Systems, computer readable media storing instructions, and computing device-implemented methods include receiving one or more signals that represent an angular speed of a permanent magnet electric motor of a hybrid electric vehicle, receiving a signal representing a voltage from the electric motor, determining if the angular speed is within a predetermined threshold, calculating an error angle representing a correction factor for an alignment of the electric motor based on a ratio of the voltage and the angular speed, determining if the error angle indicates that the motor is installed in a correct or an incorrect orientation, and adding an orientation correction factor to the error angle.

A motor driving apparatus and a control method thereof, including a dc-link capacitor configured to store DC power, an inverter including a plurality of switching elements and converting the DC power stored in the dc-link capacitor into AC power to output the power to a motor, a dc-link resistor element disposed between the dc-link capacitor and the inverter; and a controller configured to control an operation of the inverter. The controller calculates a phase difference between a first reference voltage vector among a plurality of reference voltage vectors that are preset on the space vector and a voltage command, generates a switching frequency, determines a first operating point located in a dead band that is a one-phase current undetectable area in one switching cycle and a second operating point located at an outer position including a boundary of the dead band, and controls operation of the plurality of switching elements.

A motor driving apparatus and a control method thereof, including a dc-link capacitor configured to store DC power, an inverter including a plurality of switching elements and converting the DC power stored in the dc-link capacitor into AC power to output the power to a motor, a dc-link resistor element disposed between the dc-link capacitor and the inverter; and a controller configured to control an operation of the inverter. The controller calculates a phase difference between a first reference voltage vector among a plurality of reference voltage vectors that are preset on the space vector and a voltage command, generates a switching frequency, determines a first operating point located in a dead band that is a one-phase current undetectable area in one switching cycle and a second operating point located at an outer position including a boundary of the dead band, and controls operation of the plurality of switching elements.

Systems, computer readable media storing instructions, and computing device-implemented methods include receiving one or more signals that represent an angular speed of a permanent magnet electric motor of a hybrid electric vehicle, receiving a signal representing a voltage from the electric motor, determining if the angular speed is within a predetermined threshold, calculating an error angle representing a correction factor for an alignment of the electric motor based on a ratio of the voltage and the angular speed, determining if the error angle indicates that the motor is installed in a correct or an incorrect orientation, and adding an orientation correction factor to the error angle.

Systems, computer readable media storing instructions, and computing device-implemented methods include receiving one or more signals that represent an angular speed of a permanent magnet electric motor of a hybrid electric vehicle, receiving a signal representing a voltage from the electric motor, determining if the angular speed is within a predetermined threshold, calculating an error angle representing a correction factor for an alignment of the electric motor based on a ratio of the voltage and the angular speed, determining if the error angle indicates that the motor is installed in a correct or an incorrect orientation, and adding an orientation correction factor to the error angle.

A method for operating a brushless and sensorless multi-phase electric motor. At least two phase voltages and at least two phase currents of the electric motor are determined. A voltage vector is determined from the phase voltages and/or a current vector is determined from the phase currents. A position substitute signal is determined as a measure of a rotor position on the basis of an angle of the current vector and/or of the voltage vector. A rotation value is calculated on the basis of the position substitute signals, and the electric motor is controlled by open-loop and/or closed-loop technology on a basis of the rotation value.

A method for operating a brushless and sensorless multi-phase electric motor. At least two phase voltages and at least two phase currents of the electric motor are determined. A voltage vector is determined from the phase voltages and/or a current vector is determined from the phase currents. A position substitute signal is determined as a measure of a rotor position on the basis of an angle of the current vector and/or of the voltage vector. A rotation value is calculated on the basis of the position substitute signals, and the electric motor is controlled by open-loop and/or closed-loop technology on a basis of the rotation value.

A motor flux weakening control method with data map creation is provided. The method estimates a phase angle between a dq electric current vector and a d-axis based on a speed of the motor; estimates an input direct current; repeats the estimating of the phase angle and the direct current while decreasing a magnitude of the dq electric current vector based on a difference between the estimated direct current and a preset direct current limitation value; and interrupts the repeating of the estimating of the phase angle and the estimating of the direct current when the direct current and the preset direct current limitation value are equal, and stores a relationship between the speed of the motor, the direct current voltage, the phase angle, and the magnitude of the dq electric current vector, when the estimated direct current and the preset direct current limitation value are equal.

A motor flux weakening control method with data map creation is provided. The method estimates a phase angle between a dq electric current vector and a d-axis based on a speed of the motor; estimates an input direct current; repeats the estimating of the phase angle and the direct current while decreasing a magnitude of the dq electric current vector based on a difference between the estimated direct current and a preset direct current limitation value; and interrupts the repeating of the estimating of the phase angle and the estimating of the direct current when the direct current and the preset direct current limitation value are equal, and stores a relationship between the speed of the motor, the direct current voltage, the phase angle, and the magnitude of the dq electric current vector, when the estimated direct current and the preset direct current limitation value are equal.

A system may include an inverter configured to convert a direct current (DC) voltage to an alternating current (AC) voltage. The system may also include a control system communicatively coupled to the inverter. The control system may receive a torque current feedback from a motor and may generate, based on the torque current feedback, a command torque current and a command flux current. The control system may generate, based on the command torque current and the command flux current, a command torque voltage and a command flux voltage and may generate, based on a slip frequency and a rotor frequency, a command frequency. The control system may determine one or more operating parameters for the inverter based on the command frequency, the command torque voltage, and the command flux voltage and may control the inverter based on the one or more operating parameters.