WBG inverter for commercial power generation and vehicle electrification

Murthy-Bellur, Dakshina; Ayana, Elias; Kunin, Sergey; Palmer, Brad; Varigonda, Subbarao

doi:10.1109/iwipp.2015.7295972

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…where i dc is the total current flowing through the capacitor and parallel admittance, and where η < 1 is the efficiency of the inverter, which is assumed to be constant. 1 Expressing the dynamics in the neighborhood of an equilibrium point, yields…”

Section: Dc-link Dynamicsmentioning

confidence: 99%

“…Recent advances in wide-bandgap (WBG) power semiconductor devices, such as silicon carbide (SiC) and gallium nitride (GaN) devices, have been driven by their superior properties, which include high switching frequencies, high blocking voltages, and high junction temperatures. These devices can improve the electrical and thermal performance of power electronic converters, and thus find a very promising application domain in vehicle electrification [1]. A particular outcome of increasing the switching frequency, which is most relevant for this thesis, is the benefit of reducing the capacitance of the dc link, which in turn lowers the size and weight of an inverter thereby increasing its power density.…”

Section: Introductionmentioning

confidence: 99%

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Mitigation of DC-Link Voltage Oscillations Caused by Resolver Error in an Electric Vehicle Drivetrain

Sayed

Aliprantis

et al. 2018

2018 IEEE Energy Conversion Congress and Exposition (ECCE)

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Resolvers are commonly used to measure the rotor position in motor drive applications. However, manufacturing imperfections introduce a position measurement error, which manifests itself as relatively small oscillations primarily at the fundamental and second harmonic frequencies. This affects the field orientation control in machines, leading to oscillations in currents and electromagnetic torque. This research focuses on the impact of position error in a series-hybrid drivetrain architecture. In this topology, substantial oscillations in dc-link voltage are induced, which are further exacerbated by reducing the dc-link capacitance in a bid to lower the overall inverter size and weight. This work sets forth various methods to mitigate the aforementioned dc-link oscillations based on control modifications. To this end, a linearized small-signal detailed model of the drivetrain is developed first to support the analysis of the phenomenon. The effectiveness of these techniques is validated by analytical and experimental results.

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Section: Dc-link Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mitigation of DC-Link Voltage Oscillations Caused by Resolver Error in an Electric Vehicle Drivetrain

Sayed

Aliprantis

et al. 2018

2018 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…Power electronics play a fundamental role in efficient energy conversion and control in various applications, ranging from consumer electronics applications to electric propulsion systems and integrating renewable energy resources in microgrids [1][2][3]. For instance, electric mobility applications demand the implementation of voltage inverter systems for the power supply and control of AC motors for electric traction, such as those reported in [4,5]. Likewise, DC-AC inverters assume a crucial role by allowing the conversion of direct current voltages into alternating current, thus facilitating the integration of DC sources into conventional electrical grids or the power supply of AC loads.…”

Section: Introductionmentioning

confidence: 99%

Enhancing THD Reduction in a 10kW DC-AC Inverter through Non-linear Control: A Fuzzy-PI Approach with Anti-Windup and Passive Filtering

Rodríguez-Flores,

Herrera-Perez,

Pacheco-Cunduri

et al. 2023

Preprint

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This paper presents the mathematical modeling for designing a 10[kW] DC-AC inverter system from 48 [V] DC to 120 V ACrms, considering its non-linear operation, allowing to obtain a detailed simulation to assess the proposed fuzzy PI control (with anti-windup action) and its optimal operation. The performance assessment of the converter was carried out with the discrete treatment of the voltage and current signals using spectral analysis, filtering considerations, and evaluation of limit cycle technique to determine the system's stability. The main results showed that THD at the filter output (transformer and capacitor) was around 0.0322% and 0.0632% at nominal load in open loop and closed loop, respectively. The inverter system presented more sensitivity in the current signal with a ripple at 120 [Hz] of 2.02% and at 5000 [Hz] of 10.62% (at nominal load). However, when the system operates in a closed loop, the current ripple at 120 [Hz] is 2.38% and at 5000 [Hz] is 10.62%.

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“…These are usually based on conventional switching Silicon devices, but in the last years the number of high switching frequency converters consisting of Wide Band Gap (WBG) semiconductors, such as Silicon Carbide (SiC) or Gallium Nitride (GaN), has grown. WBG devices can provide improved performance than traditional power switches [2]- [4]. The main advantages related to their use are:…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis on the Voltage Distribution within Windings of Electrical Machines fed by Wide Band Gap Converters

Pastura

Nuzzo

Franceschini

et al. 2020

2020 International Conference on Electrical Machines (ICEM)

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In the last years, wide band gap devices are seeing a significant widespread in electric drives, due to their higher performance compared to conventional semiconductors. However, they also produce higher electric stress due to overvoltages and uneven voltage distributions among winding turns of electrical machines fed by them, which can lead to premature failures and/or reduced lifetimes.This paper presents a sensitivity analysis on the voltage distribution across stator winding turns of an electric motor intended for aerospace applications. The effects of the surge voltage characteristic parameters, such as dv/dt, voltage magnitude and parasitic impedances, are investigated. An equivalent circuit approach, based on the multi-transmission line theory, is developed and implemented in MatLab-Simulink environment, while the relevant circuital parameters are estimated through finite element analysis performed with MagNet® and ElecNet® software.

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WBG inverter for commercial power generation and vehicle electrification

Cited by 6 publications

References 8 publications

Mitigation of DC-Link Voltage Oscillations Caused by Resolver Error in an Electric Vehicle Drivetrain

Mitigation of DC-Link Voltage Oscillations Caused by Resolver Error in an Electric Vehicle Drivetrain

Enhancing THD Reduction in a 10kW DC-AC Inverter through Non-linear Control: A Fuzzy-PI Approach with Anti-Windup and Passive Filtering

Sensitivity Analysis on the Voltage Distribution within Windings of Electrical Machines fed by Wide Band Gap Converters

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