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Use of renewable sources of energy for charging of electric vehicle(EV) batteries have generated tremendous interest. The use of off-board DC chargers to reduce the weight and increase space inside an electric vehicles has been an important area of interest. Harvesting solar energy to charge electric vehicle batteries can result in large inefficient systems when multiple power conversion stages are...
In this paper small-signal model of a symmetrical clamped mode controlled series-series compensated inductive power transfer (IPT) system has been derived using the extended describing function (EDF) method. The derived model has duty cycle, input voltage and switching frequency as control variables and an output voltage as an output variable. A voltage controller has been designed for symmetrical...
Ultracapacitors (UCs) are the significant component of the energy storage systems (ESS) in the electric traction applications. In the field of electric transportation the UCs need to be modeled dynamically in order to capture real-time characteristics. The model should provide precise estimation of UC responses to various charge/discharge conditions and also predict the behavior of UCs under varied...
In order to capture real-time characteristics of ultracapacitors (UCs), especially for electric transportation applications, they need to be modeled dynamically. Dynamic models provide accurate estimation of UC charge/discharge responses to varied inputs. Dynamic models are useful in predicting the behavior of UCs under varied load conditions. Also, it is critical to build an accurate UC model, which...
This paper concentrates on the application of a three-level Neutral-Point Clamped (NPC) inverter in a Permanent Magnet Synchronous Motor (PMSM) driven electric vehicle. Carrier-Based Space Vector Modulation (CB-SVM) strategy allows a simple technique for inverter switching. A split-capacitor dc bus voltage balancing strategy using a simple PI controller has been presented for the entire speed range...
For the last two decades, significant improvements in charging technologies have been made. Moreover, novel applications have been proposed and tested, obtaining important and promising results. Inductive charging for electric vehicles (EV) and hybrid electric vehicles (HEV) is one of them. Because of the positive impact that this technology represents, it is important to understand the general characteristics...
Permanent magnet synchronous machines particularly, interior magnet type (IPMSM) have been widely used in industries and traction of hybrid and electric vehicle (HEVs, HEVs) applications. Owing to their unique merits due to high efficiency, high power density, fast dynamic response, high torque to inertia ratio and Compactness, they are one of the most competitive candidates for electric vehicle applications...
Batteries play a critical role in Hybrid Electric Vehicles (HEV) and Plug-In HEV (PHEV) as one of the main energy sources because of their high energy density. Therefore, for designing purposes suitable battery models are necessary. Batteries have very nonlinear behavior and are dependent on many factors such as chemistry, temperature, load profile, charge/discharge algorithm, age, etc. Modeling the...
Many high performance industrial and traction permanent magnet synchronous motor (PMSM) drives require position sensorless operation. Most of the sensorless control techniques are dependent on motor parameters, such as stator resistance, inductance, and torque constant. Thus, the performance suffers greatly in harsh and highly dynamic operating conditions, where the motor parameters are changing....
This paper investigates the impact of supply harmonic voltages on DFIG stator current and power spectra. The influence of individual higher order supply harmonics on DFIG stator current and on total instantaneous power spectral content is investigated using a time-stepped circuit model. The observed effects are identified in experimental data obtained from a laboratory test rig. A set of analytical...
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