Results 31 to 40 of about 146,224 (205)
Journal of Measurement Science and Instrumentation, 2022 In predictive direct power control (PDPC) system of three-phase pulse width modulation (PWM) rectifier, grid voltage sensor makes the whole system more complex and costly.
ZHAO Feng +6 more
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Unity-Power-Factor PWM Rectifier With DC Ripple Compensation.
IEEJ Transactions on Industry Applications, 1994 This paper presents a new topology of PWM rectifier which can achieve unity-power-factor on the AC supply side and ripple-reduction on the DC output side. The main circuit of this rectifier is accomplished by adding only a pair of switches to a conventional PWM rectifier.
T. Shimizu +3 more
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Single-Phase Pulse Width Modulated Rectifier
Acta Polytechnica, 2008 The PWM rectifier is a very popular topic nowadays. With the expansion of electronics, conversion of electric parameters is also needed. For this purpose the side effects of passive rectifiers, e.g.
J. Bauer
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Energies, 2018 In this paper; the impedance model of PWM rectifier and LLC resonant converter are deduced, and the stability analysis of cascade system is studied. The principle of three-phase PWM rectifier is introduced; and the small signal model in d-q coordinate ...
Rutian Wang +5 more
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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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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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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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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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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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Research of Rectification Technology of Electric Locomotive under Unbalanced Three-phase Voltage
Gong-kuang zidonghua, 2012 In view of problem of negative sequence current component in AC side of traditional PWM rectifier because of unbalanced three-phase voltage existed in converter system of underground DC electric locomotive, the paper proposed a control strategy of ...
LV Kang-fei, SHI Chao-yue
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