A hybrid cascaded multilevel inverter for interfacing with renewable energy resources

Khomfoi, Surin; Praisuwanna, Nattapat

doi:10.1109/ipec.2010.5543508

Cited by 16 publications

(5 citation statements)

References 6 publications

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“…The fundamental output voltages can be controlled by changing the modulation index (m a ) of the reference signal. In addition, the fundamental output frequency can be adjusted by changing the frequency of the reference signal as reported in [13]. It is possible that a diagnostic method, namely the normalized dc current method, can be applied for detecting open circuit switch faults as report by [17].…”

Section: Fault Diagnostic Methodologymentioning

confidence: 99%

A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications

Khomfoi¹

2016

Journal of Power Electronics

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A cascaded hybrid multilevel inverter including a reconfiguration technique for low voltage dc distribution applications is proposed in this paper. A PWM generation fault detection and reconfiguration paradigm after an inverter cell fault are developed by using only a single-chip controller. The proposed PWM technique is also modified to reduce switching losses. In addition, the proposed topology can reduce the number of required power switches compared to the conventional cascaded multilevel inverter. The proposed technique is validated by using a 3-kVA prototype. The switching losses of the proposed multilevel inverter are also investigated. The experimental results show that the proposed hybrid inverter can improve system efficiency, reliability and cost effectiveness. The efficiency of proposed system is 97.45% under the tested conditions. The proposed hybrid inverter topology is a promising method for low voltage dc distribution and can be applied for the multiple loads which are required in a data center or telecommunication building.

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Section: Fault Diagnostic Methodologymentioning

confidence: 99%

A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications

Khomfoi¹

2016

Journal of Power Electronics

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“…It consists a three-phase bridge with the main dc link fed by a single dc source (battery), and each phase series-connected respectively to an H-bridge fed with a floating dc source (UC) where the voltage is allowed to vary depending on energy stored. This type of modified cascade multilevel inverter is selected since the structure is known to deliver a high number of output voltage levels for relatively low number of switches, and that the dc sources are isolated [16][17]. The output phase voltage (V an , V bn , V cn ) of the inverter in reference to the centre point "n" of the main voltage source can be described as a function of battery voltage (…”

Section: Topology Of Inverter Motor Drivementioning

confidence: 99%

Control Strategy for a Modified Cascade Multilevel Inverter With Dual DC Source for Enhanced Drivetrain Operation

Bendyk

Luk

Alkhafaji

2017

IEEE Trans. on Ind. Applicat.

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This paper presents a new control strategy for a modified cascade multilevel inverter used in drivetrain operations. The proposed inverter is a three-phase bridge with its dc link fed by a dc source (battery), and each phase seriesconnected respectively to an H-bridge fed with a floating dc source (ultracapacitor). To exploit the potentials of the inverter for enhanced drivetrain performance, a sophisticated yet efficient modulation method is proposed to optimise energy transfer between the dc sources and with the load (induction motor) during typical operations, and to minimise switching losses and harmonics distortion. Detailed analysis of the proposed control method is presented, which is supported by experimental verifications.

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“…Main inverter consists of two switching devices cascaded to conventional H-bridge inverter which consists of four switching devices. For five level HMI total six devices are required in each phase of a three phase connection which reduces number of devices by six as compared to three phase five level CHMI [7][8]. For n level CHMI (n-1)/2 number of independent sources are required.…”

Section: Hybrid Multilevel Invertermentioning

confidence: 99%

Comparative Study of Hybrid and Cascaded H-Bridge Multilevel Inverters

Krishna¹,

Vadhera²

2013

IJRET

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In this paper comparative study of proposed hybrid multilevel inverter (HMI) operating in modified pulse width modulation (PWM) mode with cascaded H-bridge multilevel inverter (CHMI) is done. Two types of HMIs are proposed with same configuration. To control the two HMIs, modified PWM techniques are derived from sinusoidal pulse width modulation (SPWM) to reduce the switching losses in the inverter. Matlab/Simulink models are used to study the output of HMI and CHMI.

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A hybrid cascaded multilevel inverter for interfacing with renewable energy resources

Cited by 16 publications

References 6 publications

A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications

A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications

Control Strategy for a Modified Cascade Multilevel Inverter With Dual DC Source for Enhanced Drivetrain Operation

Comparative Study of Hybrid and Cascaded H-Bridge Multilevel Inverters

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