Enhanced Performance of Dual Inverter With a Floating Capacitor for Motor Drive Applications

Huang, Zujian; Yang, Tao; Giangrande, Paolo; Chowdhury, Shajjad; Galea, Michael; Wheeler, Patrick

doi:10.1109/tpel.2020.3040029

Cited by 31 publications

(18 citation statements)

References 25 publications

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“…In this work, the indicator k shown in Table I is employed to compare the voltage utilizations of the dual inverters. It is calculated by dividing the maximum output voltages from a dual inverter V ref,max over the voltage from its DClink voltage V dc / √ 3 within the linear modulation region, as expressed in (5) [25].…”

Section: Dual Invertermentioning

confidence: 99%

“…If suitable voltage ratios are chosen, an increased number of output voltage levels [31], [33], [34], [38] or a boosted DC-link voltage utilization of dual inverters can be achieved [16], [40]- [42]. It has been revealed in [25] that the voltage ratio would define the 1) distribution of switching states; 2) area of space vector diagram; and 3) number of output levels. After selecting the ratios, the main issue is to properly regulate the FC voltage at that ratio.…”

Section: B Type IIImentioning

confidence: 99%

“…However, regardless of different DC-link voltages, greater utilization of the power inverters is highly expected [23]. A larger speed without field weakening could allow the machine to minimize its weight and volume considerately, which can be beneficial for MEA applications [24], [25].…”

mentioning

confidence: 99%

“…It is reported the dual inverters can enhance their performance by identifying appropriate voltage ratios. The improvement consists of improving the converter output quality by increasing the number of output voltage levels [25], [31], [33]- [38] and boosting the DC-link voltage utilization [16], [25], [39]- [42]. However, similar to a CHI, an FCI, or a DCI, the capacitors' voltages of the dual inverters also have to be properly controlled.…”

mentioning

confidence: 99%

“…Otherwise, the voltage steps that are clamped by capacitor voltages would be altered, and then undesirable harmonic distortion will be induced in the inverter output, deteriorating its quality. To fully exploit the potentials of dual inverters with exclusive design freedom, the capacitor voltage regulation is the main challenge [25].…”

mentioning

confidence: 99%

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Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications

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Section: Dual Invertermentioning

confidence: 99%

Section: B Type IIImentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications

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Bibliography analysis of Multilevel Inverters (2021-2022)

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An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives

Yang

Huang

et al. 2021

IEEE Access

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This paper introduces an advanced space vector modulation technique for three-level neutralpoint-clamped (3L-NPC) converters. The studied 3L-NPC converters within aircraft electric starter generator (ESG) systems normally operate at high modulation index, low pulse ratio and full power factor range for most of the operation time. Conventional modulation techniques exhibit large neutral point voltage ripple and possible voltage imbalance under such conditions. The increase of neutral point voltage ripple implies significant increase in converter capacitor size and decrease in capacitor reliability. The modulation technique introduced in this paper achieves improved neutral point voltage balancing within each switching period through enhanced applications of small vectors and restriction on medium vectors. The advanced implementation of small vectors is achieved using a sharing factor aided by a robust incremental current prediction procedure. With the predicted machine currents, the proposed method enables the optimum application of small vectors to balance the neutral point voltages. Simulation results based on a PLECS/Simulink model and experimental results obtained from a 45kVA, 32krpm aircraft electric starter generator prototype platform validate the reduction of the neutral point voltage ripple.INDEX TERMS Aircraft, electric starter generator (ESG), high-speed drive, three-level neutral-pointclamped converter, pulse width modulation, predictive control, state observer

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Enhanced Performance of Dual Inverter With a Floating Capacitor for Motor Drive Applications

Cited by 31 publications

References 25 publications

Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications

Technical Review of Dual Inverter Topologies for More Electric Aircraft Applications

Bibliography analysis of Multilevel Inverters (2021-2022)

An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives

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