Comprehensive Efficiency Modeling of Electric Traction Motor Drives for Hybrid Electric Vehicle Propulsion Applications

Williamson, Sheldon S.; Emadi, Ali; Rajashekara, Kaushik

doi:10.1109/tvt.2007.896967

Cited by 167 publications

(73 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where = 2 / is the instantaneous phase of the current at the beginning of the th switching period and is the Si IGBT duty-cycle [20,21]. The summations in (8) and (9) are limited to the switching periods belonging to the first half of the supply period because Si IGBTs conduct only positive currents.…”

Section: Si Igbt Loss Modeling the Conduction Losses Of Si Igbtmentioning

confidence: 99%

See 1 more Smart Citation

Quantitative Analysis of Efficiency Improvement of a Propulsion Drive by Using SiC Devices: A Case of Study

Kumar¹,

Bertoluzzo

Buja

et al. 2017

Advances in Power Electronics

View full text Add to dashboard Cite

One of the emerging research topics in the propulsion drive of the electric vehicles is the improvement in the efficiency of its component parts, namely, the propulsion motor and the associated inverter. This paper is focused on the efficiency of the inverter and analyzes the improvement that follows from the replacement of the silicon (Si) IGBT devices with silicon carbide (SiC) MOSFETs. To this end, the paper starts by deriving the voltage-current solicitations of the inverter over the working torquespeed plane of the propulsion motor. Then, a proper model of the power losses in the inverter over a supply period of the motor is formulated for the two types of device, including the integrated freewheeling diode. By putting together the voltage-current solicitations and the device power losses, the efficiency maps of the Si IGBT and SiC MOSFET inverters are calculated and compared over the torque-speed plane. The results for the Si IGBT inverter are supported by measurements executed on a marketed C-segment compact electric car, while the SiC MOSFET loss model is validated by an on-purpose built test bench. Finally, the overall efficiency of the propulsion drive is calculated by accounting for the motor efficiency. Main outcomes of the paper is a quantitative evaluation of both the improvement in the efficiency achievable with the SiC MOSFETs and the ensuing increase in the electric car range.

show abstract

Section: Si Igbt Loss Modeling the Conduction Losses Of Si Igbtmentioning

confidence: 99%

“…By (14), (20), (21), and (25), the total losses are expressed in terms of peak phase current, modulation index, battery voltage, and device parameters.…”

Section: Total Inverter Losses the Total Losses Of The Si Igbt And Smentioning

confidence: 99%

Quantitative Analysis of Efficiency Improvement of a Propulsion Drive by Using SiC Devices: A Case of Study

Kumar¹,

Bertoluzzo

Buja

et al. 2017

Advances in Power Electronics

View full text Add to dashboard Cite

show abstract

“…transmission, motor/inverter, and battery. Based on current BEV designs we consider a single-gear transmission, permanent magnet synchronous electric motor, and a Li-ion battery [17,22,23,24,25].…”

Section: Energy Consumption and Influence Of Vehicle Massmentioning

confidence: 99%

Optimal Lightweighting in Battery Electric Vehicles

Hofer

Wilhelm

Schenler

2012

WEVJ

View full text Add to dashboard Cite

This paper presents an analytic solution to find the optimal amount of lightweighting in a battery electric vehicle (BEV). The additional cost of lightweighting is traded off against the cost savings due to the smaller battery and motor required at constant performance and range. Current technology cost estimates indicate that for a medium sized BEV, optimal glider mass reduction is on the order of 450 kg in 2012 leading to estimated manufacturing cost reductions of 4.9%. Declining powertrain costs are expected to reduce the importance of lightweighting in minimizing BEV cost in the future, and rising electricity costs to increase the gap between the optimal solutions based on minimizing manufacturing versus total costs. The results are strongly dependent on the future development of lightweighting, battery, and electricity costs. The sensitivity of the optimal mass reduction to these critical parameters has been evaluated, and is shown to increase over time.

show abstract

“…In [10], efficiencies for a voltage source inverter and induction motor are presented. Loss models based on equivalent circuits of induction motor and inverter are presented in [11]. A model of a DC power plant is presented in [12].…”

Section: Introductionmentioning

confidence: 99%

Models and Methods for Efficiency Estimation of a Marine Electric Power Grid

Bø

Pedersen

2017

Volume 7A: Ocean Engineering

View full text Add to dashboard Cite

Diesel electric propulsion has become industry standard for many marine applications. Typically, a significant part of the operations of vessels with diesel electric propulsion is done with low loads on the motors and generators. However, the efficiency of a drive train is typically only calculated for full load conditions. This underestimates the losses during low load conditions. This article presents modeling methods for the electric drive train, which can be used to estimate the efficiencies, also at low load. The models are established with limited parameter sets, as detailed information about of the components are seldom available. This article compares the estimated efficiency of the generator and motor with the given data from datasheets.

show abstract

Comprehensive Efficiency Modeling of Electric Traction Motor Drives for Hybrid Electric Vehicle Propulsion Applications

Cited by 167 publications

References 25 publications

Quantitative Analysis of Efficiency Improvement of a Propulsion Drive by Using SiC Devices: A Case of Study

Quantitative Analysis of Efficiency Improvement of a Propulsion Drive by Using SiC Devices: A Case of Study

Optimal Lightweighting in Battery Electric Vehicles

Models and Methods for Efficiency Estimation of a Marine Electric Power Grid

Contact Info

Product

Resources

About