Reduction of Input Current Harmonic Distortions and Balancing of Output Voltages of the Vienna Rectifier Under Supply Voltage Disturbances

Adhikari, Jeevan; Prasanna,; Panda, Sanjib Kumar

doi:10.1109/tpel.2016.2611059

Cited by 68 publications

(22 citation statements)

References 27 publications

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“…In sector 4, u a and u b have the same polarity. From (13), it is easy to know i o <0, which expresses that the neutral-point current is less than zero in sector 4 with capacitor C 1 charging and C 2 discharging. The expressions of neutral-point current i o in the other five sectors can be calculated in the same way.…”

Section: Neutral-point Current Mathematical Model: According Tomentioning

confidence: 99%

“…The neutral‐point voltage oscillation is an inherent problem in three‐level topology including hybrid VIENNA rectifier, which can lead to unbalanced voltage of the capacitor and cause the switch over‐voltage damage, it also affects the input line voltage waveform as well as making the total harmonic distortion (THD) of input current become large with the same filter parameters [12, 13]. Recently, some suppression methods of neutral‐point voltage oscillation have been proposed.…”

Section: Introductionmentioning

confidence: 99%

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Two methods for controlling three‐time fundamental frequency neutral‐point voltage oscillation in a hybrid VIENNA rectifier

Song

Dai

Xie

et al. 2019

IET Power Electronics

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This study presents two methods of controlling neutral-point voltage oscillation in a hybrid VIENNA rectifier, which is composed of the parallel association of a three-phase single-switch Boost rectifier with a VIENNA-type rectifier. The neutralpoint oscillation reason has been analysed with a mathematical model. Meanwhile, the two neutral-point control methods of a simplified method based on a zero-sequence component injection and a dual-carrier pulse-width modulation (PWM) method are proposed to control the voltage deviation of the split DC-link and three-time fundamental frequency neutral-point voltage fluctuation with a decrease from ±1.6 to ±1 V, respectively. Moreover, the significant oscillation in the neutral-point voltage caused by unbalanced loads or asymmetric capacitor parameters can also be effectively suppressed by using the dual-carrier PWM method. Furthermore, the performance comparison between these two methods is provided. The experimental results show that the system after being introduced the proposed two methods still exhibits a low-order input current harmonic such as second, third, and fourth harmonics as well as the input current total harmonic distortion is lower than the standard 5%.

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Section: Neutral-point Current Mathematical Model: According Tomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two methods for controlling three‐time fundamental frequency neutral‐point voltage oscillation in a hybrid VIENNA rectifier

Song

Dai

Xie

et al. 2019

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…u sx ( x = a , b , c ) and i sx are three‐phase input voltages and three‐phase input currents, respectively. The fully controlled power switches are used to ensure the sinusoidal input currents and the desired output voltages [27].…”

Section: Modelling and Operation Principle Of Vienna Topologymentioning

confidence: 99%

Power factor adjustment and input current distortion mitigation for three‐phase unidirectional rectifier

Cheng

Kong

Wang

et al. 2019

IET Power Electronics

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In order to improve the power quality, many researchers in the worldwide are committed to investigating the feasibility of integrating reactive power compensation (RPC) and harmonic current compensation (HCC) functionalities for unidirectional rectifier, while the capability of RPC for unidirectional rectifier is very limited. Hence, with the aim of enlarging the capability of RPC for unidirectional rectifier, this article introduces a versatile control strategy for three-phase star-connected unidirectional rectifier. The operating principle and the reasons that limit the capability of RPC for unidirectional rectifier are analysed in detail. On this basis, a novel criterion for judging input current distortion zone is proposed. Furthermore, the additional focus of this article is to quantify the constraint relationship between the degree of input current distortion compensation and input power factor regulating range. Simulations and experimental results are conducted to verify the feasibility and effectiveness of the proposed control strategy, as well as the correctness of the theoretical analysis on the proposed constraints of the input power factor regulation.

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“…Two different circuits can be considered for construction of the AC to DC conversion system: a bidirectional inverter, which is capable of AC-DC and DC-AC conversion, and a unidirectional Vienna rectifier, which is only capable of AC-DC conversion. As a fast charging characteristic and high efficiency are required of EV chargers, the Vienna rectifier, which has a simple structure and high efficiency, is typically used as the pulse-width modulation (PWM) converter in this device, to control the grid side current [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Improving Line Current Distortion in Single-Phase Vienna Rectifiers Using Model-Based Predictive Control

2018

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Conventional single-phase Vienna rectifiers employ proportional-integral (PI) controllers which are appropriate for controlling DC components, to regulate their line currents. However, in the regions close to the line current's zero-crossing point, the dynamics of PI controllers are too slow to respond to the reference current, which has an AC component. Hence, the power factor (PF) of the device is degenerated, and total harmonic distortion (THD) increases. A controller with a fast dynamic response is thus required to solve this problem. In this paper, we investigate the use of a model-based predictive controller (MPC), which has a faster dynamic response than a PI controller, to improve the line current quality of a single-phase Vienna rectifier. With this method, the average current in both the continuous current mode (CCM) and the discontinuous current mode (DCM) of operation are controlled using a mode detection method. Moreover, we calculate the optimized duty cycle for the single-phase Vienna rectifier, by predicting the next current state. We verify the operation of the proposed algorithm using a PSIM simulation, and a practical experiment conducted with a 1-kW-rated single-phase Vienna rectifier prototype. With the proposed method, the quality of the line current near the zero-crossing point is improved, and the PF is controlled to unity.

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Reduction of Input Current Harmonic Distortions and Balancing of Output Voltages of the Vienna Rectifier Under Supply Voltage Disturbances

Cited by 68 publications

References 27 publications

Two methods for controlling three‐time fundamental frequency neutral‐point voltage oscillation in a hybrid VIENNA rectifier

Two methods for controlling three‐time fundamental frequency neutral‐point voltage oscillation in a hybrid VIENNA rectifier

Power factor adjustment and input current distortion mitigation for three‐phase unidirectional rectifier

Improving Line Current Distortion in Single-Phase Vienna Rectifiers Using Model-Based Predictive Control

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