Design and Operation of a Phase-Locked Loop with Kalman Estimator-Based Filter for Single-Phase Applications

Brabandere, K. De; Loix, Tom; Engelen, Kurt; Bolsens, B.; Keybus, Jeroen Van den; Driesen, Johan; Belmans, Ronnie

doi:10.1109/iecon.2006.348099

Cited by 94 publications

(76 citation statements)

References 9 publications

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“…Several attempts have been made in the literature to generate an orthogonal signal from an original singlephase signal such as second-order generalized integrator, Kalman filter, and first-order all-pass filter (APF) methods [24][25][26][27]. In this paper, the orthogonal signal is generated based on the reference values of the -and -axes [28,29].…”

Section: Per-phase Control Schemementioning

confidence: 99%

“…Hence, the stability analysis and design of the whole closed-loop system is not straightforward. To successfully cope with this challenge, the stationary frame equivalent model of the PI controller is derived in this section [26,27]. The equivalent model of the used PI controller in the stationary reference frame is depicted in Figure 5.…”

Section: Stationary Reference Frame Representation Of the Pi Controllmentioning

confidence: 99%

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An Improved Control Strategy for a Four-Leg Grid-Forming Power Converter under Unbalanced Load Conditions

Miveh

Rahmat

Mustafa

et al. 2016

Advances in Power Electronics

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This paper proposes an improved multiloop control strategy for a three-phase four-leg voltage source inverter (VSI) operating with highly unbalanced loads in an autonomous distribution network. The main objective is to balance the output voltages of the four-leg inverter under unbalanced load conditions. The proposed control strategy consists of a proportional-integral (PI) voltage controller and a proportional current loop in each phase. The voltage controller and the current control loop are, respectively, used to regulate the instantaneous output voltage and generate the pulse width modulation (PWM) voltage command with zero steady-state tracking error and fast transient response. A voltage decoupling feedforward path is also used to enhance the system robustness. Since the outer voltage loop operates in the synchronous reference frame, tuning and stability analysis of the PI controller is far from being straightforward. In order to cope with this challenge, the stationary reference frame equivalent of the voltage controller in the rotating frame is derived. Subsequently, a systematic design based on a frequency response approach is provided. Simulation results are also carried out using the DIgSILENT PowerFactory software to verify the effectiveness of the suggested control strategy.

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Section: Per-phase Control Schemementioning

confidence: 99%

Section: Stationary Reference Frame Representation Of the Pi Controllmentioning

confidence: 99%

An Improved Control Strategy for a Four-Leg Grid-Forming Power Converter under Unbalanced Load Conditions

Miveh

Rahmat

Mustafa

et al. 2016

Advances in Power Electronics

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“…An adaptive filter structure, based on the generalized integrator (GI) structure [10], named second order generalized integrator (SOGI) was formally presented in [11]- [12]. The adaptive filter based on the SOGI is shown in Fig.…”

Section: The Second Order Generalized Integratormentioning

confidence: 99%

Multiple second order generalized integrators for harmonic synchronization of power converters

Rodriguez

Luna

Etxeberria

et al. 2009

2009 IEEE Energy Conversion Congress and Exposition

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--This paper presents a new frequency-adaptive synchronization method for grid-connected power converters which allows estimating not only the positive-and negativesequence components of the power signal at the fundamental frequency, but also other sequence components at multiple frequencies. The proposed system is called the MSOGI-FLL since it is based on a decoupled network consisting of multiple second order generalized integrators (MSOGI) which are frequency-adaptive by using a frequency-locked loop (FLL). In this paper, the MSOGI-FLL is analyzed and its performance is evaluated by both simulations and experiments.

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“…When it comes to use the synchronous coordinate conversion, dc offset could be removed by adding LPFs on synchronous d-axis voltage [12,13]. However, estimated grid frequency and synchronous dq-axis voltages have the same ripples with the grid frequency.…”

Section: Introductionmentioning

confidence: 99%

Improved DC Offset Error Compensation Algorithm in Phase Locked Loop System

Park¹,

Jung²

2016

Journal of Electrical Engineering and Technology

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-This paper proposes a dc error compensation algorithm using dq-synchronous coordinate transform digital phase-locked-loop in single-phase grid-connected converters. The dc errors are caused by analog to digital conversion and grid voltage during measurement. If the dc offset error is included in the phase-locked-loop system, it can cause distortion in the grid angle estimation with phase-locked-loop. Accordingly, recent study has dealt with the integral technique using the synchronous reference frame phase-locked-loop method. However, dynamic response is slow because it requires to monitor one period of grid voltage. In this paper, the dc offset error compensation algorithm of the improved response characteristic is proposed by using the synchronous reference frame phase-locked-loop. The simulation and the experimental results are presented to demonstrate the effectiveness of the proposed dc offset error compensation algorithm.

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Design and Operation of a Phase-Locked Loop with Kalman Estimator-Based Filter for Single-Phase Applications

Cited by 94 publications

References 9 publications

An Improved Control Strategy for a Four-Leg Grid-Forming Power Converter under Unbalanced Load Conditions

An Improved Control Strategy for a Four-Leg Grid-Forming Power Converter under Unbalanced Load Conditions

Multiple second order generalized integrators for harmonic synchronization of power converters

Improved DC Offset Error Compensation Algorithm in Phase Locked Loop System

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