Design of Output LCL Filter for 15-level Cascade Inverter

Pastor, Marek; Dudrik, Jaroslav

doi:10.5755/j01.eee.19.8.5394

Cited by 8 publications

(8 citation statements)

References 4 publications

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“…Moreover, magnitude compensation factor ck M and the lead angle kc  for various orders harmonic can be obtained from (13) and (14) which are listed in Table III. From Fig.…”

Section: Simulation and Experiments Resultsmentioning

confidence: 99%

“…Through Clarke inverse transformation, k-order harmonic current reference can be obtained by multiply -1 considered reference direction traditionally. Here magnitude compensation is introduced, where ck M is a compensation factor obtained by (13).…”

Section: Optimization Control Methodsmentioning

confidence: 99%

“…is a complicated procedure and attracts much research attentions [5]- [16]. Most of literature on LCL designing is aimed at applications in grid-connected PWM rectifiers or inverters [5]- [13]. Little literature research design methods in APF applications [16].…”

Section: Introductionmentioning

confidence: 99%

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Generalized Design of Shunt Active Power Filter with Output LCL Filter

Hou

Liu

et al. 2014

ElAEE

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This paper analyses the characteristics of LCL filter in active power filter (APF) and provides an accurate formula to determine the resonant frequency of system. Based on a single-phase equivalent circuit model, a systematic approach to design APF with LCL filter is proposed. Total inductance is determined by the capability of APF. Moreover, damping ratio, resonant frequency and attenuation degree of switching ripples are the most crucial factors to design parameters of LCL filters. A method to consider them comprehensively is provided. Meanwhile, LCL filter deteriorates the compensation effect of APF. To address this problem, a novel control strategy is presented to correct the magnitude and phase of output current. Simulation and experimental results demonstrate the validity of proposed methods.

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“…Moreover, magnitude compensation factor ck M and the lead angle kc  for various orders harmonic can be obtained from (13) and (14) which are listed in Table III. From Fig.…”

Section: Simulation and Experiments Resultsmentioning

confidence: 99%

Section: Optimization Control Methodsmentioning

confidence: 99%

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Generalized Design of Shunt Active Power Filter with Output LCL Filter

Hou

Liu

et al. 2014

ElAEE

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“…VSIs are power devices with high energy conversion efficiency. Nonetheless, by cause of the high switching frequencies the voltage and current output may contain harmful harmonics especially during transition events when the MG switches from a connected to an independent operation [22], resulting in unsafe operating conditions for the connected loads despite the high efficiency of the PCs. A low-pass filter equipped between the output side of the VSI and the loads can attenuate the injection of harmful harmonics caused by the high switching frequencies [4].…”

Section: Introductionmentioning

confidence: 99%

VSI LC filter optimized by a genetic algorithm from connected to island microgrid operation

2021

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In microgrids (MG) with a high penetration of renewable energy sources (RES) power converters are used to regulate the produced energy to a single voltage and frequency reference value across the MG. Adequate incorporation of an LC filter at the output of power electronic devices allows the attenuation of harmful harmonics that can be introduced to the MGs energy bus. By traditional methods, LC filter values can be calculated by means of the power rating, switching frequency, cutoff frequency, and using the bode frequency domain. Nonetheless, in the transition from a connected to an autonomous MG operation, the calculated LC filter can lead to high harmonic injection. As a result, a tuning methodology capable of obtaining the right set of parameters for the LC filter for a transition event can improve the performance of the MG. This work optimizes the LC output parameters with respect to the size of the filter components, the IEEE Std 519-2014, and bandwidth of the filter, within a bounded region of values subjected to performance conditions such as voltage output, and the produced total harmonic distortion (THD) measurements during the transition from a connected to an autonomous operation. In a case study, genetic algorithm optimization is used to obtain the LC filter parameters and compared to a conventional arithmetic methodology to obtain the values of the filter. The optimization results in a set of values that lead to a higher harmonic attenuation after the transition rather than a conventional method using the switching frequency as the main design factor.

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“…The development of LCL filter has been further improved with various control strategies such as resonance current control, feedback linearization and doubleloop control [13,14,15]. The topology of this filter design involves the inverter switching frequency, current ripple limit and inductance level [16].…”

Section: Introductionmentioning

confidence: 99%

Harmonic Mitigation of Grid Connected 5MW Solar PV Using LCL Filter

Chi

Ramachandaramurthy

2014

3rd IET International Conference on Clean Energy and Technology (CEAT) 2014

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With the increase penetration of renewable energy sources such as solar being connected to the utility grid, the use of power converters plays a major role in ensuring maximum power delivered with high efficiency. Though, the usage of power converters indirectly leads to the rise of harmonic content in the distributed system with its switching mechanism for power conversion. Filters are widely used in such situation to maintain a good state of power quality. Lots of research has been carried out to propose filter design methodology. This paper presents the implementation of LCL filter in a grid model with further harmonic attenuation through resonance mitigation. The design of the proposed filters is validated by simulation results in PSCAD software. The results show that the improved design meets the standards parallel to the THD and individual harmonic limits.

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Design of Output LCL Filter for 15-level Cascade Inverter

Cited by 8 publications

References 4 publications

Generalized Design of Shunt Active Power Filter with Output LCL Filter

Generalized Design of Shunt Active Power Filter with Output LCL Filter

VSI LC filter optimized by a genetic algorithm from connected to island microgrid operation

Harmonic Mitigation of Grid Connected 5MW Solar PV Using LCL Filter

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