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US 11,695,365 B2Granted
Method and device for external monitoring of a converter
AssigneeRobert Bosch GmbH
InventorJohannes Schild
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AssigneeRobert Bosch GmbH
InventorJohannes Schild
Estimating the term…
The invention relates to a method for the external monitoring of a converter (10), the converter (10) being controlled by means of a first electronic control system (12) and the method being implemented by means of a second electronic control system (14) which is independent from the first electronic control system (12). Said method comprises detection (S1) of a current (I) received by the converter (10) and a voltage (U) received by the converter (10) by means of a current/voltage sensor device (16) which is independent from the first electronic control system (12). The invention also relates to a device for monitoring a converter (10), to a computer program product, to a machine-readable storage medium, to a drive train of a motor vehicle, and to a corresponding motor vehicle.
A method for externally monitoring a converter (10), wherein the converter (10) is actuated by first control electronics (12) and the method is carried out by second control electronics (14) separate from the first control electronics, the method having the steps of:
An apparatus for monitoring a converter (10), wherein the converter (10) is actuated by first control electronics (12), wherein the apparatus comprises second control electronics (14) configured to use a current/voltage sensor device (16), which is separate from the first control electronics (12), to detect a current (I) received by the converter (10) and a voltage (U) received by the converter (10), to ascertain an actual output power (P1) provided by the converter (10) using the detected current (I) received by the converter (10) and the detected voltage (U) received by the converter (10), to determine a difference between the ascertained actual output power (P1) provided by the converter (10) and a setpoint output power (P2) of the converter (10), and to actuate, by the first control electronics (12), the converter (10) if an absolute value of a difference between the actual output power (P1) provided by the converter (10) and the setpoint output power (P2) of the converter (10) exceeds a predetermined limit value, wherein actuating of the converter (10) includes the specifying of a control requirement for the first control electronics (12), wherein actuating of the converter (10) includes a switching-off of the converter (10) if the specified control requirement is implemented erroneously and the switching-off of the converter (10) is performed within an error reaction time of the converter (10), wherein the apparatus has third control electronics (20) including an ESP control unit, a gearbox control unit or a further converter, that are separate from the first control electronics (12) and configured to ascertain a speed (D) of an electric machine (22) operated by the converter (10), wherein the second control electronics (14) calculates the setpoint output power (P2) of the converter (10) based on the speed (D) of the electric machine (22), and wherein the current/voltage sensor device (16) is integrated in a traction battery (18) of an electric or hybrid vehicle.
Dependencies are inferred from the claim text.