LPV Control of Current Source Inverter synchronized with the grid

Ghersin, Alejandro S.; Cossutta, Pablo; Aguirre, Miguel Pablo

doi:10.1109/tla.2020.9387674

Cited by 2 publications

(4 citation statements)

References 15 publications

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“…R c and R L are generally large, and the losses caused are relatively low, which are easy to be ignored; however, this part of passive damping has a great influence on current gain and damping. The current loop transfer function G i (s) and equivalent impedance Z g (s) of the CL filter are further equivalent in Equations ( 15) and (16). Passive damping has increased but remains underdamped.…”

Section: Filter Modeling and Analysismentioning

confidence: 99%

“…Energies 2022, 15, 4219 2 of 16 The CSI is different from the VSI and requires a capacitive filter to achieve lateral commutation; however, the CL has inherent resonance and underdamping problems, which easily cause system oscillation. In practice, the equivalent grid impedance at the point of common coupling may change rapidly and widely so that the bandwidth and stability margin are very narrow, which may cause the distortion and oscillation of the grid-connected current.…”

Section: Introductionmentioning

confidence: 99%

“…The combined variable feedback controls can tune not only the resonance frequency but also the damping ratio, and as a result, both the low-order harmonic resonance and the current oscillations can be suppressed. The Linear Parameter Varying control strategy is proposed to solve the problem that the state space estimator suffers from sudden disturbances to reduce grid current harmonics [16]. In [17], A method of closed-loop detection of fault current to determine fault type is proposed, which can achieve accurate fault removal.…”

Section: Introductionmentioning

confidence: 99%

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Modulation and Control Strategy of 3CH4 Combined Current Source Grid-Connected Inverter

Huo

Guo

et al. 2022

Energies

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In this article, a topology based on the single-phase full-bridge is proposed to decouple control of phase current in current source grid-connected inverters. The DC side of this current source inverter topology can operate with a common DC bus or independently, and the AC side can be independently integrated into the three-phase grid or operate in parallel. This topology needs only a simple control logic and phase information to achieve 3-phase current decoupling control, which can accommodate a wide range of voltage fluctuations. Then, dual-carrier driving and hybrid damping correction strategies are designed to achieve flexible combinatorial operation and eliminate the common-mode voltage. Meanwhile, the method is simple and easy to implement in practice. The effectiveness of the proposed algorithm is validated with experiments.

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Section: Filter Modeling and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modulation and Control Strategy of 3CH4 Combined Current Source Grid-Connected Inverter

Huo

Guo

et al. 2022

Energies

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“…To reduce the current harmonics, Poon et al introduced a new control method of carrier phase-shift for distribution of the power system [23]. Ghersin et al presented a linear change control strategy for the inverter, which promotes the output power quality of the inverter, substantially reducing the total harmonic distortion (THD) of current [24]. Prasad et al present the inverter circuit of thirteen levels for green power, thus improving effective power, then reducing THD [25].…”

Section: Introductionmentioning

confidence: 99%

A Novel VFVDC Optimized Full Bridge Inverter Control Strategy for Independent Solar Power Systems

Liu

Lin

et al. 2022

IEEE Access

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This research explored the independent solar power system (ISPS), including the maximum power point tracking (MPPT) technology and the DC (direct current) to AC (alternating current) full-bridge inverter (FBI) control technology. This study combined the perturb and observe (P&O) algorithm based on the output voltage control strategy and the proposed optimized FBI control strategy to the ISPS. The proposed variable frequency and variable duty cycle (VFVDC) optimized FBI control strategy had adjustable frequency and duty cycle. The proposed VFVDC control strategy was compared with the sinusoidal pulse width modulation (SPWM). When the output of FBI was at a low voltage level, the operating frequency was 10 kHz. Conversely, when the FBI gave a high voltage level output, the operating frequency was 1 kHz. This control improved the switching loss of 4 power MOSFETs in the FBI and thus improved the performance with a low harmonic amount. To further verify the explored system, this study used MATLAB to compare the proposed control strategy and SPWM control method. The simulation results verified that the proposed control strategy total harmonic distortion (THD) = 1.02% was better than the SPWM control method THD = 3.23%, then the low pass filter (LPF) volume was reduced. Finally, the actual ISPS was used for actual measurement and verification. The proposed control strategy had a low harmonic level, can operate stably and effectively, and thus be used for the actual fulfillment of electricity needs. INDEX TERMSVariable frequency and variable duty cycle control strategy, maximum power point tracking, solar power systems, full bridge inverter.

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LPV Control of Current Source Inverter synchronized with the grid

Cited by 2 publications

References 15 publications

Modulation and Control Strategy of 3CH4 Combined Current Source Grid-Connected Inverter

Modulation and Control Strategy of 3CH4 Combined Current Source Grid-Connected Inverter

A Novel VFVDC Optimized Full Bridge Inverter Control Strategy for Independent Solar Power Systems

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