scholarly journals Two-sample PLL with improved frequency response applied to single-phase current sensorless bridgeless PFCs

2017 ◽  
Author(s):  
Paula Lamo ◽  
Felipe Lopez ◽  
Alberto Pigazo ◽  
Francisco J. Azcondo
Keyword(s):  
Frequency Response ◽  
Single Phase ◽  
Phase Current ◽  
Current Sensorless

VVCF Single-phase Current Source Converter using Single Bridge

2012 ◽  
Vol 132 (3) ◽  
pp. 452-453
Author(s):  
Yasuhiko Neba ◽  
Hirokazu Matsumoto ◽  
Ryozo Itoh ◽  
Kouichi Ishizaka ◽  
Koichiro Hashimoto ◽  
...  
Keyword(s):  
Single Phase ◽  
Current Source ◽  
Phase Current ◽  
Current Source Converter

scholarly journals DC Offset Error Compensation Algorithm for PR Current Control of a Single-Phase Grid-Tied Inverter

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2308 ◽  
Author(s):  
Jae Lee ◽  
Seon-Hwan Hwang
Keyword(s):  
Fundamental Frequency ◽  
Error Compensation ◽  
Single Phase ◽  
Detection Method ◽  
Current Control ◽  
Dc Offset ◽  
Phase Current ◽  
Compensation Algorithm ◽  
Dc Component ◽  
Offset Error

In a single-phase grid-tied inverter, the direct current (DC) offset error included in the measured grid side phase current has various causes, such as a non-ideal current sensor, unbalanced power supply of an operational amplifier, and nonlinear features of analog components in interface circuits, etc. If the DC offset error is included in the measured current, it causes the secondary harmonic of fundamental frequency and the DC component in grid phase current which result in degradation of inverter performance. In this paper, a theoretical detection method of the secondary harmonic of the fundamental frequency and a DC component in grid phase current for a proportional-resonant (PR) current control system is introduced. Based on the detection method, an algorithm for compensating DC offset error is also presented for single-phase grid-tied inverters. Simulation results and experimental verification of the DC offset error compensation algorithm are shown in this paper.

Sign in / Sign up

Export Citation Format

Share Document