A Dynamic Boost Converter Input Stage for a Double 120&amp;#x000B0; Flattop Modulation Based Three-Phase Inverter

Shen, Jie; Rigbers, K.; Dick, Christian; Doncker, Rik W. De

doi:10.1109/08ias.2008.311

Cited by 14 publications

(3 citation statements)

References 7 publications

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“…In [4] a dual mode time-sharing inverter was introduced, trying to utilize the good performance of the low-voltage device to achieve higher switching frequency. In [5] and [6] dual-mode time-sharing control methods for single-and three-phase in- verters, respectively, was proposed to maximize the modulation index and reduce the output power filter size. However, it makes the topologies or controls much more complex, leading to loss of reliability.…”

Section: Introductionmentioning

confidence: 99%

An LLCL Power Filter for Single-Phase Grid-Tied Inverter

He²,

Blaabjerg

2012

IEEE Trans. Power Electron.

350

204

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This paper presents a new topology of higher order power filter for grid-tied voltage-source inverters, named the LLCL filter, which inserts a small inductor in the branch loop of the capacitor in the traditional LCL filter to compose a series resonant circuit at the switching frequency. Particularly, it can attenuate the switching-frequency current ripple components much better than an LCL filter, leading to a decrease in the total inductance and volume. Furthermore, by decreasing the inductance of a grid-side inductor, it raises the characteristic resonance frequency, which is beneficial to the inverter system control. The parameter design criteria of the proposed LLCL filter is also introduced. The comparative analysis and discussions regarding the traditional LCL filter and the proposed LLCL filter have been presented and evaluated through experiment on a 1.8-kW-single-phase grid-tied inverter prototype.

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Section: Introductionmentioning

confidence: 99%

An LLCL Power Filter for Single-Phase Grid-Tied Inverter

He²,

Blaabjerg

2012

IEEE Trans. Power Electron.

350

204

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“…Hence, 240CPWM can be conveniently used in any three-phase twostage PV systems without increasing the component count or changing the topology. The application of 240CPWM has been discussed in grid-connected PV converter in [17], [18], [19], [20], [21], [22], [23], [27] and motor drives in [24], [25]. Details of 240CPWM concept, generation of switching signals and implementation of 240CPWM using space vector approach have been discussed in detail in [24].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, they change the operating point of MPPT, reducing the efficiency of grid-connected PV converter. The low frequency harmonics in input DC current in PV application with 240CPWM have been shown in [18], [20], [21]. However, methods to mitigate the low frequency harmonics in input DC current and AC line currents with 240CPWM have never been discussed before.…”

Section: Introductionmentioning

confidence: 99%

Low Frequency Ripple Reduction in Input DC Current and AC Line Currents With 240$^{\circ }$ Clamped Space Vector PWM in Grid-Connected Photovoltaic Converters

Qamar,

Korada

et al. 2023

IEEE Open J. Power Electron.

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240 • -Clamped Space Vector PWM (240CPWM) is a lowest switching loss PWM method in cascaded architecture of DC-DC stage followed by DC-AC stage that reduces the switching loss by 85% in the DC-AC stage at unity power factor as compared to conventional space vector PWM (CSVPWM). 240CPWM requires unique six-pulse dynamically varying DC link voltage instead of constant DC link voltage which introduces low frequency harmonics predominantly around six times the fundamental frequency (6 f 1 ). These low frequency harmonics distort the input DC current and AC line currents. Moreover, they change the operating point of maximum power point tracking (MPPT), reducing the efficiency of grid-connected Photovoltaic (PV) converter. In this article, three topologies are proposed to reduce the low frequency ripple in input DC current and AC line currents in three-phase grid-connected PV systems with 240CPWM. A three-phase 1.5 kW Silicon Carbide based hardware prototype in grid-connected mode is developed to validate the performance of the proposed topologies. Experimental results show that the maximum reduction of 68.8% in (6 f 1 ) harmonic component in DC input current is achieved in active filter based Topology II without any significant detrimental effect on THD in AC line currents and inverter efficiency as compared to standard topology.INDEX TERMS Photovoltaic (PV), grid-connected converter, low frequency harmonics, DC input current, 240 • -Clamped Space Vector PWM (240CPWM), dynamic DC link, Total Harmonic Distortion (THD).

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AnLLCLPower Filter for Single‐Phase Grid‐Connected Inverter

2022

Control and Filter Design of Single‐Phase Grid‐Connected Converters

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A Dynamic Boost Converter Input Stage for a Double 120° Flattop Modulation Based Three-Phase Inverter

Cited by 14 publications

References 7 publications

An LLCL Power Filter for Single-Phase Grid-Tied Inverter

An LLCL Power Filter for Single-Phase Grid-Tied Inverter

Low Frequency Ripple Reduction in Input DC Current and AC Line Currents With 240$^{\circ }$ Clamped Space Vector PWM in Grid-Connected Photovoltaic Converters

AnLLCLPower Filter for Single‐Phase Grid‐Connected Inverter

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