Title :
A novel approach to minimize line-current harmonics in interfacing renewable energy sources with 3-phase utility systems
Author_Institution :
Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
An approach to interfacing renewable energy sources such as photovoltaic, wind-electric, and small hydroplants with three-phase utility systems is presented. By modulating the DC-link currents and then reinjecting the modulating currents on the AC side, distortion in the line currents can be reduced to be within the allowable limits. Other advantages include the capability to provide electrical isolation by means of high-frequency transformers and the potential for an overall low cost. With the presently available semiconductor switches such as insulated-gate bipolar transistors (IGBTs) and gate turn-off thyristors (GTOs), this approach can be used in a very wide range of voltage and power ratings in interfacing nearly all power electronics equipment to three-phase utility systems
Keywords :
power electronics; power system harmonics; 3-phase utility systems; DC-link currents; GTOs; HF transformers; IGBTs; gate turn-off thyristors; hydroelectric power plants; insulated-gate bipolar transistors; line-current harmonics; photovoltaic power systems; power ratings; renewable energy sources; wind power; Costs; Insulated gate bipolar transistors; Photovoltaic systems; Power electronics; Power semiconductor switches; Power transformer insulation; Renewable energy resources; Solar power generation; Thyristors; Voltage transformers;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1992. APEC '92. Conference Proceedings 1992., Seventh Annual
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-0485-3
DOI :
10.1109/APEC.1992.228325
