Method and device for controlling an alternator-starter of a motor vehicle, and corresponding alternator-starter
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United States of America Patent
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Jan 23, 2018
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app pub date -
Jul 29, 2014
filing date -
Aug 1, 2013
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Abstract
The method according to the invention is implemented in an alternator-starter (1) comprising phase windings (u,v,w) connected to an inverter (3) linked to an onboard electrical network (2) powered by a battery for operation as a starter. The invention involves controlling the inverter in a chopped full-wave control mode when the rotational speed (Ω) of the alternator-starter is lower than at least a threshold speed and in a full-wave control mode when the rotational speed is higher than the threshold speed. According to a specific embodiment, the switching between the chopped full-wave control mode and the full-wave control mode takes place according to a hysteresis cycle using two predefined threshold speeds.
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