A Dual-Input–Dual-Output Z-Source Inverter

Dehghan, Seyed Mohammad; Mohamadian, Mustafa; Yazdian, Ali; Ashrafzadeh, F.

doi:10.1109/tpel.2009.2028345

Cited by 87 publications

(30 citation statements)

References 11 publications

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“…Inverter that acts as a converter directly converting DC voltage to AC voltage can supply power to three-phase AC loads, but it can only drive a set of independent three-phase loads. With the development of society, there are many applications such as papermaking, textile, urban rail transit and steelmaking that require two or more AC loads independent control, so it is extremely important to study the dual AC topology [1]- [4]. Therefore, some scholars have proposed a nine-switch inverter (NSI) topology, which can realize two groups of three-phase AC outputs with only nine switches, but it can only supply power to two groups of balanced three-phase loads [5]- [10].…”

Section: Introductionmentioning

confidence: 99%

Control Strategy for Four-Leg Nine-Switch Inverter Under Unbalanced Loads

Wang

Liu

et al. 2020

IEEE Access

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On account of that nine-switch inverter (NSI) cannot supply symmetrical voltages to unbalanced loads, based on the NSI, N-phase leg is added to the neutral points of the loads, which forms a four-leg nine-switch inverter (FLNSI). The neutral point voltages under unbalanced loads are analysed and derived by space vector pulse width modulation (SVPWM) strategy for calculating the duty ratio of N-phase leg. While the calculations of other three-phase legs duty ratios of SVPWM method remain unchanged. Although SVPWM method can realize FLNSI outputs symmetrical voltages for unbalanced loads, it needs trigonometric function calculation and sector judgements. The carrier-based pulse width modulation (CBPWM) strategy is proposed for the sake of simplifying SVPWM. All of the duty ratios are used to calculate modulation waves of FLNSI. Compare the modulation waves with a carrier, which can control the neutral point voltages as corresponding zero-sequence voltages. Therefore, two groups of three-phase symmetrical sinusoidal voltages are obtained under both balanced loads and unbalanced loads. Finally, the experimental results are given to show the advantages of FLNSI topology and to validate of the effectiveness of the applied modulation strategy. INDEX TERMS Carrier-based pulse width modulation (CBPWM), four-leg nine-switch inverter (FLNSI), space vector pulse width modulation (SVPWM), unbalanced loads.

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Section: Introductionmentioning

confidence: 99%

Control Strategy for Four-Leg Nine-Switch Inverter Under Unbalanced Loads

Wang

Liu

et al. 2020

IEEE Access

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“…In order to develop the concept of hybrid energy systems and required power electronic interface, many researches are conducted [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Some of them have introduced on new structure and the others studied switching methods.…”

Section: Introductionmentioning

confidence: 99%

Dual-source inverter for hybrid PV–FC application

2019

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Multi input-multi output Power electronic interface for hybrid energy resources has gathered much of interest. In this paper, a new configuration for cascade connection of two Z-Impedance networks is presented which is able to extract power from two separate low voltage energy sources such as photovoltaic panels and fuel cell stacks. The required load power can be shared between two sources which may have different low values. The power sharing is controlled by adjusting the shoot through duration and time shifting. The proposed converter includes the features of conventional Z-source converter such as voltage boost and shoot through immunity of the inverter. Steady state operation principles, switching methods and the main relations for power flow from two inputs to the output are derived. A prototype of the converter is built and tested for different operation modes. The results are compared with simulations and theoretical analysis which verify well performance of the system.

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“…Applying the nine-switch converters as dual motor driver [1], ac/ac converter [2], power conditioner [3] and inteface of grid and wind turbine [4,5] have been discussed. And, many modified versions, such as as the z-source version [6,7], dual input z-source version [8] and matrix version [9,10] have also been proposed. All these studies show the potential of the nineswitch converter.…”

Section: Introductionmentioning

confidence: 99%

Sliding Mode Pulsewidth Modulation (SMPWM) for nine-switch converter

Chen

Gang

Kang

2013

2013 IEEE International Symposium on Industrial Electronics

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Nine-switch converter, which can provide two sets of three-phase outputs with independent amplitudes, phases and frequencies, has been proposed to replace two independent three-phase converters for cost-and size-reduced purposes. This paper proposes a hysteresis-modulation (HM) sliding-mode (SM) pulsewidth modulation (PWM) for the nine-switch converter. With the proposed HM-SMPWM, the phase currents of the two sets of outputs can track to their current references directly. To do this, decoupled sliding surfaces for the two sets of outputs are structured; based on the sliding surfaces, the proposed SMPWM are detailed explained; the operational range is also discussed; finally the experiments are carried out to confirm the effectiveness of analysis.

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A Dual-Input–Dual-Output Z-Source Inverter

Cited by 87 publications

References 11 publications

Control Strategy for Four-Leg Nine-Switch Inverter Under Unbalanced Loads

Control Strategy for Four-Leg Nine-Switch Inverter Under Unbalanced Loads

Dual-source inverter for hybrid PV–FC application

Sliding Mode Pulsewidth Modulation (SMPWM) for nine-switch converter

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