Rapid Tracking of Grid Variables Using Prefiltered Synchronous Reference Frame PLL

Chandrasekaran, S.; Ragavan, K

doi:10.1109/tim.2014.2366275

Cited by 42 publications

(26 citation statements)

References 42 publications

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“…There are different ways to implement a type-1 SRF-PLL. The easiest method is to replace the PI controller in the conventional SRF-PLL with a simple gain [58], [119]. Alternative approaches are using lag filters or laglead filters as the LF is the conventional SRF-PLL [8], [15], [68], [69], [119].…”

Section: A Type-1 Pllsmentioning

confidence: 99%

Three-Phase PLLs: A Review of Recent Advances

Golestan

Guerrero

Vasquez

2017

IEEE Trans. Power Electron.

650

336

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A phase-locked loop (PLL) is a nonlinear negativefeedback control system that synchronizes its output in frequency as well as in phase with its input. PLLs are now widely used for the synchronization of power electronics-based converters and also for monitoring and control purposes in different engineering fields. In recent years, there have been many attempts to design more advanced PLLs for three-phase applications. The aim of this paper is to provide overviews of these attempts, which can be very useful for engineers and academic researchers.

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Section: A Type-1 Pllsmentioning

confidence: 99%

Three-Phase PLLs: A Review of Recent Advances

Golestan

Guerrero

Vasquez

2017

IEEE Trans. Power Electron.

650

336

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“…The 'DP' represents the decoupling transfer function. The expressions of v α and v β are shown in (13). Fig.…”

Section: Mplc-pllmentioning

confidence: 99%

Performance Evaluations of Four MAF-Based PLL Algorithms for Grid-Synchronization of Three-Phase Grid-Connected PWM Inverters and DGs

Han¹,

Luo²,

Chen³

et al. 2016

Journal of Power Electronics

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The moving average filter (MAF) is widely utilized to improve the disturbance rejection capability of phase-locked loops (PLLs). This is of vital significance for the grid-integration and stable operation of power electronic converters to electric power systems. However, the open-loop bandwidth is drastically reduced after incorporating a MAF into the PLL structure, which makes the dynamic response sluggish. To overcome this shortcoming, some new techniques have recently been proposed to improve the transient response of MAF-based PLLs. In this paper, a comprehensive performance comparison of advanced MAFbased PLL algorithms is presented. This comparison includes HPLL, MPLC-PLL, QT1-PLL, and DMAF-PLL. Various disturbances, such as grid voltage sag, voltage flicker, harmonics distortion, phase-angle and frequency jumps, DC offsets and noise, are considered to experimentally test the dynamic performances of these PLL algorithms. Finally, an improved positive sequence extraction method for a HPLL under the frequency jumps scenario is presented to compensate for the steady-state error caused by non-frequency adaptive DSC, and a satisfactory performance has been achieved.

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“…advanced pre-filtering techniques, most available SRF-PLL structures are not able to achieve a dynamic response faster than 20 ms. One exception could be a type-1 PLL, which only utilizes one integrator by eliminating the internal PI controller. This controller possess fast dynamic behaviour but is unable to track the grid during any frequency drifts due to the elimination of the PI controller [12]. Instead of attenuating unwanted effects from the input using filters, which decrease the dynamic performance, a delayed signal cancellation method can be used, which block certain signals rather than attenuating them [13].…”

Section: Introductionmentioning

confidence: 99%

A Synchronization Method for Grid Converters with Enhanced Small-Signal and Transient Dynamics

Steinkohl

Taul

Wang

et al. 2018

2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL)

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An increasing integration of voltage source based renewable energy systems into the power system is a global trend, that has led to requirements for converter control during low voltage and fault situations. To guarantee stable operation, grid synchronization is a key factor, which greatly influences the stability and ride-through performance of the converter. This paper proposes an improved grid synchronization technique, which enhances the transient performance of the converter under severe grid conditions, such as three phase faults and voltage phase jumps. This is achieved by combining a low bandwidth Synchronous Reference Frame Phase-Locked Loop (SRF-PLL) together with a feed-forward term. This combination effectively results in a synchronization unit including high noise immunity, e.g. enhanced small-signal performance and a fast dynamic response with a phase tracking capability below 5 ms. The proposed synchronization unit is tested during phase jumps and symmetrical three-phase faults to analyze its performance, which is validated through simulations and experimental results.

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Rapid Tracking of Grid Variables Using Prefiltered Synchronous Reference Frame PLL

Cited by 42 publications

References 42 publications

Three-Phase PLLs: A Review of Recent Advances

Three-Phase PLLs: A Review of Recent Advances

Performance Evaluations of Four MAF-Based PLL Algorithms for Grid-Synchronization of Three-Phase Grid-Connected PWM Inverters and DGs

A Synchronization Method for Grid Converters with Enhanced Small-Signal and Transient Dynamics

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