Work

Performance analysis of 1ϕ T/4 PLLs with secondary control path in current sensorless bridgeless PFCs

Year: 2016

Type: conference-paper

Abstract: New power factor correction (PFC) stages such as bridgeless converters and the associated current shaping techniques require grid synchronization to ensure unity Displacement Power Factor (DPF). Sensorless line current rebuilding algorithms also need synchronization with the line voltage to compensate at least for part of the current estimation error. The application of a secondary control path to reach faster and more robustly the proper operation point previously applied in single/three-phase PLLs in grid connected converters is here proposed for the current sensorless bridgeless PFCs. This work analyzes the performance of three single-phase T/4 PLL structures, first without secondary control path, and later with feedforward and feedback secondary control paths, both in simulation and experimentally, and evaluates their applicability to current sensorless digitally controlled single phase bridgeless PFCs based on the current rebuilding technique.

Source: IEEE ... Workshop on Control and Modeling for Power Electronics

DOI: 10.1109/compel.2016.7556657

Authors: P. Lamo, F. Lopez, A. Pigazo, F. J. Azcondo

Institution: Universidad de Cantabria

Language: English

Topic: Advanced DC-DC Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: green

Funder: Ministerio de Economía y Competitividad