A highly integrated drive inverter using DirectFETs and ceramic dc-link capacitors for open-end winding machines in electric vehicles

Engelmann, Georges; Kowal, Maurice; Doncker, Rik W. De

doi:10.1109/apec.2015.7104365

Cited by 19 publications

(9 citation statements)

References 5 publications

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“…In combination with the extraordinary design specifications in IMMD applications, this might force the designer to introduce simplifications for the first iteration of the design process. In the reported experimental IMMD realizations of [5], [6] and [7], the DC link architecture design was simplified to a single-criterion, multi-degrees-of-freedom design problem. Their design's performance with respect to other criteria was however not mentioned.…”

Section: Selection Of the Capacitor And Inductor Technologymentioning

confidence: 99%

A holistic DC link architecture design method for multiphase integrated modular motor drives

Verkroost

Vansompel

Belie

et al. 2019

2019 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

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This article describes a holistic DC link architecture design method that considers the end-application of the drive and its corresponding constraints e.g. the maximum battery ripple current for a battery-supplied inverter. Also, the levers that are available to comply with the design criteria are presented e.g. the use of interleaved carrier waves. This holistic approach will result in a feasible and performant Integrated Modular Motor Drive from an application point of view. Finally, a platform is presented that was developed for feasibility and performance assessment of various DC link architectures obtained from the holistic design approach. The platform comprises a fifteen phase integrable modular motor drive for an Axial Flux Permanent Magnet Synchronous Machine. It allows non-intrusive reconfiguration of the DC link architecture and implementation of various control strategies and interleaved PWM schemes.

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Section: Selection Of the Capacitor And Inductor Technologymentioning

confidence: 99%

A holistic DC link architecture design method for multiphase integrated modular motor drives

Verkroost

Vansompel

Belie

et al. 2019

2019 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

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“…switching frequency, modulation index, number of modules, aspect ratio) on the system efficiency and power density is studied. In [16], a six-phase modular inverter is designed for axial integration in electric vehicle drives as a separate subsystem with focus on minimization of the DClink capacitors height. In [17], a high power density axially stator mounted modular integrated drive based on modular twelve half-bridge inverter is developed for Unmanned Aerial Vehicles.…”

Section: Introductionmentioning

confidence: 99%

Electrothermal Design of a Discrete GaN-Based Converter for Integrated Modular Motor Drives

Mohamed

Vansompel

Sergeant

2021

IEEE J. Emerg. Sel. Topics Power Electron.

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Integrated modular motor drives have a compact and high fault tolerant structure compared to their conventional counterparts. The most challenging issue in the implementation of these drives is the thermal management of the inverter modules due to the small space available for each module and its physical proximity to the machine windings with their high heat production. The electro-thermal design of a discrete halfbridge inverter module for a radially stator mounted axial flux integrated drive is introduced in this paper. The inverter modules are mounted on the stator, radially along the circumference. The converter is implemented using GaN technology and the size is optimized. The structure of the presented integration topology from the case of the switches to the cooling ambient is optimized from the thermal point of view. The converter is modelled using steady state and transient lumped parameter thermal networks to estimate the steady state and the instantaneous temperature of the switches. The converter parasitics are extracted using FEM simulations and their influence on the switch loss and temperature is evaluated. The lumped parameter modelling is validated with CFD simulations and experimental measurements.

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“…With more rigorous demands for energy savings and environmental protection in industry and the vigorous development of electric vehicles driven by electric motors nowadays, PMSM has become the typical electric motor in electric vehicles because of its advantages such as high-power density and a simple control scheme. In recent years, a drive system constituting an OW-PMSM (open-end winding permanent magnet synchronous motor) and dual inverters has received extensive application [1][2][3][4][5]. This system is actuated via attaching both ends of OW-PMSM's stator windings with an inverter.…”

Section: Introductionmentioning

confidence: 99%

Research on Control Strategies of an Open-End Winding Permanent Magnet Synchronous Driving Motor (OW-PMSM)-Equipped Dual Inverter with a Switchable Winding Mode for Electric Vehicles

et al. 2017

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An open-end winding permanent magnet synchronous motor (PMSM) has a larger range of speed regulation than normal PMSM with the same DC voltage, and the control method is more flexible. It can also manage energy distribution between two power sources without a DC/DC converter. This paper aims at an electric vehicle equipped with OW-PMSM drive system with dual power sources and dual inverters; based on analyzing the external characteristics of each winding mode, we propose a winding mode switching strategy whose torque saturation judgmental algorithm, which is insensitive to motor's parameters, could automatically realize upswitching of the winding mode. The proposed multi-level current hysteresis modulation algorithm could set the major power source and switch it at any time in independent mode, which accomplishes energy distribution between two power sources; its two control methods, low switching frequency method and high power difference method, could achieve different energy distribution effects. Simulation results confirm the validity and effectiveness of the winding mode switching strategy and current modulation method. They also show that an electric vehicle under the proposed control methods has better efficiency than one equipped with a traditional OW-PMSM drive system under traditional control.Control strategies of OW-PMSM and dual inverters have always been a research focus. Winding topology and configurations are widely discussed in order to optimize the motor's working range and efficiency [17][18][19]. and zero-sequence voltage elimination method [23,24] are also under extensive research. Loncarski, J. et al. compared the output current ripple in single and dual inverter motor drives for electric vehicles, concluding that the dual-2L inverter can act as a 3L inverter and offers a significant ripple reduction [2], which can also be observed in this paper. AnQun-tao, Sun Li et al. proposed a dual inverters SVPWM modulation method for current control and in this way voltage vector synthesized in the range of a hexagon and when the bus voltage remains constant, the base speed of the electric motor could be 1.7 times that in Y-connection without generating zero-sequence voltage [7,8]. Zhan H., Heng N. et al. studied a common DC bus-based dual inverters SVPWM modulation strategy. In this way, the amplitude of the voltage vector could be maximized and at the same time a zero-sequence current could be suppressed [23,24]. Welchko studied dual sources-based dual inverters' voltage vectors distribution, and proposed three types of voltage distribution methods to adapt to different working conditions of hybrid vehicles to achieve energy management functions between two power sources [16]. However, the two inverters work independently without coordination, and thus the switching frequency of inverter devices has also doubled, which increases the inverter switching loss. All the studies discussed above have proposed current control methods of dual inverters but division of OW-PMSM winding modes and winding modes ...

show abstract

A highly integrated drive inverter using DirectFETs and ceramic dc-link capacitors for open-end winding machines in electric vehicles

Cited by 19 publications

References 5 publications

A holistic DC link architecture design method for multiphase integrated modular motor drives

A holistic DC link architecture design method for multiphase integrated modular motor drives

Electrothermal Design of a Discrete GaN-Based Converter for Integrated Modular Motor Drives

Research on Control Strategies of an Open-End Winding Permanent Magnet Synchronous Driving Motor (OW-PMSM)-Equipped Dual Inverter with a Switchable Winding Mode for Electric Vehicles

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