@article{oai:nagasaki-u.repo.nii.ac.jp:00014225,
 author = {東, 克彦 and 姫野, 隆 and 高橋, 賢一郎},
 issue = {26},
 journal = {長崎大学工学部研究報告, Reports of the Faculty of Engineering, Nagasaki University},
 month = {Jan},
 note = {We have some methods for the power factor impruvement which are compensating capacitors, higher harmonics filters, polyphase-multistep and ac-chopper PWM etc. Then the equipment in circulating circuit which spends or absorbes electric power is inserted and electric power aren't regnerated in case of the inductive load. Thus reactive power are decrease and the input power factor are improved very much. Namely the "method of forced circulating" are thought. On the paper, power factor and higher harmonics are analyzed and illustrated with an example of 3f power changers in case of the method of forced circulating. In futuer, GTO typed 3f power changers are intended to control by micro-computer and improve output waveform by a power filter., 長崎大学工学部研究報告, 16(26), pp.19-26; 1986},
 pages = {19--26},
 title = {強制循環方式による力率改善法（電力3f変換回路の力率解析とマイコン制御）},
 volume = {16},
 year = {1986}
}