System and method for engine control

    公开(公告)号:US10801425B2

    公开(公告)日:2020-10-13

    申请号:US16139462

    申请日:2018-09-24

    Inventor: Henry Todd Young

    Abstract: A method includes reducing automatically a speed of an engine from a first speed value to a second speed value in response to both the first speed value being at or above a first speed threshold value and a rate of change of one or both of (i) engine power and (ii) the engine speed is substantially zero for a designated period.

    SYSTEMS AND METHODS FOR CONTROLLING DYNAMIC AVALANCHE IN SWITCHING DEVICES

    公开(公告)号:US20200162073A1

    公开(公告)日:2020-05-21

    申请号:US16193926

    申请日:2018-11-16

    Abstract: Systems and methods for mitigating occurrences of dynamic avalanche events are presented. An electrical system may include a gate-drive unit electrically coupled to a semiconductor switching device and used to drive the switching device by applying a voltage to a gate terminal of the switching device. The electrical system may also include a controller that indicates the switching device to turn off and determines system parameters in response to the switching device turning-off. The controller may determine an intermediate gate voltage based at least in part on the system parameters and may modify the gate-drive unit configuration to apply the appropriate intermediate gate voltage to the gate terminal. The controller may additionally modify the gate-drive unit configuration to apply a turn-off voltage at the gate terminal subsequent to the application of the intermediate gate voltage.

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