A Series of New Control Methods for Single-Phase Z-Source Inverters and the Optimized Operation

Xu, Wenzheng; Liu, Ming; Liu, Junwei; Chan, Ka Wing; Cheng, Ka Wai Eric

doi:10.1109/access.2019.2935023

Cited by 15 publications

(11 citation statements)

References 42 publications

(58 reference statements)

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“…Xu proposed five new control methods such as asymmetric a + b method, symmetric a + b method, semi -symmetric a + b method, asymmetric a x b method and symmetric a x b method for single-phase ZSI having optimized closed-loop control scheme with better harmonic elimination performance. Experimental results are obtained from a 1kW un-isolated ZSI prototype have been demonstrated the effectiveness of the control methods which has better performance with reduced harmonics, more flexible voltage gain, and simple algorithm [27].…”

Section: Introductionmentioning

confidence: 94%

Review of impedance source power converter for electrical applications

Saravanan

Venkatachalam

Borelessa

et al. 2021

IJAAS

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<p>Power electronic converters have been actively researched and developed over the past decades. There is a growing need for new solutions and topography to increase the reliability and efficiency of alternatives with lower cost, size and weight. Resistor source converter is one of the most important power electronic converters that can be used for AC-DC, AC-AC, DC-DC and DC-DC converters which can be used for various applications such as photovoltaic systems, wind power systems, electricity. Vehicles and fuel cell applications. This article provides a comprehensive overview of Z-source converters and their implementation with new configurations with advanced features, emerging control strategies and applications.</p>

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Section: Introductionmentioning

confidence: 94%

Review of impedance source power converter for electrical applications

Saravanan

Venkatachalam

Borelessa

et al. 2021

IJAAS

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“…C Z1 =C Z2 =CZ. Otherwise, an asymmetric topology would lead to unbalanced operation as well as difference in voltage and current stress of devices [33]. The output side of the Z-source topology is connected to a classical three-phase full-bridge inverter with six switches.…”

Section: A Basic Principle Of Three-phase Z-source Invertersmentioning

confidence: 99%

“…The output side of the Z-source topology is connected to a classical three-phase full-bridge inverter with six switches. The diode D r is placed in series with the DC voltage source to block any reverse current from the Zsource topology in order to achieve voltage boosting [33].…”

Section: A Basic Principle Of Three-phase Z-source Invertersmentioning

confidence: 99%

“…The voltage-boosting principle of three-phase Z-source inverters is similar to the one of single-phase ones as described in [33], and therefore the detailed analysis and equivalent circuits in each state are not repeated here. In short, the voltage VZ is boosted higher than the input voltage Vdc because of shootthrough states.…”

Section: A Basic Principle Of Three-phase Z-source Invertersmentioning

confidence: 99%

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A Low-Harmonic Control Method of Bidirectional Three-Phase Z-Source Converters for Vehicle-to-Grid Applications

Chan

et al. 2020

IEEE Trans. Transp. Electrific.

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Three-phase Z-source inverters provide a solution of voltage boosting by a single-stage topology. They are also capable of bi-directional operation as rectifiers, thus have great potential for applications in the field of transportation electrification such as Vehicle-to-Grid (V2G) chargers. In this paper, three new modulation schemes for three-phase Z-source converters are proposed and investigated. The best performed one is further developed to a closed-loop PI control method. While the voltage conversion ratio is flexible, the output voltage Total Harmonics Distortion (THD) is below 3% within the voltage ratio range of 0.5 to 2.5. The effectiveness of the proposed method has been fully validated in MATLAB/Simulink simulations and RT-LAB Hardware-In-Loop (HIL) experiments based on the realtime simulator OPAL-RT OP4510. Compared to existing control methods, the proposed one performs better with reduced harmonics, flexible voltage gain, and simpler control algorithm.

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“…Hence, the power circuit is more complicated and the power efficiency is degraded. In addition, the charging power from solar cell array to the battery set should also be processed using two DC-DC power converters for integrating the BESS to perform the power smoothing function for a SPGS An Z-source DC-AC power converter shifts the filter inductor from the AC side of the traditional bridge architecture to the DC side so the power electronic switches for the same arm in the bridge architecture can be turned on at the same time to boost the voltage [19][20][24] [25]. As a result, the DC input voltage can be less than the peak value of grid voltage.…”

Section: Introductionmentioning

confidence: 99%

Solar Power Generation System With Power Smoothing Function

Jou

et al. 2022

IEEE Access

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The output power from a solar power generation system (SPGS) changes significantly because of environmental factors, which affects the stability and reliability of a power distribution system. This study proposes a SPGS with the power smoothing function. The proposed SPGS consists of a solar cell array, a battery set, a dual-input buck-boost DC-AC inverter (DIBBDAI) and a boost power converter (BPC). The DIBBDAI combines the functions of voltage boost, voltage buck and DC-AC power conversion. The BPC acts as a battery charger between the solar cell array and the battery set. For the proposed SPGS, the DC power that is provided by the solar cell array or the battery set is converted into AC power through only one power stage. The solar cell array also charges the battery set through only one power stage. This increases the power conversion efficiency for the solar cell array, the battery set and the utility. The battery set is charged/discharged when the output power of the solar cell array changes drastically, in order to smooth the output power from the SPGS. In addition, the DIBBDAI can suppress the leakage current that is induced by the parasitic capacitance of the solar cell array. The proposed power conversion interface increases power efficiency, smooths power fluctuation and decreases leakage current for a SPGS. A hardware prototype is completed to verify the performance of the proposed SPGS.INDEX TERMS solar power generation, power smoothing, buck-boost DC-AC inverter

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A Series of New Control Methods for Single-Phase Z-Source Inverters and the Optimized Operation

Cited by 15 publications

References 42 publications

Review of impedance source power converter for electrical applications

Review of impedance source power converter for electrical applications

A Low-Harmonic Control Method of Bidirectional Three-Phase Z-Source Converters for Vehicle-to-Grid Applications

Solar Power Generation System With Power Smoothing Function

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