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US 2018/0019692 A1Published application
Method and device for detecting a control method of an inverter
AssigneeRobert Bosch GmbH
InventorSevan Tatiyosyan
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AssigneeRobert Bosch GmbH
InventorSevan Tatiyosyan
Estimating the term…
The invention relates to a method for detecting a control method of an inverter (11) for supplying current to an electric machine (1), in particular a synchronous machine, having N phases. The method comprises sensing a control signal (CU, DU, CV, DV, CW, DW), which is fed to the inverter and which is clocked with a periodic cycle, over a specified number of periodic cycles of the control signal; determining a duty cycle frequency for the sensed control signal over the specified number of periodic cycles; and detecting the control method on the basis of the determined duty cycle frequency. The invention further relates to a device (5) designed to perform the method. In addition, the invention further relates a use of the method or of the device to monitor a torque of the electric machine and in particular to estimate an operating-point-dependent power loss of the electric machine according to the detected control method.
A method for detecting a control method of an inverter (11) for supplying current to an electric machine (1) having N phases, comprising:
A device (5) for detecting a control method of an inverter (11) for supplying current to an electric machine (1)having N phases, wherein the device is designed to sense a control signal (CU, DU, CV, DV, CW, DW), which is fed to the inverter and which is clocked with a periodic cycle, over a specified number of periodic cycles of the control signal, for determining a duty cycle frequency for the sensed control signal over the specified number of periodic cycles and for detecting the control method on the basis of the determined duty cycle frequency.
An electric machine having N phases and comprising:
Dependencies are inferred from the claim text.