Analysis of Double-Bridge Inverters for Drive Systems With Open-End Winding Motors

Antivachis, Michael; Wu, Dan; Bortis, Dominik; Kolar, Johann W.

doi:10.1109/jestpe.2020.3017085

Cited by 8 publications

(2 citation statements)

References 41 publications

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“…The DB-VSI of Figure 4 employs the unfolder modulation (Huber et al, 2008;Marxgut et al, 2014;Antivachis et al, 2020b), as shown in Figure 5. There, only one out of the two VSIs is continuously operated with the switching frequency f s , while the second VSI is operated with the fundamental motor frequency f o .…”

Section: Modulationmentioning

confidence: 99%

Novel High-Speed Turbo Compressor With Integrated Inverter for Fuel Cell Air Supply

Antivachis

Dietz²,

Zwyssig³

et al. 2021

Front. Mech. Eng.

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Fuel cell technology is continuously gaining ground in E-mobility applications. Fuel cells require a constant supply of pressurized air, for which high-speed turbo compressors with air bearings are an optimal choice to reduce size, guarantee oil-free operation required for the lifetime of the fuel cell, and increase efficiency. However, the inverter driving the electric motor of the turbo compressor does not scale down with increasing speed; therefore, other technology advances are required to achieve an overall compressor system with low weight. New power electronic topologies (double-bridge voltage sources inverter), cutting edge power semiconductor technology (gallium nitride), and multiobjective optimization techniques allow reducing the inverter size, increasing inverter efficiency, and improving the output current quality and in return lowering the losses in the electric motor. This enables the electrical, mechanical, and thermal integration of the inverter into the compressor housing of very high-speed and compact turbo compressors, thereby reducing the size and weight of the overall compressor system by a factor of two. Furthermore, a turbo compressor with an integrated inverter reduces complexity and cost for operators with savings in casing, cables, coolant piping, and connectors and reduces EMI noise by shielding the high-frequency motor currents with one housing. Beside its main application for fuel cell air supply, the advantages gained by an integrated inverter can also be used in other boosting and air handling applications such as advanced air and exhaust handling in combustion engines. The proposed integration concept is verified with a 280,000 rpm, 1 kW turbo compressor, targeted for the Balance of Plant (BoP) of a 5–15 kW fuel cell. The experimental results show that the temperature limits on the power electronics parts can be kept below the limit of 90 °C up to a coolant temperature of 55 °C, and beside the advantage of lower cabling effort, the efficiency of the compressor system (turbo compressor and integrated inverter) is increased by 5.5% compared to a turbo compressor without an integrated inverter.

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Section: Modulationmentioning

confidence: 99%

Novel High-Speed Turbo Compressor With Integrated Inverter for Fuel Cell Air Supply

Antivachis

Dietz²,

Zwyssig³

et al. 2021

Front. Mech. Eng.

Self Cite

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“…Therefore, a modulation method is considered in which only one inverter of the dual inverter is 6-step operated and another inverter is PWM operated. The switching losses due to PWM operation occur only in one inverter, improving converter efficiency (10), (11) . The second problem is a zero-sequence current.…”

Section: Introductionmentioning

confidence: 99%

Reduction Method of Zero-Sequence Current in 6-Step Operation on One Side of Dual Inverter with a Common DC-Bus

Ohata,

Haga,

Konoto

et al. 2024

IEEJ Journal IA

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The paper proposes a method for reducing the zero-sequence current in a dual inverter with a common DC-bus. Motor drive systems are required to have higher efficiency, higher power, and smaller size in the electrification of industrial machinery. Hence, 6-step operation on one side of a dual inverter with a common DC-bus is effective. However, increasing the zero-sequence current is problem. Therefore, the proposed method effectively reduces the zero-sequence current in a 6-step operation on one side. The effectiveness of the proposed method is demonstrated by experimental results using an open-end winding PMSM and dual inverter with a common DC-bus. The proposed method reduces the peak-to-peak values of the zero-sequence current by 91.9 % and improves the THD of the phase current by 68.7 pt. compared to the conventional method. The reduction effect of the proposed method is also shown to be effective at higher motor speed. Therefore, the proposed control method achieves effective reduction of zero-sequence current in high-efficiency operation with the 6-step operation on one side.

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New FOM-Based Performance Evaluation of 600/650 V SiC and GaN Semiconductors for Next-Generation EV Drives

2022

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in 1993, and the Ph.D. in Electrical Engineering from Politecnico di Torino, Italy, in 2002. He is a Full Professor of Power Electronics and Electrical Drives in the Energy Department "G. Ferraris" and Chairman of the Power Electronics Innovation Center (PEIC) at Politecnico di Torino, Italy. Dr. Bojoi published more than 200 papers covering electrical drives and power electronics for industrial applications, transportation electrification, power quality, and home appliances. He was involved in many research projects with industry for direct technology transfer aiming at obtaining new products. Dr. Bojoi is the co-recipient of 6 IEEE prize paper awards. Dr. Bojoi is a Co-Editor-In-Chief of the IEEE Transactions on Industrial Electronics.

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Analysis of Double-Bridge Inverters for Drive Systems With Open-End Winding Motors

Cited by 8 publications

References 41 publications

Novel High-Speed Turbo Compressor With Integrated Inverter for Fuel Cell Air Supply

Novel High-Speed Turbo Compressor With Integrated Inverter for Fuel Cell Air Supply

Reduction Method of Zero-Sequence Current in 6-Step Operation on One Side of Dual Inverter with a Common DC-Bus

New FOM-Based Performance Evaluation of 600/650 V SiC and GaN Semiconductors for Next-Generation EV Drives

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