A PIMR-Type Repetitive Control for a Grid-Tied Inverter: Structure, Analysis, and Design

Zhao, Qiangsong; Ye, Yongqiang

doi:10.1109/tpel.2017.2697939

Cited by 68 publications

(40 citation statements)

References 31 publications

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“…A pre-calculated PWM method is given in [19]. A multi-cell cascade inverter structure is introduced in [20] and repetitive control structure is illustrated in [21]- [23]. In all of these structures, the THD value ranges between 5% and 8 % for voltage, and particularly current signals.…”

Section: Introductionmentioning

confidence: 99%

Influence of a Proposed Switching Method on Reliability and Total Harmonic Distortion of the Quasi Z–Source Inverters

et al. 2020

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An Improved Sinusoidal Pulse Width Modulation (ISPWM) technique carried out to obtain pure sine waves for voltage and current signals in Quasi Z-Sourc Inverters (QZSIs) in the load side is given in this study. This switching method can be examined to two and multi-phase approaches simply through the addition of the same controller structure to per phase. This is the main advantage of the proposed converter to obtain higher voltage gains at the output ends of this inverter. The idea is to generate a positive rectified voltage at the output point of the QZSI and positive and negative rectified voltages at the output terminals of the QZSI in two-phase approaches to improve the quality of the output voltage of the F-Bridge Inverter (FBI). These rectified voltages are applied to the Full-Bridge Inverter (FBI) block and pure sine waves to obtain the load current and voltages. 1.34% of the Total Harmonic Distortion (THD) for the output voltage has been reported in the one-phase system while 0.88% of THD has been obtained in the two-phase approach. Besides, the reliability of the QZSI was tested through the Mean Time to Failure (MTTF) analysis with the values of the proposed components. The calculations show a very good result for the long-life of the converter. All experimental and simulations steps have been obtained for the same values of the components to support and confirm the accuracy and correctness of the proposed IMSPW. For the states of single-phase and two-phase converters, a 50 Hz sine-wave with 220 V and 440 V peak to peak amplitude has been acquired. Evaluations of the quality of the voltage and current waveforms related to different active (Resistive, P) and reactive (combination of Resistance and Inductance, QL) loads have been carried out. Experimental results show confirmation for all simulation and mathematical results. INDEX TERMS Sinusoidal pulse width modulation (SPWM), F-bridge inverter (FBI), total harmonic distortion (THD), mean time to failure analysis (MTTFA).

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Section: Introductionmentioning

confidence: 99%

Influence of a Proposed Switching Method on Reliability and Total Harmonic Distortion of the Quasi Z–Source Inverters

et al. 2020

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“…The reduction of output impedance through the application of the internal model principle (IPM) [15] in repetitive [12, 13, 16–19] and resonant [19–23] controllers allows achieving the asymptotic tracking of a sinusoidal reference and the rejection of periodic disturbances produced by the load current. Although these characteristics are adequate for the implementation of inverter control systems used in UPS that operate in islanded mode, in the case of inverters connected in parallel a reduced value of the output impedance can cause high circulating currents as a result of parametric differences [3] while also producing differences in the currents provided to the load by each inverter.…”

Section: Introductionmentioning

confidence: 99%

Implementation of output impedance in single‐phase inverters with repetitive control and droop control

Astrada

Angelo

2020

IET power electron.

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“…In implementations, the existent harmonics of the DC source can introduce more noncharacteristic harmonics because of the finite DC bus capacitance and other realistic applicable conditions. A multicell cascade inverter structure was introduced in [22] and a repetitive control structure was illustrated in [23][24][25]. In all of these structures, the THD value is around 2.23%-8.8% for voltage and especially current signals.…”

Section: Introductionmentioning

confidence: 99%

THD minimization for Z-source-based inverters with a novel sinusoidal PWMswitching method

Ghaderi¹

2019

Turk J Elec Eng & Comp Sci

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This paper presents a modified sinusoidal pulse width modulation (SPWM) switching method for one-phase and investigated two-phase impedance-source inverter structures. The proposed structure generates pulses for a quasi-Z-source converter and this block produces a unilateral voltage sine wave in the block's output. This signal is applied to the inverter as its input wave. For this purpose, the novel SPWM method is proposed for power switches while being switched complementarily. Two power switches are used in the structure to generate the pure sinusoidal output voltage and to minimize total harmonic distortion (THD), which is an essential parameter in inverter design. The results show that the proposed method generates the pure sinusoidal voltage and current signals for resistive and inductive loads and pure voltage and improved current waves for capacitive loads in comparison with existing techniques, since the THD of the output voltage and current signals is strongly affected by the dynamic loads. This method leads to final cost improvement and reduction of the size of the system with fewer number of components, which are essential parameters for renewable energy resource applications. A mathematical model is validated with the 2017a version of MATLAB/Simulink and 1.51% and 1.33% THD values are reported for low and high power loads, respectively, in the one-phase structure and 0.95% and 0.87% in the two-phase system. Finally, a 120 W prototype has been implemented and tested. A sine-wave with 620 Vac peak to peak amplitude and 50 Hz frequency has been gained in the inverter's output and the quality of the voltage and current waveforms has been evaluated for different two 1.8 k Ω and 600 Ω resistive loads in the one-phase structure. Experimental results confirm all mathematical and simulation results.

show abstract

A PIMR-Type Repetitive Control for a Grid-Tied Inverter: Structure, Analysis, and Design

Cited by 68 publications

References 31 publications

Influence of a Proposed Switching Method on Reliability and Total Harmonic Distortion of the Quasi Z–Source Inverters

Influence of a Proposed Switching Method on Reliability and Total Harmonic Distortion of the Quasi Z–Source Inverters

Implementation of output impedance in single‐phase inverters with repetitive control and droop control

THD minimization for Z-source-based inverters with a novel sinusoidal PWMswitching method

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