3) uncontrolled rectifier 不可控整流桥 1. The input current of three-phase uncontrolled rectifier has a large range of high-frequency harmonic components. 三相不可控整流桥装置产生的电流谐波具有谐波含量大,谐波频谱分布宽的特点。4) six-pulse bridge converter 三相全控整流桥 1. This paper ...
The utility model discloses a big-power three-phase active power correction circuit, which comprises a three-phase uncontrolled rectifier bridge which comprises totally six VD devices from VD1 to VD 6, the input end of the three-phase uncontrolled rectifier bridge is respectively connected to AC ...
A practical method is proposed for calculating the harmonic currents of a three-phase bridge uncontrolled rectifier with a DC filter, taking into account the AC source reactance. The method is based on the frequency-domain method and the rectifier switching functions. Analytical equations for the ha...
preferable when large power is involved. The controlled rectifier can provide controllable out put dc voltage in a single unit instead of a three phase autotransformer and a diode bridge rectifier. The controlled rectifier is obtained by replacing the diodes of the uncontrolled rectifier ...
The reference harmonic components are extracted from the sensed nonlinear load currents by applying the Synchronous Reference Frame (SRF) theory, where a three-phase thyristor bridge rectifier with R-L load is taken as the nonlinear load. The switching control algorithms of the proposed SVPWM would...
The first nonlinear load is constructed using a three-phase uncontrolled bridge rectifier feeding 20 Ω resistor and 2200 µF capacitor connected in parallel (capacitive). The second nonlinear load is developed using similar rectifier feeding a series Energies 2016, 9, 533 10 of 25 connected ...
The Swiss converter is composed of three primary stages: an active three-phase bridge, a third harmonic injection network, and two buck DC-DC converters. The three-phase bridge functions as an uncontrolled rectifier bridge, driven to operate in a typical manner. The third harmonic injection netwo...
The full-converter is a three phase bridge rectifier, AC to DC, controlled power conversion system having six controlled rectifiers. The half-controlled converter contains three controlled rectifiers in combination with three uncontrolled rectifiers. The system control sampling rate for the full-converter...
The bridge rectifier network is formed of three thyristors (V1,V3,V5) controllable from an electronic pulse generator (7), and three uncontrolled diodes (V2,V4,V6). On the DC side the intermediate circuit (DC link) has a capacitor (10) between positive and negative poles (8,9), charged...
Transformer-three-phase current switch unit includes three-circuit transformer. Its two parallel cophased windings are made with neutral terminals between which groups of controlled and uncontrolled semiconductor rectifiers are incorporated. One of the points of amplifier connection is grounded.;EFFECT: ...