Control of Grid-Connected Inverters Using Adaptive Repetitive and Proportional Resonant Schemes

Abusara, Mohammad; Sharkh, Suleiman M.; Zanchetta, Pericle

doi:10.6113/jpe.2015.15.2.518

Cited by 11 publications

(10 citation statements)

References 27 publications

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“…The controller's bandwidth ω c reflects the ability to track the input signal. Therefore, the system should have a larger bandwidth in order to enhance the dynamic response characteristics [20], [21]. However, high frequency interference noise such as the switching frequency affects the system's stability when ω c increases.…”

Section: ( ) a S A S A G S B S B S B S B S B S B S Bmentioning

confidence: 99%

“…The transfer function under the α-β plane of a PI regulator achieved by a positive or negative-sequence is computed via the usage of the frequency shift adopting internal model control, and the optimized state transformation or frequency domain approach of a PR regulator is presented, which directly regulates the overall current, including both the positive and negative components under stationary αβ coordinates [21], [30]. An ideal PR regulator has an infinite gain and a 180° phase shift at the fundamental frequency ω 0 , and it has little phase shift and gain except for ω 0 .…”

Section: Robustness Design Of the Current Regulatormentioning

confidence: 99%

See 1 more Smart Citation

An Inductance Voltage Vector Control Strategy and Stability Study Based on Proportional Resonant Regulators under the Stationary αβ Frame for PWM Converters

Sun¹,

Wei²,

Gao³

et al. 2016

Journal of Power Electronics

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The mathematical model of a three phase PWM converter under the stationary αβ reference frame is deduced and constructed based on a Proportional-Resonant (PR) regulator, which can replace trigonometric function calculation, Park transformation, real-time detection of a Phase Locked Loop and feed-forward decoupling with the proposed accurate calculation of the inductance voltage vector. To avoid the parallel resonance of the LCL topology, the active damping method of the proportional capacitor-current feedback is employed. As to current vector error elimination, an optimized PR controller of the inner current loop is proposed with the zero-pole matching (ZPM) and cancellation method to configure the regulator. The impacts on system's characteristics and stability margin caused by the PR controller and control parameter variations in the inner-current loop are analyzed, and the correlations among active damping feedback coefficient, sampling and transport delay, and system robustness have been established. An equivalent model of the inner current loop is studied via the pole-zero locus along with the pole placement method and frequency response characteristics. Then, the parameter values of the control system are chosen according to their decisive roles and performance indicators. Finally, simulation and experimental results obtained while adopting the proposed method illustrated its feasibility and effectiveness, and the inner current loop achieved zero static error tracking with a good dynamic response and steady-state performance.

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Section: ( ) a S A S A G S B S B S B S B S B S B S Bmentioning

confidence: 99%

Section: Robustness Design Of the Current Regulatormentioning

confidence: 99%

An Inductance Voltage Vector Control Strategy and Stability Study Based on Proportional Resonant Regulators under the Stationary αβ Frame for PWM Converters

Sun¹,

Wei²,

Gao³

et al. 2016

Journal of Power Electronics

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show abstract

“…From (9), the output impedance reflecting the proposed control structure is obtained as per Equation (10).…”

Section: Proposed Single-loop Voltage Control Strategy With the Activmentioning

confidence: 99%

“…In terms of the control structure, various control algorithms have been proposed. Among them, repetitive controllers have been popularly employed in UPS and grid-tied inverter applications, because periodic voltage error can be significantly reduced [10][11][12][13]. In [14], the single-loop direct repetitive control strategy was proposed.…”

Section: Introductionmentioning

confidence: 99%

A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique

et al. 2017

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This paper proposes a single-loop repetitive voltage control strategy which incorporates the active damping control feature for single-phase uninterruptible power supply (UPS) applications. The proposed method reduces the effect of the LC resonant peak, which limits the control bandwidth and deteriorates the stability of the entire control loop by effectively increasing the damping component. Due to the increased stability margin, a repetitive controller working together with a proportional-resonant (PR) controller can be easily adopted. Moreover, the voltage error is minimized even under severe non-linear load conditions. It is confirmed that the proposed single-loop controller achieves excellent and stable voltage regulation performance by evaluating the entire loop-gain of the system and the output impedance. Both the simulation and the experimental results for a 1.5 kW UPS inverter show agree well with the analyses, and the excellence of the proposed method has been verified.

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“…However, the dynamic response of RC is relatively slow because of its one-cycle-delay control. The transfer function of the conventional repetitive control is [26] …”

Section: Proposed Control Strategy Designmentioning

confidence: 99%

Improved discrete sliding mode control strategy for pulse-width modulation rectifier

Tong¹

2018

Turk J Elec Eng & Comp Sci

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An improved sliding mode control utilizing repetitive control (ISMRC) is proposed for a three-phase pulsewidth modulation (PWM) rectifier. The proposed controller integrates the advantages of both sliding mode control (SMC) and repetitive control (RC) by implementing a structure that embeds an RC controller into the equivalent control branch of an SMC controller. Both a simulation and an experiment are conducted to compare the proposed ISMRC controller with a conventional SMC controller. It is demonstrated that the fifth harmonic distortion of the current of the PWM rectifier system is controlled at 3.3%, the power factor is close to the unit, and the effect on the DC bus voltage is effectively restrained. Therefore, the proposed control strategy can improve both the steady-state performance and the dynamic transient response of a PWM rectifier control system effectively, as well as increase the robustness of the system to load disturbances and parametric uncertainties.

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Control of Grid-Connected Inverters Using Adaptive Repetitive and Proportional Resonant Schemes

Cited by 11 publications

References 27 publications

An Inductance Voltage Vector Control Strategy and Stability Study Based on Proportional Resonant Regulators under the Stationary αβ Frame for PWM Converters

An Inductance Voltage Vector Control Strategy and Stability Study Based on Proportional Resonant Regulators under the Stationary αβ Frame for PWM Converters

A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique

Improved discrete sliding mode control strategy for pulse-width modulation rectifier

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