Electricity: motive power systems – Battery-fed motor systems
Patent
1997-04-25
1999-03-02
Wysocki, Jonathan
Electricity: motive power systems
Battery-fed motor systems
318801, 318376, H02P 300
Patent
active
058776010
ABSTRACT:
In an electric vehicle having a synchronous motor as the driving source, a control system and a control method for the electric vehicle can prevent over current in the main circuit or over charging of the battery at the re-closing of an opened inverter relay and is always capable of operating the power-train system in a better condition. A control method for an electric vehicle having an inverter for supplying a direct current electric power from a battery to the synchronous motor, a smoothing capacitor, connected to the inverter in parallel for smoothing the direct current electric power, an inverter control circuit and an inverter relay for connecting and disconnecting the inverter and the smoothing capacitor to and from the battery. The inverter is controlled so as to prevent current from flowing into or flowing out of the inverter until the re-closing operation of the inverter relay is completed when the opened inverter relay is re-closed.
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Katada Hiroshi
Masaki Ryoso
Matsudaira Nobunori
Obara Sanshiro
Ohtsu Eiichi
Hitachi , Ltd.
Wysocki Jonathan
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