A New Step-up Voltage Balancing Circuit for Neutral-Point-Clamped Multilevel Inverter

Taghvaie, Amir; Haque, Enamul; Saha, Sajeeb; Mahmud, M. A.

doi:10.1109/pedes.2018.8707464

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…In modulation technique Carrier Based (CB) Pulse Width Modulation (PWM) is used attain voltage output with seven levels using frequency switching [19][20][21][22][23][24]. This method is very easy and simple to enlarge less estimated efforts as compared to Space vector Pulse Width Modulation (SVPWM) (see figure 3) [25][26][27][28][29].…”

Section: Design and Control Of Grid Side Invertermentioning

confidence: 99%

A New Step-Up Switched-Capacitor Voltage Balancing Converter

Venkateswarlu¹,

Yasaswini²,

Begum³

et al. 2022

IJIREM

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The new step-up capacitor grid is connected to the solar photovoltaic (PV) having a voltage balancing converters. It’s suitable for Neutral-Point-clamped (NPC) Multilevel Inverter (MI). To balance the capacitor DC link voltage effectively we've got to use switched capacitors. By using balancing converter, we will enlarge the higher levels and also by boosting input voltage we are able to see the upper levels of voltage without using magnetic components. This attribute allows operating the input and output voltage by self-balancing. The balancing converter for NPC multilevel inverter-based solar PV system is operated by using vector scheme control. PV system incorporates a Maximum power point Tracking (MPPT) and it's executed in Matlab power system. The output of the simulation result topology can successfully balance the DC voltage and excess power from grid. The injected power within the grid can vary the solar light with active performances.

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Section: Design and Control Of Grid Side Invertermentioning

confidence: 99%

A New Step-Up Switched-Capacitor Voltage Balancing Converter

Venkateswarlu¹,

Yasaswini²,

Begum³

et al. 2022

IJIREM

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“…Fig. 2 shows the proposed step-up balancing converter [24]. The proposed converter comprises of five power switches and two diodes which are designed in such a way that input DC source can be connected in parallel with each capacitor during charging states.…”

Section: Proposed Step-up Balancing Convertermentioning

confidence: 99%

“…Figures 4 (a-d) show the potential switching states for the proposed converter which is connected to a seven-level NPC-MLI. It is clear that a three-phase NPC-MLI has been considered to investigate the potential switching states (three levels for the positive states and one level for zero state) [24]. From Fig.…”

Section: Proposed Step-up Balancing Convertermentioning

confidence: 99%

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A New Step-Up Switched-Capacitor Voltage Balancing Converter for NPC Multilevel Inverter-Based Solar PV System

et al. 2020

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This paper proposed a grid connected solar Photovoltaic (PV) Systems with a new voltage balancing converter suitable for Neutral-Point-Clamped (NPC) Multilevel Inverter (MLI). The switchedcapacitors used in the proposed converter is able to balance the DC link capacitor voltage effectively by using proper switching states. The proposed balancing converter can be extended to any higher levels and it can boost the DC input voltage to a higher voltage levels without using any magnetic components. This feature allows the converter to operate with the boosting capability of the input voltage to the desired output voltage while ensuring the self-balancing. In this paper the proposed converter is used for a grid connected solar PV system with NPC multilevel inverter, which is controlled using vector control scheme. The proposed grid connected solar PV system with associated controllers and maximum power point tracking (MPPT) is implemented in Matlab/SimPowerSystem and experimentally validated using dSPACE system and designed converters. The simulation and experimental results show that the proposed topology can effectively balance the DC link voltage, extract maximum power from PV module and inject power to the grid under varying solar irradiances with very good steady state and dynamic performances.INDEX TERMS Solar photovoltaics, NPC multilevel inverter, balancing circuit, dc-link voltage balancing, grid connected PV system.

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