A Single-Phase PV Quasi-Z-Source Inverter With Reduced Capacitance Using Modified Modulation and Double-Frequency Ripple Suppression Control

Zhou, Yan; Li, Hongbo; Li, Hui

doi:10.1109/tpel.2015.2432070

Cited by 127 publications

(53 citation statements)

References 15 publications

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“…Four basic CB-PWM control techniques, namely simple boost control [1], maximum boost control [2], maximum constant boost control [3], and modified SV-PWM methods [6,7] for three-phase ZSIs were compared in [8]. For single-phase ZSIs, most PWM controls use the simple boost control method [9][10][11][12][13][14][15][16]. In the simple boost control method, a constant voltage is compared to a high frequency triangle waveform to generate a fixed shoot-through control signal.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, some PWM strategies to reduce the ripples in the capacitor voltage and inductor current of ZSIs have been addressed in [11][12][13]18,19]. In [13], a low frequency (2ω) ripple is added to the constant shoot-through control waveform to suppress the double-frequency ripple in the capacitor in the single-phase ZSI topology.…”

Section: Introductionmentioning

confidence: 99%

“…In [13], a low frequency (2ω) ripple is added to the constant shoot-through control waveform to suppress the double-frequency ripple in the capacitor in the single-phase ZSI topology. In order to minimize the inductor current ripple in the three-phase ZSI topology, a PWM scheme in which the shoot-through time intervals of the three phase legs are calculated and rearranged according to the active state and zero state time intervals has been proposed in [19].…”

Section: Introductionmentioning

confidence: 99%

“…Instead of using PWM control strategies to reduce the low-frequency ripple, an active filter integrated single-phase qZSI topology has been proposed in [14] to transfer the low-frequency ripple directly from the AC load to the active filter AC capacitor. Figure 1 shows the single-phase qZSI [11][12][13]. Compared to ZSI, qZSI improves the input current and reduces the capacitor voltage rating.…”

Section: Introductionmentioning

confidence: 99%

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Maximum Boost Control Method for Single-Phase Quasi-Switched-Boost and Quasi-Z-Source Inverters

Nguyen

Choi

2017

Energies

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Abstract:The maximum boost control method for a single-phase switched-boost inverter (SBI) and single-phase Z-source inverter (ZSI) is proposed in this paper. In the proposed method, the low frequency voltage is added to the constant voltage for generating the variable shoot-through time intervals. For improving the AC output quality of the inverter, an active power switch is used to replace one of the diodes in the single-phase SBI. The operating principles and circuit analysis using the proposed maximum boost control method for single-phase inverters are presented. Laboratory prototypes are built to verify the operation of the proposed pulse-width modulation (PWM) control method for both single-phase quasi-ZSI and single-phase quasi-SBI.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Maximum Boost Control Method for Single-Phase Quasi-Switched-Boost and Quasi-Z-Source Inverters

Nguyen

Choi

2017

Energies

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“…To overcome these problems, a new inverter topology known as impedance source inverter (ZSI) has attracted a lot of attention recently [6][7][8][9]. Some advantages of ZSI compared to the previous structures are the ability to increase or decrease the voltage over a wide range by setting the shoot-through (ST) time interval, the possibility of shoot-through without damaging of the switches, a second order filtering by impedance network and power quality improvement, the high switching frequency of the impedance network which is 6 times more than inverter frequency leading to size reduction of the elements, less influence of EMI noise, and etc [10,11]. Figure 1 shows the schematic of a three-phase ZSI active filter connected to the grid.…”

Section: Introductionmentioning

confidence: 99%

A Multi–Objective Optimization for Performance Improvement of the Z–Source Active Power Filter

Hosseini

Beromi

2016

Journal of Electrical Engineering

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The high power dissipation is one of the most important problems of the z-source inverter (ZSI). By using an appropriate optimization scheme, the losses can be significantly reduced without any negative impact on the other characteristics of the inverter. In this paper, a multi-objective optimization is implemented in order to reduce the ZSI total losses as well as to improve the z-source active power filter (APF) performance. The optimization is focused on the four important objectives including power losses of the Z-source APF, the initial cost of the system components, the voltage and current ripples, and the boost factor of the z-source network. For these purposes, the multi-objective genetic algorithm (MOGA) is employed. The numerical and simulation results are presented to evaluate the optimization performance. The results show that a good balance can be achieved between the switching power losses, the voltage-current ripple levels, the component costs and the boost factor using the optimized parameters.

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The switched capacitor differential boost inverter applied to grid connection

Andrade

Silva

Coelho

et al. 2021

Int Trans Electr Energ Syst

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Summary The switched capacitor differential boost inverter (SCDBI) is a single‐stage single‐phase step‐up bidirectional inverter, in which the voltage gain lifts as the number of switched‐capacitor cells increases. When this inverter is applied to grid‐connection as herein proposed, its capacitive output‐voltage feature enables a grid current with low ripple, even when a simple L filter is employed. In addition, the SCDBI is free of high frequency common mode voltage, which mitigate the common mode current circulation between the input and output sources. These attributes favor the employment of this inverter in grid‐connected systems. Although these are positive aspects, the SCBDI also presents some challenges related to its nonlinear voltage gain and high‐order dynamic models. In this paper, a reduced order dynamic model is derived to simplify the SCDBI modeling and a static gain linearization technique is proposed in order to simplify the control strategy, therefore enabling the use of classical control methods. Experimental results achieved from a 250 W prototype, dc input voltage of 60 V, and electrical grid of 220 V rms, corroborated the inverter operation, in which a peak efficiency of 90% and a grid‐current total harmonic distortion less than 5% were reached.

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A Single-Phase PV Quasi-Z-Source Inverter With Reduced Capacitance Using Modified Modulation and Double-Frequency Ripple Suppression Control

Cited by 127 publications

References 15 publications

Maximum Boost Control Method for Single-Phase Quasi-Switched-Boost and Quasi-Z-Source Inverters

Maximum Boost Control Method for Single-Phase Quasi-Switched-Boost and Quasi-Z-Source Inverters

A Multi–Objective Optimization for Performance Improvement of the Z–Source Active Power Filter

The switched capacitor differential boost inverter applied to grid connection

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