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...... hiện toàn bộ
#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 ...... hiện toàn bộ
#Laboratories #Electric machines #Power electronics #Drives #Continuing education #Digital control #Hardware #Electronics industry #Electric motors #Voltage
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...... hiện toàn bộ
#Power integrated circuits #MOS devices #Voltage #CMOS technology #Charge pumps #Integrated circuit technology #Costs #Circuit topology #Power supplies #Geometry
Analysis and comparison of hybrid multilevel voltage source inverters
Tập 2 - Trang 491-496 vol.2
This paper analyzes different hybrid multilevel inverters for high-power applications. With these hybrid topologies, it is possible to minimize the number of series-connected inverters for a given number of levels and, consequently, to reduce the THD of output voltage. Moreover, this paper develops a comparison among different hybrid multilevel inverters, especially between binary and trinary hybr...... hiện toàn bộ
#Inverters #Capacitors #Power electronics #Circuit topology #Power system harmonics #Total harmonic distortion #Voltage control #Power semiconductor switches #Character generation #Power generation
Research of fault-current limiter for three-phase four-wire power system
Tập 2 - Trang 709-712 vol.2
A novel bridge-type fault-current limiter for three-phase four-wire power systems is put forward. The circuit model and its principle are discussed in detail. The control strategies for varying circuit-fault modes are analyzed. The limiter can restrain fault-current to a required level and realize system soft re-closing without impact. The theoretical prediction is validated by simulation and expe...... hiện toàn bộ
#Power system faults #Inductors #Circuit faults #Power system simulation #Power system modeling #Power system analysis computing #Fault currents #Bridge circuits #Thyristors #Power electronics
Bilinear discrete-time modeling for enhanced stability prediction and digital control design [of switching power converters]
Tập 2 - Trang 803-808 vol.2
This paper presents a new bilinear discrete-time modeling method for switching power converter circuits. The method utilizes a new approximation of the matrix exponential involved in the exact discrete-time models. Compared to the conventional bilinear discrete-time models or to the continuous-time averaged models, the new bilinear models provide a means for more reliable and accurate stability an...... hiện toàn bộ
#Predictive models #Stability #Digital control #Power system modeling #Switching converters #Control design #Matrix converters #Control systems #State feedback #Pulse width modulation converters
Development of multiple output operation based on single stage switched-capacitor resonant converters
Tập 3 - Trang 1325-1330 vol.3
Power converters are commonly based on the switched mode techniques which use pulse-width modulation to control the converters. Switching loss and switching noise restrict high frequency operation such as more than 200 kHz. The resonant converter is a solution of the above problem. The resonant converter enables switching devices to operate under zero-current or zero-voltage switching. The main di...... hiện toàn bộ
#Resonance #Switching converters #Pulse width modulation converters #Switched capacitor circuits #Circuit topology #Pulse modulation #Switching loss #Frequency #Zero voltage switching #Inductors
A new matrix integrated magnetics (MIM) structure for low voltage, high current DC-DC converters
Tập 3 - Trang 1230-1235 vol.3
A new matrix integrated magnetics (MIM) structure is proposed for low voltage, high current DC-DC converter applications. The proposed structure enables the design of low profile magnetics resulting in better core utilization, higher inductance per secondary winding and improved efficiency. The principal of operation of the MIM structure is explained as applicable to a half-bridge current doubler ...... hiện toàn bộ
#Matrix converters #Low voltage #DC-DC power converters #Magnetic cores #Inductance #Rectifiers #Topology #Interleaved codes #Inductors #Prototypes
Commutation torque ripple reduction in brushless DC motor drives using a single DC current sensor
Tập 2 - Trang 985-990 vol.2
This paper presents a comprehensive study result on reducing the commutation torque ripples generated in brushless DC motor drives with only a single DC-link current sensor provided in the inverter DC-link. In brushless DC motor drives equipped with only a single current sensor, it seems that commutation torque ripple suppression which is practically effective in low speed as well as high speed re...... hiện toàn bộ
#Commutation #Torque #Brushless DC motors #Equations #Current control #Intelligent sensors #Switches #Pulse width modulation inverters #Sensor systems #DC motors
On the comparison of fundamental and high frequency carrier-based PWM techniques for multilevel NPC inverters
Tập 2 - Trang 520-525 vol.2
Many different kinds of multicarrier sinusoidal pulse-width modulation (MSPWM) techniques have been used to control the multilevel neutral-point-clamped (NPC) inverter topology. These techniques are the natural extension of the conventional two-level SPWM method. In this paper, some of their characteristics are further explored. Since the switching losses are the most critical factor in selecting ...... hiện toàn bộ
#Pulse width modulation #Frequency #Pulse width modulation inverters #Switching loss #Power harmonic filters #Pulse width modulation converters #Power system harmonics #Performance loss #Voltage #Performance analysis