| 发明名称 |
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| 摘要 |
PURPOSE:To improve readhesion performance by fixing the inverter frequency for idling or slippage thereby reducing torque of idling/slip shaft naturally. CONSTITUTION:DC power received from a stringing 21 through a pantograph 22 is fed to an inverter 24 in order to perform drive control of an induction motor 25 for thrusting an electric vehicle. A modulation rate setting section 30 produces a modulation rate based on a voltage detected through a voltage detector 29 and inverter frequency. An inverter frequency setting section 28 sets an inverter frequency finv based on a value fn detected through a rotary frequency detector 26 an a current command value for determining motor torque. A readhesion control section 100 normally outputs finv as it is but fixes the inverter frequency to an immediately proceeding value upon occurrence of idling or slippage. |
| 申请公布号 |
JP2549166(B2) |
申请公布日期 |
1996.10.30 |
| 申请号 |
JP19890000416 |
申请日期 |
1989.01.06 |
| 申请人 |
HITACHI SEISAKUSHO KK;TETSUDO SOGO GIJUTSU KENKYUSHO;HITACHI TEKUNO ENJINIARINGU KK |
发明人 |
KISHIMOTO KOJI;SUZUKI KAZUYA;KAWAZOE JUJI;URUGA KENICHI |
| 分类号 |
B60L9/18;(IPC1-7):B60L9/18 |
主分类号 |
B60L9/18 |
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