High Voltage Gain Quasi-Switched Boost Inverters With Low Input Current Ripple

Nguyen, Minh-Khai; Duong, Truong-Duy; Lim, Young‐Cheol

doi:10.1109/tii.2018.2806933

Cited by 58 publications

(110 citation statements)

References 28 publications

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“…Substituting 4into (15), the inductance values of L1 and L2 in the proposed M2S-qSBI with the AZST-SVM4 method are calculated as…”

Section: V3-vst-v2-v1-vst-v6-vst-v1-v2-vst-v3 Vst-v3-v2-v1-v6-vst-v6-mentioning

confidence: 99%

“…However, when a wider input voltage range is needed for a PV system related to the buck voltage ability or a low voltage boost requirement, the embedded qSBI cannot respond well, as presented in [13]- [14]. In order to overcome this limitation, an active qSBI has been proposed by combining the qZS and qSB topologies [15]- [16]. However, many components are required in these Z-networks, which leads to reduce efficiency and increase cost.…”

Section: Introductionmentioning

confidence: 99%

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Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter With Common-Mode Voltage Reduction

et al. 2020

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In a single-stage buck-boost quasi-switched boost inverter (qSBI), the shoot-through state insertion causes high amplitude common-mode voltage. Consequently, the qSBI becomes less attractive in transformerless photovoltaic (PV) systems. In this paper, a novel space vector pulse-width modulation for a modified qSBI is introduced to reduce the magnitude of common-mode voltage and push the modulation index up to 1. By properly choosing the shoot-through interval time, shoot-through states are considered to be inserted for boosting voltage and also reducing the THD value of the output voltage. The mathematical analysis and operating principles of the converter are discussed and verified through PSIM simulations. Finally, an experimental prototype is validated based on a TMS320F28335 DSP microcontroller and a DE0-Nano FPGA digital control platform. INDEX TERMS Z-source inverter, quasi-switched boost inverter, single-stage inverter, common-mode voltage, transformerless PV system, space vector pulse-width modulation.

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“…Substituting 4into (15), the inductance values of L1 and L2 in the proposed M2S-qSBI with the AZST-SVM4 method are calculated as…”

Section: V3-vst-v2-v1-vst-v6-vst-v1-v2-vst-v3 Vst-v3-v2-v1-v6-vst-v6-mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter With Common-Mode Voltage Reduction

et al. 2020

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“…To decrease the volume and loss of the power inverter, active impedance source inverters have been recently proposed in [11][12][13][14][15][16][17][18][19][20]. The switched boost inverter (SBI) [11] uses fewer passive elements and more semiconductors to produce a smaller voltage gain than ZSIs.…”

Section: Introductionmentioning

confidence: 99%

“…In [17], a high-voltage gain switched-ZSI (SZSI) was introduced by using one more inductor, one more capacitor, and two more diodes when compared with the qSBI. To reduce the voltage stress on the capacitor, diode, and switch of the impedance-source network, a high voltage gain qSBI was proposed in [18]. An active switched-capacitor qZSI (ASC-qZSI) was proposed in [19], where only one inductor and one capacitor were added to the qSBI to obtain the same voltage gain as the SZSI.…”

Section: Introductionmentioning

confidence: 99%

“…A control-based approach to suppress the low-frequency harmonic component in the input inductor current of the single-phase qSBI has been presented in [22]. Even though the active impedance source inverters in [11][12][13][14][15][16][17][18][19][20][21][22] have good performance, where there is a reduced volume and loss with a high voltage gain, the voltage stress on the additional switch is very high because it equals the dc-bus voltage. To decrease the voltage stress on devices, switched-capacitor qSBIs were investigated in [23].…”

Section: Introductionmentioning

confidence: 99%

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Voltage Multiplier Cell-Based Quasi-Switched Boost Inverter with Low Input Current Ripple

Nguyen

Choi

2019

Electronics

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A novel single-phase single-stage voltage multiplier cell-based quasi-switched boost inverter (VMC-qSBI) is proposed in this paper. By adding the voltage multiplier cell to the qSBI, the proposed VMC-qSBI has the following merits; a decreased voltage stress on an additional switch, a high voltage gain, a continuous input current, shoot through immunity, and a high modulation index. A new pulse-width modulation (PWM) control strategy is presented for the proposed inverter to reduce the input current ripple. To improve the voltage gain of the proposed inverter, an extension is addressed by adding the VMCs. The operating principle, steady-state analysis, and impedance parameter design guideline of the proposed inverter are presented. A comparison between the proposed inverter and other impedance source-based high-voltage gain inverters is shown. Simulation and experimental results are provided to confirm the theoretical analysis.

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Design and control of an improved Z‐H8 inverter for photovoltaic applications

Ahmadzadeh

Babaei

Sabahi

et al. 2022

Circuit Theory & Apps

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This paper proposes a new modified buck–boost converter entitled the basic Z‐H8 topology. The modified configuration is composed by adding two dc decoupling and non‐ideal compensation blocks across the dc‐input side of the conventional Z‐H buck converter. These blocks create some benefits such as buck–boost ability and lower stresses and ripples for passive and active elements by up to 50% compared to the traditional Z‐H structure. Moreover, the proposed topology can be used as a dc/dc, dc/ac, or ac/dc converter. Hence, various control techniques based on unipolar PWM and SPWM are proposed for the basic Z‐H8 configuration to act as an inverter. Other valuable advantages are providing galvanic isolation and reducing leakage current by two blocks, which can be extremely useful for photovoltaic (PV) applications. Thus, a grid‐connected single‐stage PV system with a proper model predictive control algorithm is proposed. Despite a continuous voltage on the Z‐H8 inverter output, other benefits of the proposed PV system are tracking the maximum power point, adjusting the injected powers to the grid, and increasing security and reliability. The operating principle of the proposed topologies and control methods are explained in detail with the relevant equations and are confirmed by the simulation and experimental results.

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High Voltage Gain Quasi-Switched Boost Inverters With Low Input Current Ripple

Cited by 58 publications

References 28 publications

Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter With Common-Mode Voltage Reduction

Modulation Techniques for a Modified Three-Phase Quasi-Switched Boost Inverter With Common-Mode Voltage Reduction

Voltage Multiplier Cell-Based Quasi-Switched Boost Inverter with Low Input Current Ripple

Design and control of an improved Z‐H8 inverter for photovoltaic applications

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