A controller includes a tracking regulator having a reference voltage input and a voltage output and configured to regulate the voltage output to the reference voltage input. The controller is configured to, in response to a short to ground of the voltage output, electrically couple the reference voltage input to the voltage output.

A vehicle supplies stable and efficient power to a load of a vehicle during a failure or performance degradation of the vehicle by forming an isolated electrical network. The vehicle includes a power supply unit, an electrical network including at least one load configured to receive power from the power supply unit, and a sensor unit that acquires at least one of current flowing in a plurality of the electrical networks and a voltage supplied to the at least one load. A power distribution module determines an insolation required portion based on the current flowing in the electrical network and the voltage supplied to the at least one load, and connects or disconnects at least one point of the electrical network based on the isolation required portion to form an isolated electrical network.

An electric vehicle that has: a DC power supply; an inverter; an inverter control circuit; a smoothing capacitor that is connected between input terminals of the inverter; a discharge circuit that discharges the smoothing capacitor; a control power supply that supplies electric power to the inverter control circuit; a holding capacitor that stores the electric power supplied from the control power supply and supplies the electric power to the inverter control circuit; and a collision detector that detects a collision of the vehicle. The collision detector transmits a first signal and a second signal that follows the first signal when detecting the collision. The inverter control circuit stops supplying the electric power to a switching element drive circuit when receiving the first signal. The inverter control circuit discharges the smoothing capacitor when receiving the second signal.

The power supply system includes: a first power circuit having a first battery, a second power circuit having a second battery, a voltage converter which converts voltages between both circuits, voltage sensors which acquire a first circuit voltage value V1 and second circuit voltage value V2, a current sensor which acquires a passing current value Iact, and a passing power control unit which operates the voltage converter. The passing power control unit performs PWM control under a control duty ratio obtained by summing a correction duty ratio calculated based on the current deviation change rate and a base duty ratio, in a case of, after starting PWM control under the base duty ratio decided based on the voltage values V1, V2 during activation of the voltage converter, the value of current deviation between a passing current value Iact and activation target value Itrg exceeding a permitted range.

A battery system may include a battery that in operation couples to an electrical system, and a battery control module that in operation electrically couples to the battery. The battery control module may read battery data, estimate a state of charge of the battery based at least in part on the battery data, and estimate a state of charge error of the battery based on magnitudes of state of charge error sources. Additionally, the battery control module may update a state of health estimation of the battery when the state of charge error of the battery exceeds a predetermined threshold.

A control device executes: controlling a voltage in a d-axis direction and a voltage in a q-axis direction applied to a rotating electric machine driven by an electric power supplied from an inverter, to which a magnetic pole position detector for detecting a magnetic pole position of the rotor is attached, and which includes a stator for generating a magnetic field using a winding; acquiring q-axis current data indicating a component in the q-axis direction of a current flowing through the rotating electric machine when a component in the d-axis direction of the voltage applied to the rotating electric machine is equal to or less than a predetermined voltage; and determining, based on the q-axis current data, a correction amount of the magnetic pole position satisfying a condition that a current indicated by the q-axis current data is equal to or less than a predetermined current and correcting the magnetic pole position based on the correction amount.

A method and system for verifying operation of a motor propulsion plant fitted to an automotive vehicle with electric or hybrid traction, the motor propulsion plant including an electric motor including a permanent-magnet rotor. The method includes: a regulation of currents of a stator and a measurement of direct and quadratic components of the currents; an application, in a model of the electric motor linking control signals to the direct and quadratic components of the currents, of a change of variable in which X=Iq3+Id3, Y=Iq−Id; determination of minimum and maximum bounds for X and Y to deduce therefrom minimum and maximum bounds for Iq and Id; and a comparison between the measured direct and quadratic components of the currents and the minimum and maximum bounds for Iq and Id.

This disclosure provides systems, methods and apparatus for detecting foreign objects. In one aspect an apparatus for detecting a presence of an object is provided. The apparatus includes a resonant circuit having a resonant frequency. The resonant circuit includes a sense circuit including an electrically conductive structure. The apparatus further includes a coupling circuit coupled to the sense circuit. The apparatus further includes a detection circuit coupled to the sense circuit via the coupling circuit. The detection circuit is configured to detect the presence of the object in response to detecting a difference between a measured characteristic that depends on a frequency at which the resonant circuit is resonating and a corresponding characteristic that depends on the resonant frequency of the resonant circuit. The coupling circuit is configured to reduce a variation of the resonant frequency by the detection circuit in the absence of the object.

The present invention is provided with: a sensing unit which is provided in a vehicle and measures the three-dimensional shape of an object; a matching unit for performing matching between multiple sets of structure information, in which are associated a data group indicating the three-dimensional shapes of structures provided beforehand near a path the vehicle will travel along and positional information indicating the posit ions of the structures, and a data group indicating the three-dimensional shape of the object measured by the sensing unit, and for specifying the position of the object; and an estimated position determination unit for determining, with the position specified by the matching unit as a reference position, the estimated position of the vehicle on the basis of the reference position.

A battery management system and method for performing a battery state and, optionally, health parameter observation is disclosed, in particular, cell state-of-charge (SOC) observation, with two redundant, independent and dissimilar lanes. Specifically, a SOC determination in a first one of the lanes is based on Coulomb Counting. The other lane employs a different algorithm than Coulomb Counting. In some embodiments, a battery health observation is further performed independently by the two lanes, wherein the first lane employs an aging model and the other lane a different (dissimilar) algorithm. On the basis of state and health observation, state (state of function) of the battery system can be predicted to determine a range of flight in accordance with a predetermined flight profile.