Title :
New current feed back control method for solar energy inverter using digital signal processor
Author :
Takebayashi, Tsukasa ; Nakata, Hirofumi ; Eguchi, Masaki ; Kodama, Hirokazu
Author_Institution :
Solar Energy Syst. Group, Sharp Corp., Nara, Japan
Abstract :
A solar energy inverter for photovoltaic power systems connected to electric utility lines has been developed. It is a power conditioner with a high-frequency transformer link for residential use at a power level of 3 kW. This paper describes a new synchronous current feedback control method using a digital signal processor (DSP). An adaptive finite impulse response filter is introduced into the control scheme. This paper also suggests a new method for detecting power outages. It gives frequent changes to the frequency of the inverter output voltage using a distortion of the inverter output current
Keywords :
DC-AC power convertors; FIR filters; adaptive filters; control system synthesis; electric current control; feedback; high-frequency transformers; invertors; photovoltaic power systems; power filters; power system control; power system interconnection; power transformers; 3 kW; PV power system invertor; adaptive finite impulse response filter; control design; control performance; digital signal processor; electric utility lines; high-frequency transformer link; output current distortion; power conditioner; power outage detection; synchronous current feedback control method; Adaptive control; Digital signal processing; Digital signal processors; Feedback control; Feeds; Inverters; Photovoltaic systems; Power industry; Programmable control; Solar energy;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.638280
