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
Tập 3 - Trang 1167-1171 vol.3
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
Estimation method of disturbances generated by a voltage diode rectifier in discontinuous mode in association with a LISN
Tập 4 - Trang 1785-1790 vol.4
Today, converters are more and more efficient. However, this increase in technology remains limited by the production cost. In spite off the rapid rise in the development of complex PFC systems, simple solutions are usually used. The voltage diode rectifier remains the easiest. The harmonic generation through an EMI filter or passive elements is one of its main problems. In order to understand the......
#Voltage #Diodes #Rectifiers #Production #Costs #Frequency conversion #Electromagnetic interference #Passive filters #Phase noise #Frequency domain analysis
A new three-input/output characteristics-varying filter in the D-module for direct processing of three-phase signals
Tập 3 - Trang 1413-1418 vol.3
This paper proposes a new three-input and three-output characteristics-varying filter in the D-module for direct processing of three-phase signals, which are becoming indispensable for effective active compensation of three-phase power such as harmonics current, negative phase current, reactive power and varying voltage compensations. The filter in the D-module can show different filtering charact......
#Signal processing #Power harmonic filters #Electronic mail #Power system harmonics #Reactive power #Voltage #Frequency
Electromagnetic design optimization of planar integrated power passive modules
Tập 2 - Trang 573-578 vol.2
Integration of passive components, such as the planar L-C-T (inductor-capacitor-transformer) technology has been the subject of research over the last few years and has been proven to be viable at high frequencies. In this paper the electromagnetic (EM) design of planar L-L-C-T structures is considered. With a comprehensive, yet simple loss model including nonlinear excitation and skin- and proxim......
#Design optimization #Inductance #Magnetic resonance #Magnetic flux #Power electronics #RLC circuits #Equivalent circuits #Magnetic separation #Prototypes #Power engineering and energy
A novel IGBT inverter module for low-power drive applications
Tập 2 - Trang 642-647 vol.2
This paper presents a novel three-phase IGBT module called the SPM (Smart Power Module). This is a new design developed to provide a very compact, low cost, high performance and reliable motor drive system. Several distinct design concepts were used to achieve the highly integrated functionality in a new cost-effective small package. An overall description to the SPM is given and actual applicatio......
#Insulated gate bipolar transistors #Inverters #Scanning probe microscopy #Multichip modules #Costs #Integrated circuit reliability #Power system reliability #Motor drives #Packaging #Electric variables
Zero-voltage and zero-current-switching PWM hybrid full-bridge three-level converter
Tập 4 - Trang 1847-1852 vol.4
This paper proposes a zero-voltage and zero-current-switching PWM hybrid full-bridge three-level converter (ZVZCS PWM H-FB TL converter), which has a three level (TL) leg and a two-level leg. The voltage stress of the switches of the TL leg is half of the input voltage, and the switches can realize ZVS, so the MOSFET can be adopted. The voltage stress of the switches of the two-level leg is the in......
#Pulse width modulation #Zero current switching #Leg #Switches #Pulse width modulation converters #Stress #Filters #Zero voltage switching #MOSFET circuits #Insulated gate bipolar transistors