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Recently electric vehicles are taken up as successor to conventional gasoline engine vehicles and many researchers have focused on motion control of electric vehicle. This paper describes a strategy to assist the vehicle driver using an accelerator pedal and a steering wheel is considered. In particular, the accelerator pedal is called haptic pedal and the combination control of steer-by-wire and...
In order to reduce power consumption of electronic equipment in stand-by mode, idle-mode and sleep-mode, a simple efficiency improvement technique for switching regulator in light load region is proposed. During the light load, small switching elements in a MOSFET driver circuit are used instead of switching elements in a main regulator circuit to reduce switching and driving losses. Of course, during...
A current controlled driver for a Dielectric Barrier Discharge (DBD) lamp is proposed in this paper as opposed to most of the published drivers which are voltage controlled drivers. The design of this driver is intended to enhance the electrical to optical efficiency of the lamp and therefore enhancing the overall efficiency of the system. The driver topology permits direct control of the peak lamp...
A novel active gate drive method for high power IGBTs is proposed in this paper. It makes use of 2 simple capacitors and several Transient Voltage Suppressors (TVS) to gain different feedback gains in different turn-off transient period, in order to suppress the turn-off over voltage and control turn-off voltage rise slope. Comprehensive study among several application oriented methods is carried...
This paper presents a new CIPOS™ (Control Integrated Power System) in DIL (Dual-in-line) package, which combines with the features of Infineon trench field stop RC (Reverse conducting) IGBT and a newly optimized Infineon SOI (Silicon On Insulator) gate driver to achieve the excellent solution for up to 2.5kW motor drives. It also comes along with flexible internal schematics, which are tailor made...
This paper deals with a resonant gate-drive circuit for fast and high-voltage power semiconductor devices, which is equipped with optical fibers for both gate control signal and dc power supply. A resonant inductor connected with the gate terminal makes it possible to charge or discharge the gate-to-source voltage by using the parallel resonance between the inductor and the input capacitance of the...
This paper proposes a high efficiency driving circuit for multiple high-brightness light emitting diode (HB-LED) lamps with dimming feature. A high-frequency half-bridge series resonant inverter is adopted as a current driver. By appropriately controlling the frequency of the active switches and the resonant tank, the lamp currents can be regulated effectively. On the other hand, the LED lamps can...
This paper studies boost methods for NCPBD, which is a boost driver with a small and reasonable configuration. These methods are realized by implementing the switching for the DC link voltage boost in SVM for the motor voltage control. The experimental results confirm that these methods enable NCPBD to boost the DC link voltage without degrading the motor drive performance. In addition, these methods...
This paper proposes a novel dimming control scheme which possesses six-phase PWM dimming control for backlight inverter. We adopt six-phase PWM dimming control circuit to control the brightness of twelve lamps. Each phase driving circuit can control two lamps. Circuit architecture is full bridge circuit which can improve the total efficiency of driving circuit. Due to single-phase PWM dimming consumes...
In this paper, in order to realize high voltage static switches of voltage source inverters in high power applications, two series connected 4.5kV rate Si-IEGT with SiC-PiN diode pairs (hybrid combination) are considered with hard switching method. The switching test of power module that is hybrid combination is carried out under 5kV DC bias voltage. The gate driver circuit is designed by high output...
This paper addresses the effect of the gate driving capability on the efficiency of synchronous buck converters. To reduce the switching loss in DC-DC converters, the gate drivers are often designed to turn the power MOSFETs on/off as quickly as possible. However, for fast turn on/off, gate drivers with high driving capability and consequently high power consumption are required. Since the gate driver...
A transition-mode (TM) dimmable high brightness light-emitting-diode (LED) driver for general and residential illumination applications is presented. An improved pulse-width modulation dimming technique utilizing a low cost micro-controller is studied and implemented with a current-regulated LED drive. Under universal input voltage operation, high power factor and high efficiency can be achieved by...
This paper presents an integration of the interleaved bi-directional DC/DC converter with a vector controlled permanent magnet synchronous motor (PMSM) drive to give the motor operating in high speed with minimum copper loss control. The interleaved DC/DC converter is designed in the discontinuous conduction mode (DCM) such that the controller design becomes straightforward. The large signal perturbation...
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