A New Method of Power Arithmetic for Parallel Inverter

作者：Wang Hongliang^*; Xie Yinyin; Pei Xuejun; Kang Yong; Yue Xiumei

来源：Elektronika ir Elektrotechnika, 2010, (10): 3-8.

Hongliang Wang, Yinyin Xie, Xuejun Pei, Yong Kang, Xiumei Yue. A New Method of Power Arithmetic for Parallel Inverter // Electronics and Electrical Engineering. - Kaunas: Technologija, 2010.- No. 10(106). - P. 3-8.
To overcome the one fundamental cycle delay of the conventional power arithmetic under the load change, a new method of power arithmetic is proposed, which rebuilds the sinusoidal signal only using the last-value and next value of signal in discrete domain. Thus, it is able to fast calculate power value and can obtain the true power value only in one sampling cycle. Moreover, it occupies much smaller DSP space and cuts down computing process, as the sine and cosine tables are cancelled. The high precision of proposed method has validated through comparison with the ideal and simulation values of active, reactive power. Experimental results from a two-75-kVA-inverters system show the proposed method is practicable. III. 12, bibl. 11, tabl. 1 (in English; abstracts in English and Lithuanian).

• 出版日期2010
• 单位湖北理工学院; 华中科技大学