Method for controlling a multi-phase electric machine by way of space vector modulation, control device, and drive arrangement
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorDaniel Glose
Life of this patent
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Abstract
A method is provided for controlling a multi-phase electric machine, wherein a stator of the electric machine includes a first sub-system and a second sub-system having the same number of phases and separate star points. The method includes controlling an inverter device by way of space vector modulation in order to generate output voltages for each of the phases, and outputting the output voltages as pulse sequences, wherein each of the pulse sequences in the second sub-system is output inverted with respect to respective pulse sequence in the first sub-system.
Claims9
A method for controlling a multi-phase electric machine, wherein a stator of the electric machine has a first subsystem and a second subsystem with a same number of phases and separate star points, the method comprising:
- in order to generate output voltages for the respective phases, controlling an inverter apparatus by way of space vector modulation, and
- outputting the output voltages as pulse sequences, wherein:
- the pulse sequences in the second subsystem are output in an inverted manner with respect to respective pulse sequences in the first subsystem, and
- a positive intermediate circuit voltage and a negative intermediate circuit voltage are output in the respective pulse sequences in the first subsystem.
A control device for controlling an inverter apparatus for an electric machine, wherein stator of the electric machine has a first subsystem and a second subsystem with a same number of phases and separate star points, and the control device is configured to carry out a method comprising:
- in order to generate output voltages for the respective phases, controlling an inverter apparatus by way of space vector modulation, and
- outputting the output voltages as pulse sequences, wherein:
- the pulse sequences in the second subsystem are output in an inverted manner with respect to respective pulse sequences in the first subsystem, and
- a positive intermediate circuit voltage and a negative intermediate circuit voltage are output in the respective pulse sequences in the first subsystem.
A computer product for controlling a multi-phase electric machine, wherein a stator of the electric machine has a first subsystem and a second subsystem with a same number of phases and separate star points, the computer product comprising a non-transitory computer readable medium having stored thereon program instructions which, when executed on a processor, carries out the acts of:
- in order to generate output voltages for the respective phases, controlling an inverter apparatus by way of space vector modulation, and
- outputting the output voltages as pulse sequences, wherein:
- the pulse sequences in the second subsystem are output in an inverted manner with respect to respective pulse sequences in the first subsystem, and
- a positive intermediate circuit voltage and a negative intermediate circuit voltage are output in the respective pulse sequences in the first subsystem.
Dependencies are inferred from the claim text.