专利名称：Control apparatus for induction motor and
electric rolling stock
发明人：Kazuyoshi Kotake,Takeshi Kawazoe,Tadashi
Takaoka
申请号：US07/686372申请日：19910417公开号：US05248926A公开日：19930928
摘要：A control apparatus for an electric rolling stock makes it possible to use asingle associated train in a variety of transit services including an express transit service toan accommodation train service. The apparatus comprises an induction motor controlledby an inverter. For an express transit operation (over a long inter-station distance), theratio of output voltage and the frequency of the inverter is decreased to therebyincrease a command current in a variable voltage/variable frequency region. For theaccommodation train operation (over short inter- station distance), a control patternreverse to the above is adopted. The electric rolling stock can adapt itself to the runningconditions. Besides, the problem of overheating of the induction motor can be solvedsuccessfuly.
申请人：HITACHI, LTD.
代理机构：Antonelli, Terry, Stout & Kraus
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