Vehicle systems and related motor control methods

A non-transitory computer-readable medium having computer-executable instructions stored thereon that, when executed by a processing system, cause the processing system to:

• operate a power conversion arrangement coupled to a motor to apply an initial set of one or more voltage signals to a respective phase of the motor at a first time corresponding to a start of a first electrical cycle;
• determine a time period associated with the first electrical cycle based on one or more electrical characteristics associated with the respective phase of the motor during the first electrical cycle;
• calculate an excitation offset based at least in part on the time period associated with the first electrical cycle;
• and
• thereafter operate the power conversion arrangement to apply a subsequent set of one or more voltage signals to the respective phase of the motor at a third time within a subsequent electrical cycle corresponding to the excitation offset after a second time corresponding to a start of the subsequent electrical cycle, wherein a difference between the third time and the second time is influenced by the excitation offset.

A system comprising:

• a power conversion arrangement comprising a plurality of phase legs, wherein each phase leg of the plurality of phase legs is coupled between a first reference voltage node and a second reference voltage node;
• a motor comprising a plurality of windings, wherein each winding of the plurality of windings is coupled between a respective output node of a respective phase leg of the plurality of phase legs and a third node;
• a sensing arrangement coupled to the motor to provide measurement data indicative of an electrical characteristic associated with a respective phase of the motor;
• and
• a control module coupled to the sensing arrangement and the power conversion arrangement to:
• operate the power conversion arrangement to apply an initial set of one or more voltage signals to the respective phase of the motor at a first time corresponding to a start of a first electrical cycle;
• determine a time period associated with the first electrical cycle based on the measurement data indicative of the electrical characteristic associated with the respective phase of the motor during the first electrical cycle;
• calculate an excitation offset based at least in part on the time period associated with the first electrical cycle;
• and
• thereafter operate the power conversion arrangement to apply a subsequent set of one or more voltage signals to the respective phase of the motor at a third time within a subsequent electrical cycle corresponding to the excitation offset after a second time corresponding to a start of the subsequent electrical cycle, wherein a difference between the third time and the second time is influenced by the excitation offset.