2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289)
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A 1/spl phi/3W grid-connection PV power inverter with partial active power filter
Tập 3 - Trang 1512-1517 vol.3
This paper presents a single-phase three-wire (1/spl phi/3W) grid-connection
photovoltaic (PV) power inverter with a feature of a partial active power filter
(PAPF), which can not only deal with PV power but can filter current harmonics
and improve power factor. Once the processed power exceeds the switch ratings,
the inverter can reduce its output reactive power and harmonic power, while
still ca...
#Inverters #Active filters #Power harmonic filters #Reactive power #Power system harmonics #Switches #Power generation #Photovoltaic systems #Solar power generation #Phase detection
An instructional laboratory for the revival of electric machines and drives courses
Tập 2 - Trang 455-460 vol.2
This paper describes the developments at the University of Minnesota of new
approach in teaching of electric drives, focusing on the associate
state-of-the-art laboratory. The mission of these developments is to nationally
revitalize courses in industrially and strategically vital fields of electric
drives (and power electronics). This is accomplished by making these courses
appealing to students ...
#Laboratories #Electric machines #Power electronics #Drives #Continuing education #Digital control #Hardware #Electronics industry #Electric motors #Voltage
Problems of paralleling windings for planar transformers and solutions
Tập 2 - Trang 597-601 vol.2
In today's power converters, paralleling windings in planar transformers is
common, especially for low voltage and high current applications. Although this
practice is usually believed to be an effective way to increase the current
handling capacity of the windings, the effect might not be so significant due to
the unequal current distribution within parallel layers if the layers are not
properly ...
#Transformers #Copper #Current distribution #Frequency #Inductance #Power electronics #Low voltage #Solids #Wire #Assembly
Power integrated circuit drives based on HV NMOS
Tập 4 - Trang 1737-1740 vol.4
This paper presents high voltage (HV) NMOS based level shifters, bootstraps and
charge pumps in direct and cascaded topologies, which are highly useful to
implement either power integrated circuits (PICs) high-side transistor floating
drives or compact inductorless DC-DC power supplies. Monolithic solutions
resorting to a unique HV NMOS switching cell are very important when standard
CMOS technolo...
#Power integrated circuits #MOS devices #Voltage #CMOS technology #Charge pumps #Integrated circuit technology #Costs #Circuit topology #Power supplies #Geometry
Industrial implementation of a controlled sensorless synchronous drive with hard start conditions
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The subject of this paper is a synchronous drive of grinding ball mills 4 MW,
150 rpm, 6 kV, 50 Hz on the base of PWM CSI. The system is installed at the
concentrating plant of Norilsknickel in Russia. Specific to this drive is large
stalling torque-up to 125% of rated torque. This is a sensorless drive. Another
specific feature is the necessity of synchronization with power system and
switching t...
#Industrial control #Sensorless control #Torque #Power system simulation #Pulse width modulation #Synchronous motors #Milling machines #Frequency #Voltage #Automatic control
2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289)
Tập 3 - 2002
Presents the front cover of the proceedings record.
Optimized piezoelectric energy harvesting circuit using step-down converter in discontinuous conduction mode
Tập 4 - Trang 1988-1994 vol.4
An optimized method of harvesting vibrational energy with a piezoelectric
element using a step-down DC-DC converter is presented. In this configuration,
the converter regulates the power flow from the piezoelectric element to the
desired electronic load. Analysis of the converter in discontinuous current
conduction mode results in an expression for the duty cycle-power relationship.
Using paramete...
#Circuits #Piezoelectric devices #Voltage #DC-DC power converters #Vibrations #Batteries #Rectifiers #Load flow #Power supplies #Resistance heating
A new green power inverter for fuel cells
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This paper presents a new grid connected inverter for fuel cells. It consists of
a two stage power conversion topology. Since the fuel cell operates with a low
voltage in a wide voltage range (25 V-45 V) this voltage must be transformed to
around 350-400 V in order to invert this DC power into AC power to the grid. The
proposed converter consists of an isolated DC-DC converter cascaded with a
sing...
#Inverters #Fuel cells #DC-DC power converters #Reactive power #Power conversion #Topology #Low voltage #Surges #Resistors #Emulation
Layout optimization to reduce EMI of a switched mode power supply
Tập 4 - Trang 2021-2026 vol.4
This paper shows how to reach the "best" possible layout, satisfying
simultaneously the minimal surface, all technological constraints due to the
geometry of the components, and a reduced EMC signature. For this purpose, all
components must be modeled in the high frequency domain, including
interconnects. An interesting harmonic approach is used to predict EMI spectrum,
which avoids the prohibitiv...
#Switched-mode power supply #Electromagnetic interference #Electromagnetic compatibility #Capacitors #Circuit simulation #Predictive models #Insulation life #Geometry #Frequency domain analysis #Integrated circuit interconnections
A new approach to low conversion ratio DC-DC converters
Tập 2 - Trang 431-436 vol.2
Low output voltage, nonisolated, DC-DC converters are the focus of much
investigation. The primary application of these converters is as the voltage
regulating module of low voltage microprocessors. Efficiency, power density as
well as dynamic response are the primary performance criteria that are
optimised. A new proposed DC-DC conversion system is presented making possible a
reduction in switch ...
#DC-DC power converters #Microprocessors #Low voltage #Switches #Filters #Buck converters #Filtering #Vehicle dynamics #Bidirectional control #Topology