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Comparative Studies | Electrical Engineering | India | Volume 8 Issue 4, April 2019 | Popularity: 6.3 / 10
Simulation of Digital Current Sensorless Control for Dual-Boost Half-Bridge PFC Converter
Ragupathi.S
Abstract: To enhance the efficiency of the traditional enhance-kind power factor correction (PFC) converters with the diode bridge circuit, the PFC converters of bridgeless category are frequently used. Due to no series-related switches and no short-circuit dangers, the dual-boost half-bridge (DBHB) circuit is used because the PFC converter on this paper. This converter is able to working beneath variable PF. However, the focus of this paper is in reaching team spirit PF operation best. The efficiency of this circuit is excessive due to the fact there is simplest one series semiconductor on-state voltage drop at any on the spot. The presence of an imbalance within the voltages of the two DC-hyperlink capacitors, which changed into mentioned earlier than, is showed here. The purpose for the imbalance is analyzed the usage of suitable models, and a manage technique to take away it's far mentioned in element. In order to simplify the traditional -loop manipulate scheme and decrease the variety of sensors, the behaviours of DBHB PFC converter are studied and its equivalent unmarried-switch version is developed. Then, the current sensor less manipulate for DBHB PFC converter is proposed to achieve voltage law and yield sinusoidal enter contemporary in segment with the enter voltage without sensing any current. In addition, the proposed approach is capable of balance capacitor voltages certainly without including any voltage balancing control loop. An 800W DBHB PFC circuit is designed to assess the control performance and its simulation consequences are provided to illustrate the proposed present day sensor less control approach.
Keywords: Power Factor Correction PFC, Dual-Boost Half-Bridge DBHB
Edition: Volume 8 Issue 4, April 2019
Pages: 1231 - 1237
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