{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390282680119197824.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.11526/ieejjournal1888.43.300"}},{"identifier":{"@type":"NAID","@value":"130003612950"}}],"dc:title":[{"@language":"en","@value":"Commutation in D. C. Machines"},{"@value":"直流機の整流作用"}],"description":[{"type":"abstract","notation":[{"@language":"en","@value":"In modern practice the majority of d c. machines have commutating pules by which t'e indnced e.m.f s. in armature coils undergoing commutation are compensated. Since, however, the compensating action in only done in the mean value some e m.f.s. may still remain uneompensated, the values of which being sometimes as high as nearly equal to the mean inducel e.m.f s. compensated and unsatisfaetery commutation will result.<br>Thus the uncompensated e.m.f.s must be paid carefull attension for rather than the mean value of the induced e.m.f. or the so-called. \"reactance voltage.\" Since this uncompensated e.m.f. is due to the pulsation of the induced e.m.f. and the compensating e.m.f. it is an alternating e.m f. consisting of e.m.f. of tooth frequency and that corresponding nearly with period of commutation. Study of this problem needs carefull analyzation of phenomena. This has been done in this paper to a certain extent though much would yet be remaind for prae tical application."},{"@value":"近時直流機は極く小容量のものを除いては大抵補極を有し整流中の電機子捲線中に其の誘導電壓(コイル、インダクタンスに基ける)を打消すべき起電力を生ぜしめて整流を助けて居る。此の誘導電壓即ち所謂リアクタンス、ヴホルテージ及び補極によりて生ぜらるゝ起電力は何れも一種の脈動電壓であるから、補極の作用は唯誘導電壓を其の平均値に於て打消すに過ぎず、從て一種の交番電壓が打消されずに殘り、之が相當に大なる値を有する時は整流不良の原因となる。此の交番電壓に應々リアクタンス、ヴオルテージに近き値を取ることがある。<br>リアクタンス、ヴオルテージを正確に計算し補極の強さを正確に設計することは頗る困難であるが若し機械完成の上で補極の強さに過不足ある塲合には空隙の調整其他の方法で修正し得らるゝから、リアグタンス、ヴオルテージの大小は整流の難易には直接影響なくして前記の補極によりて除き得ざる交番電壓によりて難易が定まる。<br>此論文は圭として此問題に就て解析的に研究し、結論としてスロツトの設計、捲線方式空隙の大さ等の選定の重要なろことウエープ、ウインデイングの有利なることデュープレツクス、ワインデイングの避くべきこと等を述べて居る。"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410009221925752576","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000253406653"}],"foaf:name":[{"@language":"en","@value":"TERADA M."},{"@language":"ja","@value":"寺田 益穗"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00202878"},{"@type":"EISSN","@value":"21876797"}],"prism:publicationName":[{"@language":"en","@value":"The Journal of the Institute of Electrical Engineers of Japan"},{"@language":"ja","@value":"電氣學會雜誌"},{"@language":"en","@value":"IEEJ Journal."},{"@language":"ja","@value":"電氣學會雜誌"}],"dc:publisher":[{"@language":"en","@value":"The Institute of Electrical Engineers of Japan"},{"@language":"ja","@value":"一般社団法人 電気学会"}],"prism:publicationDate":"1923","prism:volume":"43","prism:number":"417","prism:startingPage":"300","prism:endingPage":"323"},"availableAt":"1923","dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:1001298493"},{"@type":"CIA","@value":"130003612950"}]}