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PWM control signal for charging voltage generated by vehicle alternator Disclosure Number: IPCOM000031121D
Publication Date: 2004-Sep-13

Publishing Venue

The Prior Art Database

Related Documents

Patent/Patent Application:
US6404163B1 US5719485A EP1126575A2 WO03107020


The invention relates to a method and a system for adjusting the charging voltage generated by an alternator for a vehicle battery unit or supercapacitor. By measuring different parameters, such as State of Charge, it is possible to determine the optimal charging voltage for the battery unit. A control unit for the alternator then sends a controlling pulse width modulation (PWM) signal to the alternator. The PWM-signal both controls the on/off regulation and requests the determined optimal charging voltage.