Title: Current source type photovoltiac parallel-in system and its control device and method
Application Number: 200610118155 Application Date: 2006.11.09
Publication Number: 1988310 Publication Date: 2007.06.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02J3/38;H02J7/35
Applicant(s) Name: Shanghai Univ. Address:
Inventor(s) Name: Wu Chunhua;Chen Guocheng;Sun Chengbo;Zhou Qinli
Attorney & Agent: hewen xin
Abstract:
    This invention relates to a current-source photovoltaic merging system, its control device and a method, in which, the system utilizes a single-chip processor to generate HF pulse signal based on triangle carrier wave and triangle modulation wave to be driven by HF driving circuit then to drive a HF inverter and generates power frequency pulse signals based on the zero-cross signal to drive the power frequency inverter via the power frequency drive circuit to invert the DC voltage of a photovoltaic cell array to HF voltage and input into an adpedance converter, the HF current output by the converter is isolated by a HF transformer, switched in current grade, rectified by a HF rectifier and inverted by a power inverter to be filtered by a low pass filter to merge into a signle-phase net.
Time: 11