Analysis of hysteresis current control techniques for three phase PWM rectifiers

Suhara, E M; Nandakumar, M.

doi:10.1109/spices.2015.7091434

Cited by 16 publications

(6 citation statements)

References 6 publications

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“…In order to enable the three-phase current source converter to output sinusoidal grid current and stable DC voltage, the converter adopts the DC side voltage outer loop and the AC side current inner loop. In the double closed-loop control method, the voltage outer loop adopts a PI regulator, and the current inner loop adopts a PR regulator [40][41][42][43][44].…”

Section: Conventional Closed-loop Control Schemementioning

confidence: 99%

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A Novel Circulating Current Suppression for Paralleled Current Source Converter Based on Virtual Impedance Concept

et al. 2022

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The circulating current is one of the important issues for parallel converters. It affects the system stable operation and degrades the power quality. In order to reduce the circulating current of the parallel converter and reduce the harmonic pollution to the power grid, a new circulating current suppression strategy is proposed for the parallel current source converter without any communication line. This strategy is able to realize the current sharing between parallel modules by changing the external characteristics of the parallel modules to thus suppress the circulating current among the parallel current source converters. The proposed control strategy adopts DC-side droop control and AC-side virtual impedance control. The DC-side droop control is used to generate the reference voltage of each parallel module, while the AC-side virtual impedance is used to the circulating current suppression. We performed a time domain test of the parallel converter, and the results show that the proposed control strategy reduced the RMS circulating current of the parallel converter by 50% and effectively reduced the grid-side current THD while ensuring the stable operation of the converter. The effectiveness of the proposed control strategy was, therefore, verified.

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Section: Conventional Closed-loop Control Schemementioning

confidence: 99%

“…side voltage outer loop and the AC side current inner loop. In the double closed-loop control method, the voltage outer loop adopts a PI regulator, and the current inner loop adopts a PR regulator [40][41][42][43][44].…”

Section: Conventional Closed-loop Control Schemementioning

confidence: 99%

A Novel Circulating Current Suppression for Paralleled Current Source Converter Based on Virtual Impedance Concept

et al. 2022

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“…Besides, with current trends towards compactness and connectivity of products, a digital control is ineluctable. Focusing on the current controller, hysteresis control [9], one cycle control (OCC) [10] and phase-shift self-oscillating current controller (PSSOCC) [11] are among the most robust. The hysteresis controller, in its simplest version, shows limitations regarding the control of the maximum switching frequency.…”

Section: Introductionmentioning

confidence: 99%

A New Robust Digital Non-Linear Control for Power Factor Correction—Arc Welding Applications

et al. 2021

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A welding power source is commonly assimilated to a non-linear load. Arc welding market being in full growth, the resulting harmonic pollution is becoming an increasingly difficult problem to ignore. Therefore, the main purpose of this work is to define and implement the most suitable solution for power factor correction in a welding power source. Due to the high non-linearity of the electric arc, the current controller used to control grid current need to show high robustness. Consequently, this paper focuses on the digitization of a very robust Phase-Shift Self-Oscillating Current Controller (PSSOCC), which only exists in its analog version until then, to carry out this task. After quick descriptions of the entire energy conversion chain and the PSSOCC operation principle, a model of the digital PSSOCC is proposed. Then, the quality and the accuracy of the aforementioned model are evaluated and its operating limits are identified. Afterwards, the behavior of the digital controller is studied within a Power Factor Correction (PFC) regulation for several specific arc welding operating modes. Finally, excellent robustness of this new FPGA-based digital current controller, named DPSSOCC, is confirmed on a three-phase Vienna converter test bench.

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“…The reference grid current is generated from the output of the proportional–integral (PI) controller. However, the fixed band hysteresis controller causes variable switching frequency and also makes the filter design complex [24]. So the proposed setup makes use of an adaptive hysteresis controller with a fixed switching frequency and with a reduced switching algorithm which assures converter operation at higher efficiency.…”

Section: Introductionmentioning

confidence: 99%

Adaptive hysteresis based multifunctional electric vehicle charger with a single feedback loop controller

Suhara

Nandakumar

Mathew³

2018

J. eng.

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Analysis of hysteresis current control techniques for three phase PWM rectifiers

Cited by 16 publications

References 6 publications

A Novel Circulating Current Suppression for Paralleled Current Source Converter Based on Virtual Impedance Concept

A Novel Circulating Current Suppression for Paralleled Current Source Converter Based on Virtual Impedance Concept

A New Robust Digital Non-Linear Control for Power Factor Correction—Arc Welding Applications

Adaptive hysteresis based multifunctional electric vehicle charger with a single feedback loop controller

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