Abstract: Systems and methods for operating an electric drive system for an electric or hybrid vehicle is described. In one example, the drive system is operated by suppling a pulsed torque current command while supplying a zero flux current command. The torque current command and the flux current command make up winding current commands for an electric machine.

Abstract: An electrically-driven gyroscope having a housing capable of alternate rotation and a control method thereof, which relate to the field of electrically-driven gyroscopes. The electrically-driven gyroscope includes a rotating housing, an internal rotator, a drive motor composed of an electrical stator part and a rotating part, a drive circuit, and a battery. The internal rotator is mechanically connected to the rotating part of the drive motor, and they can coaxially rotate. The electrical stator part of the motor, the drive circuit, and the battery are mutually electrically connected, and are all connected inside the rotating housing.

Abstract: The present invention pertains to the technical field of genetic engineering, and specifically relates to a method for generating a site-specific mutation in an organism in the absence of an artificial DNA template and a use thereof. The method comprises the following steps: sequentially generating two or more DNA breaks at a specific site in a genome of an organism and spontaneously repairing them respectively, wherein a later DNA break is generated based on a new sequence generated from a previous DNA break repair. In the present invention, a new target is designed based on a sequence formed by a new repair event generated by sequential editing, and thus, mutations may be sequentially formed for multiple times at a specific site in the genome, which greatly enrich the types of repair events after DNA breaks, and realize new base substitution, deletion and insertion mutations that cannot be obtained in a single gene editing.

Abstract: A vehicle includes an electric machine, a battery, an inverter, and a controller. The controller switches the inverter at a switching frequency selected to generate an AC current to heat the battery, adjusts a d-axis current of the electric machine to increase a battery heating power, and adjusts a q-axis current of the electric machine according to the adjusted d-axis current.

Abstract: Disclosed are an electrically-driven gyroscope having a housing capable of alternate rotation and a control method thereof, which relate to the field of electrically-driven gyroscopes. The electrically-driven gyroscope includes a rotating housing, an internal rotator, a drive motor composed of an electrical port part and a rotating part, a drive circuit, and a battery. The internal rotator is mechanically connected to the rotating part of the drive motor, and they can coaxially rotate. The electrical port part of the motor, the drive circuit, and the battery are mutually electrically connected, and are all connected inside the rotating housing. The electrical port part and the rotating part of the drive motor rotate with respect to each other under an interaction force.

Abstract: The present invention relates to the technical fields of genetic engineering and bioinformatics, in particular, to a method for creating a new gene in an organism in the absence of an artificial DNA template, and a use thereof. The method comprises simultaneously generating DNA breaks at two or more different specific sites in the organism's genome, wherein the specific sites are genomic sites capable of separating different gene elements or different protein domains, and the DNA breaks are ligated to each other through non-homologous end joining (NHEJ) or homologous repair to generate a new combination of the different gene elements or different protein domains that is different from the original genome sequence, thereby creating a new gene. The new gene of the invention can change the growth, development, resistance, yield and other traits of the organism, and has great value in application.

Abstract: A system for controlling an electric machine of a vehicle includes, among other things, a controller module configured to attenuate noise from the electric machine by altering a corrective voltage in response to feedback about the noise. The corrective voltage and a fundamental voltage command are supplied to the electric machine as a combined voltage command. The corrective voltage is on a harmonic adjacent to a harmonic of the noise. A method of controlling noise associated with an electric machine of a vehicle includes, among other things, altering a corrective voltage to attenuate noise in response to feedback about the noise. The corrective voltage and a fundamental voltage command are supplied to the electric machine as a combined voltage command. The corrective voltage is on a harmonic adjacent to a harmonic of the noise.

Abstract: A control method includes sequentially updating a next cycle pulse width modulation command for each of an upper switch and lower switch of a phase leg of a power converter according to an order defined by timing of a rising edge of the next cycle pulse width command for one of the switches relative to a rising edge of a previous cycle pulse width command for the one of the switches.

Abstract: The present invention relates to the technical fields of genetic engineering and bioinformatics, in particular, to a method for creating a new gene in an organism in the absence of an artificial DNA template, and a use thereof. The method comprises simultaneously generating DNA breaks at two or more different specific sites in the organism's genome, wherein the specific sites are genomic sites capable of separating different genetic elements or different protein domains, and the DNA breaks are ligated to each other through non-homologous end joining (NHEJ) or homologous repair to generate a new combination of the different gene elements or different protein domains that is different from the original genome sequence, thereby creating a new gene. The new gene of the invention can change the growth, development, resistance, yield and other traits of the organism, and has great value in application.

Abstract: A vehicle includes an electric machine having a number of pole pairs, N, a position sensor having a number of pole pairs, M, that generates output indicative of a rotational position of the electric machine, and one or more controllers. The one or more controllers generate a remapped rotational position according to a product of the rotational position and L/N, generate a scaled position according to a product of the remapped rotational position and N/M, and command the electric machine to produce a specified torque or speed based on the scaled position. M is not equal to and not a factor of N, and L is a minimum common multiplier of N and M.

Abstract: A control method includes sequentially updating a next cycle pulse width modulation command for each of an upper switch and lower switch of a phase leg of a power converter according to an order defined by timing of a rising edge of the next cycle pulse width command for one of the switches relative to a rising edge of a previous cycle pulse width command for the one of the switches.

Abstract: A vehicle includes an electric machine, a battery, an inverter, and a controller. The controller switches the inverter at a switching frequency selected to generate an AC current to heat the battery, adjusts a d-axis current of the electric machine to increase a battery heating power, and adjusts a q-axis current of the electric machine according to the adjusted d-axis current.

Abstract: An electric machine includes a rotor and a stator. The rotor is configured to generate rotational motion. The stator is disposed radially about the rotor. The stator has a core and windings. The core defines a first array of orifices about an inner diameter of the core and a second array of orifices radially outward from the first array of orifices. The windings are disposed within the first array of orifices. A magnetic material is configured to advance into and retract from the second array of orifices to adjust a magnetic flux within an airgap defined between the rotor and the stator.

Abstract: A vehicle power system includes a battery bus between a traction battery and voltage converter, a high-voltage bus between the voltage converter and an inverter, and a controller. The controller, responsive to a contactor between the traction battery and voltage converter opening, controls an engine to maintain a speed of a generator electrically coupled with the inverter within a predefined range, controls the voltage converter to drive a measured voltage of the battery bus toward a first commanded value based on a first difference between the first commanded value and measured voltage of the battery bus, and controls the generator to drive a measured voltage of the high-voltage bus toward a second commanded value different than the first commanded value based on the first difference and a second difference between the second commanded value and the measured voltage of the high-voltage bus.

Abstract: A vehicle includes a traction battery, an inverter, and a controller. The inverter includes a plurality of pairs of switches. Each of the pairs includes an upper switch that is directly electrically connected with a positive terminal of the traction battery and a lower switch that is directly electrically connected with a negative terminal of the traction battery. The controller, responsive to presence of a fault condition and during each of consecutive switching periods, deactivates all of the switches for a predetermined portion of the switching period, activates only the upper switches for another predetermined portion of the switching period, deactivates all of the switches for yet another predetermined portion of the switching period, and activates only the lower switches for still yet another predetermined portion of the switching period.

Abstract: A vehicle includes an electric machine having a number of pole pairs, N, a position sensor having a number of pole pairs, M, that generates output indicative of a rotational position of the electric machine, and one or more controllers. The one or more controllers generate a remapped rotational position according to a product of the rotational position and L/N, generate a scaled position according to a product of the remapped rotational position and N/M, and command the electric machine to produce a specified torque or speed based on the scaled position. M is not equal to and not a factor of N, and L is a minimum common multiplier of N and M.

Abstract: A vehicle includes a traction battery, an inverter, and a controller. The inverter includes a plurality of pairs of switches. Each of the pairs includes an upper switch that is directly electrically connected with a positive terminal of the traction battery and a lower switch that is directly electrically connected with a negative terminal of the traction battery. The controller, responsive to presence of a fault condition and during each of consecutive switching periods, deactivates all of the switches for a predetermined portion of the switching period, activates only the upper switches for another predetermined portion of the switching period, deactivates all of the switches for yet another predetermined portion of the switching period, and activates only the lower switches for still yet another predetermined portion of the switching period.

Abstract: A multi-level converter includes a first multi-phase inverter and a second multi-phase inverter. The first multi-phase inverter includes a first direct current (DC) positive line, a first DC negative line, and a first plurality of alternating current (AC) lines. Each AC line of the first plurality of AC lines is configured to be connected to a single phase winding of an electric machine. Each single phase winding is connected to a common neutral connector in a Y-winding configuration or between a pair of single phase windings in a ?-winding configuration. The second multi-phase inverter includes a second DC positive line, a second DC negative line, and a second plurality of AC lines and is connected in a similar manner to the first multi-phase inverter. The first DC negative line is electrically coupled to the second DC positive line to connect the first multi-phase inverter and the second multi-phase inverter in series.

Abstract: A vehicle power system includes a battery bus between a traction battery and voltage converter, a high-voltage bus between the voltage converter and an inverter, and a controller. The controller, responsive to a contactor between the traction battery and voltage converter opening, controls an engine to maintain a speed of a generator electrically coupled with the inverter within a predefined range, controls the voltage converter to drive a measured voltage of the battery bus toward a first commanded value based on a first difference between the first commanded value and measured voltage of the battery bus, and controls the generator to drive a measured voltage of the high-voltage bus toward a second commanded value different than the first commanded value based on the first difference and a second difference between the second commanded value and the measured voltage of the high-voltage bus.

Abstract: An electric drive system has a motor including a rotor, an inverter, and a controller. The controller perturbs a position of the rotor via a pulse width modulation (PWM) command to the inverter such that the motor receives an Id current that changes during the perturbing and an Iq current, and responsive to the Iq current settling at zero during the perturbing, alters the PWM command to cause the rotor to rotate.