Multilevel Converter for Traction Applications: Small-Scale Prototype Tests Results

Carpita, Mauro; Marchesoni, M.; Pellerin, M.; Moser, David

doi:10.1109/tie.2008.918645

Cited by 88 publications

(28 citation statements)

References 19 publications

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“…Finally, the CHB-MLI is a conventional converter used in variable-speed drives for medium voltage motors such as train traction drives and marine propulsion [36][37]. In this structure, as shown in Fig.…”

Section: A Cascaded H-bridge Multilevel Inverter Applicationsmentioning

confidence: 99%

Quick Diagnosis of Short Circuit Faults in Cascaded H-Bridge Multilevel Inverters using FPGA

Ouni¹,

Zolghadri²,

Rodríguez³

et al. 2017

Journal of Power Electronics

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Fast and accurate fault detection is the primary step and one of the most important tasks in fault tolerant converters. In this paper, a fast and simple method is proposed to detect and diagnosis the faulty cell in a cascaded H-bridge multilevel inverter under a short circuit fault. In this method, the reference voltage is calculated using switching control pulses and DC-Link voltages. The comparison result of the output voltage and the reference voltage is used in conjunction with active cell pulses to detect the faulty cell. To achieve this goal, the cell which is active when the Fault signal turns to "0" is detected as the faulty cell. Furthermore, consideration of generating the active cell pulses is completely described. Since the main advantage of this method is its simplicity, it can be easily implemented in a programmable digital device. Experimental results obtained with an 11-level inverter prototype confirm the effectiveness of the proposed fault detection technique. In addition, they show that the diagnosis method is unaffected by variations of the modulation index.

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Section: A Cascaded H-bridge Multilevel Inverter Applicationsmentioning

confidence: 99%

Quick Diagnosis of Short Circuit Faults in Cascaded H-Bridge Multilevel Inverters using FPGA

Ouni¹,

Zolghadri²,

Rodríguez³

et al. 2017

Journal of Power Electronics

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“…The inverter is composed of three legs, in each one is a series connection of two H-bridge inverters fed by independent dc sources that are not equal (V 1 < V 2 ). Indeed, it may be obtained from batteries, fuel cells, or ultracapacitors in EVs or HEVs [11], [27], [28].…”

Section: Cascaded H-bridge Structure and Operationmentioning

confidence: 99%

Hybrid Cascaded H-Bridge Multilevel-Inverter Induction-Motor-Drive Direct Torque Control for Automotive Applications

Khoucha

Lagoun

Marouani

et al. 2010

IEEE Trans. Ind. Electron.

207

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Abstract-This paper presents a hybrid cascaded H-bridge multilevel motor drive direct torque control (DTC) scheme for electric vehicles (EVs) or hybrid EVs. The control method is based on DTC operating principles. The stator voltage vector reference is computed from the stator flux and torque errors imposed by the flux and torque controllers. This voltage reference is then generated using a hybrid cascaded H-bridge multilevel inverter, where each phase of the inverter can be implemented using a dc source, which would be available from fuel cells, batteries, or ultracapacitors. This inverter provides nearly sinusoidal voltages with very low distortion, even without filtering, using fewer switching devices. In addition, the multilevel inverter can generate a high and fixed switching frequency output voltage with fewer switching losses, since only the small power cells of the inverter operate at a high switching rate. Therefore, a high performance and also efficient torque and flux controllers are obtained, enabling a DTC solution for multilevel-inverter-powered motor drives.

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“…The current centralized power systems entail several disadvantages including low power conversion efficiency, low power density, and poor performance in voltage control arising from the losses on transmission lines as the distance widens between converters and loads. The application of distributed power systems comes in this context with the aim of addressing these issues [1][2][3]. This trend is also accompanied by the growing use of modular multilevel converters (MMCs) in order to satisfy the demand for high-quality electricity.…”

Section: Introductionmentioning

confidence: 99%

Hot-Swappable Modular Converter System Control for Heterogeneous Batteries and ESS

Cha

Choi

et al. 2018

Energies

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This study proposes a modular bidirectional converter system for hot-swappable energy storage systems (ESSs). The proposed modular converter has a four-leg interleaved structure, and therefore it can reduce input current ripples and is suitable for secondary cells. Moreover, if any of the legs fails, hot-swap is available through phase control inside the converter. The modular converter uses an independently controllable battery as an input power source, allowing the charge and discharge control according to each stated of charge (SOC). The output voltage of the converter circumvents the module in the event of a high-voltage output control and a fault (exchange due to battery life, repair of converter) through the cascade-type bypass, thereby enabling continuous operation. The hot-swap operation of the proposed modular ESS converter system and the charge and discharge control algorithm according to battery SOC are verified by experiment.

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Multilevel Converter for Traction Applications: Small-Scale Prototype Tests Results

Cited by 88 publications

References 19 publications

Quick Diagnosis of Short Circuit Faults in Cascaded H-Bridge Multilevel Inverters using FPGA

Quick Diagnosis of Short Circuit Faults in Cascaded H-Bridge Multilevel Inverters using FPGA

Hybrid Cascaded H-Bridge Multilevel-Inverter Induction-Motor-Drive Direct Torque Control for Automotive Applications

Hot-Swappable Modular Converter System Control for Heterogeneous Batteries and ESS

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