Proceedings ArticleDOI
A >98% efficient >150 kRPM high-temperature liquid-cooled SiC VFD for hybrid-electric turbochargers
Troy Beechner,Andrew L. Carpenter +1 more
- pp 3674-3680
TLDR
In this paper, a high-efficiency, high-speed variable frequency drive (VFD) was used in an electrically-assisted turbocharging application with the goal of reducing turbo lag and extracting electrical energy during vehicle braking and deceleration events.Abstract:
This paper presents a high-efficiency, high-speed variable frequency drive (VFD) used in an electrically-assisted turbocharging application with the goal of reducing turbo lag and extracting electrical energy during vehicle braking and deceleration events To maximize switching frequency and achieve high-temperature operation, SiC MOSFETs are used in lieu of Si IGBTs or MOSFETs Furthermore, the VFD is cooled using the existing engine coolant loop, which operates near 105 deg C Eliminating the need for an additional 65 deg C liquid cooling loop, which are typical of electric vehicles, significantly reducing system complexity, volume, and weight and simplifying integration A digital sliding-mode-observer (SMO) was developed to drive the machine at a ramp rate of over 68 kRPM/sec A dead-time compensation algorithm based upon adaptive notch filters was used to eliminate low-order current harmonics, which can degrade the sensorless control algorithm's performance Experimental results are presented confirming the VFD's efficiency, dynamic control performance, low-THD load current, and high-temperature operation Lastly, using a previously developed electro-thermal model, the VFD is extended to higher voltage (450 V ac ) motors for application in future vehicle traction drives The results show that the presented drive exceeds the Department of Energy's targets for traction drives in 2020read more
Citations
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Journal ArticleDOI
Discrete-Time Adaptive Controller for Unfixed and Unknown Control Direction
TL;DR: An adaptive controller is proposed for unknown nonlinear discrete-time systems when the control direction is unknown and unfixed and two fuzzy rules emulated networks are utilized to establish a system dynamic model which provides the control-gain and the controldirection.
Journal ArticleDOI
Robotic architecture as unknown discrete-time system based on variable-frequency drive and adaptive controller
TL;DR: The new architecture for outdated robotic arm (ABB: IRB-1400) is developed by the direct variable-frequency drive and considered as a class of unknown nonlinear discrete-time systems.
Journal ArticleDOI
Hybrid-Electric Turbocharger and High-Speed SiC Variable-Frequency Drive Using Sensorless Control Algorithm
TL;DR: In this paper, a hybrid-electric turbocharger, variable-frequency drive (VFD), and novel sensorless control algorithm were developed, which can lead to better overall vehicle performance, emissions, and efficiency while allowing for further engine downsizing and increased power density.
Journal ArticleDOI
Discrete-time adaptive controller based on IF-THEN rules database for novel architecture of ABB IRB-1400
TL;DR: The experimental system is constructed to validate the performance of the robotic system and the proposed controller altogether with comparative results from existent schemes.
Proceedings ArticleDOI
Reliability Oriented Design of Dual Active Bridge Converter for Power Supply on Heavy-Vehicles
TL;DR: A method is proposed in the paper to realise a design of a DAB based PEBB for maximum system availability by minimising the lifetime consumption of the semiconductor device for a defined load-cycle.
References
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Journal ArticleDOI
On-line dead-time compensation technique for open-loop PWM-VSI drives
A.R. Munoz,Thomas A. Lipo +1 more
TL;DR: In this article, a new on-line dead-time compensation technique for low-cost open-loop PWM-VSI drives is presented, which uses an instantaneous back calculation of the phase angle of the current.
Journal ArticleDOI
A High-Density, High-Efficiency, Isolated On-Board Vehicle Battery Charger Utilizing Silicon Carbide Power Devices
Bret Whitaker,Adam Barkley,Zach Cole,Brandon Passmore,Daniel Martin,Ty McNutt,Alexander B. Lostetter,Jae Seung Lee,Koji Shiozaki +8 more
TL;DR: In this article, an isolated on-board vehicular battery charger that utilizes silicon carbide (SiC) power devices to achieve high density and high efficiency for application in electric vehicles (EVs) and plug-in hybrid EVs (PHEVs).
Proceedings ArticleDOI
On-line dead time compensation technique for open-loop PWM-VSI drives
A. Munoz-Garcia,Thomas A. Lipo +1 more
Abstract: A new online dead-time compensation technique for low cost open-loop PWM VSI-fed drives is presented. Because of the growing numbers of open-loop drives operating in the low speed region, the synthesis of accurate output voltages has become an important issue where low cost implementation plays an important role. The so-called average dead time compensation techniques rely on two basic parameters to compensate for this effect: the magnitude of the volt-seconds lost each PWM cycle; and the direction of the current. In a low cost implementation, it is impractical to attempt an online measurement of the volt-seconds error introduced each cycle; instead an offline measurement is favored. On the other hand, the current-direction detection must be done online. This becomes increasingly difficult at lower frequencies and around the zero crossings leading to erroneous compensation and voltage distortion. This paper presents a simple and cost effective solution to this problem by using an instantaneous back calculation of the phase angle of the current. Given the closed loop characteristic of the back calculation, the zero crossing of the current is accurately obtained, thus allowing for a better dead time compensation. Experimental results validating the proposed method are presented.
Journal ArticleDOI
Discrete-Time Sliding Mode Observer for Sensorless Vector Control of Permanent Magnet Synchronous Machine
TL;DR: Experimental results validate the theoretical analysis and demonstrate the very good performance of the proposed discrete-time sensorless vector control.
Journal ArticleDOI
Adaptive Compensation Method of Position Estimation Harmonic Error for EMF-Based Observer in Sensorless IPMSM Drives
TL;DR: In this paper, a quadrature phase-locked loop (PLL) with an adaptive notch filter (ANF) is proposed for the model-based sliding-mode observer (SMO) to improve the performance of sensorless interior permanent magnet synchronous motor (IPMSM) drives.