Journal ArticleDOI
A Controllable 45-kW Current Source for DC Machines
TLDR
In this article, a dc converter for the drive and control of a 45-kW traction motor in single quadrant operation with an efficiency of 96 percent is presented, which is due to the natural termination of thyristor currents, the positive confinement of the maximum momentary current and voltage stresses in the components below preset levels, and the low power dissipation in these components supported by a definite protection philosophy.Abstract:
A new type of dc converter for the drive and control of a 45-kW traction motor in single quadrant operation with an efficiency of 96 percent is presented. An improvement of the converter's reliability is due to the natural termination of thyristor currents, the positive confinement of the maximum momentary current and voltage stresses in the components below preset levels, and the low power dissipation in these components, supported by a definite protection philosophy. The high converter efficiency is attained at full power operation with an internal frequency of 10 kHz. The input impedance maintains its resistive character for all conditions of operation. The output port is characterized as a voltage-limited current source. Test data of an experimental model conclude the presentation of the converter's functional philosophy.read more
Citations
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Journal ArticleDOI
A three-phase soft-switched high power density DC/DC converter for high power applications
TL;DR: In this paper, three DC/DC converter topologies suitable for high power-density high power applications are presented, which operate in a soft-switched manner, making possible a reduction in device switching losses and an increase in switching frequency.
Journal ArticleDOI
Performance characterization of a high-power dual active bridge DC-to-DC converter
TL;DR: In this article, the performance of a high-power, high-density DC-to-DC converter based on the single-phase dual active bridge (DAB) topology is described.
Journal ArticleDOI
The resonant DC link converter-a new concept in static power conversion
TL;DR: In this paper, a resonant DC-link inverter was proposed and realized with the addition of only one small inductor and capacitor to a conventional voltage source inverter circuit.
Journal ArticleDOI
Zero-switching-loss inverters for high-power applications
Deepakraj M. Divan,G. Skibinski +1 more
TL;DR: In this paper, two topologies for realizing zero switching losses in high-power converters are proposed: the actively clamped resonant pole inverter (RPI) and the quasi-resonant current mode inverter.
Patent
Contactless battery charging system
TL;DR: In this paper, a contactless recharging system and method for recharging a battery storage device onboard an electric vehicle is described, where the vehicle has a primary converter station (20, 102, 202, 304) for converting power from a power source into high frequency power at a selected charging rate.
References
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Journal ArticleDOI
An Improved Method of Resonant Current Pulse Modulation for Power Converters
TL;DR: In this paper, a converter philosophy for controlled transfer and transformation of electric energy through internal series resonant circuits at high internal power frequencies in excess of 10 kHz is presented, which is suited for construction of failsafe and highly efficient, low cost, submegawatt, single module converters with currently available components.
Journal ArticleDOI
A Controllable Secondary Multikilowatt DC Current Source With Constant Maximum Power Factor in its Three-Phase Supply Line
TL;DR: In this paper, a dc converter for sub-megawatt applications is described and illustrated with the characteristics of a small scale 10 kW model, which is characterized by the behavior of a true current source with inherent short circuit capability of its output terminals.
Journal ArticleDOI
A Time-Domain Analysis of the Power Factor for a Rectifier Filter System with Over- and Subcritical Inductance
TL;DR: In this paper, a simple switching network in form of a rectifier filter is analyzed with application of time-domain methods, and exact expressions are derived for currents in the filter network and the ac supply line as functions of the size of a series inductor in the L-type low pass filter connected to a resistive load.
Patent
Electronic control system for efficient transfer of power through resonant circuits
TL;DR: In this article, a device to control the transfer of energy via resonant circuits from a D.C. source of electric energy to a load is presented. But the device confines the resonant currents to near the magnitude needed to accomplish this controlled transfer within prescribed limits, independent of variations of the source voltage or the load.