Results 61 to 70 of about 156,626 (252)
Harmonic Characteristics of Variable Frequency System Based on PWM Rectifier
Kongzhi Yu Xinxi Jishu, 2017 In order to solve the problem of harmonic harm of PWM rectifier variable frequency system in power transmission and distribution system, it introduced the basic principle of PWM rectifier control and SPWM modulation according to the main circuit topology
MING Kaiyun
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Energies, 2019 This paper proposes a fault diagnosis and tolerant control methods for an open-switch fault caused in a three-phase three-level neutral-point-clamped (NPC) pulse-width modulation (PWM) active rectifier. The open-switch fault in the three-level NPC active
Jun-Hyung Jung +3 more
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A back to back multilevel converter for driving low inductance brushless AC machines [PDF]
, 2007 Traditionally, multilevel converters are utilised in medium voltage applications, allowing the DC-link voltage to exceed the switch maximum blocking voltage.
Bingham, Chris +3 more
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The Advanced Technologies of Three-phase Three-level PWM Rectifier
Kongzhi Yu Xinxi Jishu, 2011 For the advantages of constant DC output voltage, lower power devices voltage stress, better AC sinusoidal current waveform and per unit power factor, three-phase three-level PWM rectifier has been widely used in many fields, such as medium-high AC motor
伍文俊, 钟彦儒
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Control and analysis of a unified power flow controller [PDF]
, 1999 This paper presents a control scheme and comprehensive analysis for a unified power flow controller (UPFC) on the basis of theory, computer simulation and experiment.
Akagi, Hirofumi +2 more
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Gong-kuang zidonghua, 2010 The paper introduced a mathematical model of three-phase PWM rectifier, analyzed principle of fixed switching frequency control strategy,built control structure of PWM rectifier based on inner current loop and outer voltage loop the simulated the fixed ...
WANG Xian-bo +3 more
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Using transfer ratio to evaluate EMC design of adjustable speed drive systems [PDF]
, 2006 This paper proposes a way to evaluate the conducted electromagnetic compatibility performance of variable speed drive systems. It is considered that the measured noise level is determined by two factors, the level of the noise source and the conversion ...
Ferreira, B. +4 more
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Research of Zero Sequence Current of Parallel System of PWM Rectifier
Gong-kuang zidonghua, 2012 Taking two-level parallel system of PWM rectifier as example, the paper analyzed cause of zero sequence circulation in parallel module: the circulation is generated by difference of duty cycle of zero sequence current of two modules; generation of the ...
NI Shuai +3 more
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MATEC Web of Conferences, 2015 This paper proposes a regulation method of back-to-back connected two-level PWM rectifier-five-level Voltage Source Inverter (VSI) in order to reduce the torque ripple in induction motor.
Abdelkrim Thameur +2 more
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A comparative study of methods for estimating virtual flux at the point of common coupling in grid connected voltage source converters with LCL filter [PDF]
, 2016 Grid connected Voltage Source Converters (VSCs) with LCL filters usually have voltage measurements at the filter capacitors, while it can be important to control the active or reactive power injection at the grid-side of the LCL filter, for instance at a
Candela García, José Ignacio +5 more
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