate the performance of the PD.…”

Section: B Phase Detector Evaluationmentioning

confidence: 99%

“…As a result, it is necessary to make comparisons among the proposed PLL and the existing PLLs. The SOGI-PLL [13], [22], [23] and the delayed signal PLL [14], [21] are selected for the comparison because of their widespread use in single phase converters. The loop filters in all of the PLLs are identical, i.e.…”

Section: Comparisons With Existing Pllsmentioning

confidence: 99%

A Novel Single Phase Synchronous Reference Frame Phase-Locked Loop with a Constant Zero Orthogonal Component

Li¹,

Wang²,

Xiong³

et al. 2014

Journal of Power Electronics

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A novel single phase Phase-Locked Loop (PLL) is proposed in this paper to accurately and rapidly estimate the instantaneous phase angle of a grid. A conjugate rotating vector pair is proposed and defined to synthesize the single phase signal in the stationary reference frame. With this concept, the proposed PLL innovatively sets one phase input of the PARK transformation to a constant zero. By means of a proper cancellation, a zero steady state phase angle estimation error can be achieved, even under magnitude and frequency variations. The proposed PLL structure is presented together with guidelines for parameters adjustment. The performance of the proposed PLL is verified by comprehensive experiments. Satisfactory phase angle estimation can be achieved within one input signal cycle, and the estimation error can be totally eliminated in four input cycles for the most severe conditions.

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“…To achieve that, several methods have been proposed in the literature. The Dual second order generalized integrator (DSOGI-FLL) methods proposed in [31][32][33] is used to separate the positive and negative sequences (PNSC) of voltage and current. When the proposed method is applied in the DC distribution system.…”

Section: (20) (21)mentioning

confidence: 99%

An overall Control of BDFIG using Direct Power Control for WECS under Unbalanced Grid Voltage Conditions

2018

IJERAT

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Multiple second order generalized integrators for harmonic synchronization of power converters

Cited by 87 publications

References 13 publications

Direct Current Control for Grid-Connected Diode-Clamped Inverters

Direct Current Control for Grid-Connected Diode-Clamped Inverters

A Novel Single Phase Synchronous Reference Frame Phase-Locked Loop with a Constant Zero Orthogonal Component

An overall Control of BDFIG using Direct Power Control for WECS under Unbalanced Grid Voltage Conditions

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