A power electronics module for an industrial or vehicle battery charger system or the like is provided. The power electronics module utilizes a chassis housing including a heatsink surface and a plurality of sidewalls. A main power section printed circuit board is disposed adjacent to the heatsink surface of the chassis housing a. A low voltage, low power printed circuit board is disposed adjacent to the main power section printed circuit board opposite the heatsink surface of the chassis housing. An alternating current input filter portion printed circuit board including electromagnetics is disposed along one of the plurality of sidewalls of the chassis housing and separated from the low voltage, low power printed circuit board within the chassis housing.

The present invention suppresses leakage magnetic field. A power transfer coil configured to transmit or receive power includes: an inner coil; a first outer coil formed so as to surround the inner coil such that a magnetic flux opposite in phase to a magnetic flux outside the inner coil is generated outside the first outer coil, the first outer coil having one end connected to a first terminal and the other end connected to one end of the inner coil; and a second outer coil formed so as to surround the inner coil such that a magnetic flux opposite in phase to the magnetic flux outside the inner coil is generated outside the second outer coil, the second outer coil having one end connected to a second terminal and the other end connected to the other end of the inner coil.

A system for controlling capacitors comprised in an at least partly electrical driven vehicle. The system comprises a converter comprising a first capacitor connected to a first side of a three-phase bridge. The system comprises a third capacitor adapted to be controlled, via a first switch, to be either connected in parallel to or disconnected from the first capacitor. The system is adapted such that, when the converter is activated and is initiated to start operating or is currently operating, the first switch is in a closed position such that the third capacitor is connected. The system is further adapted such that, when the converter is inactivated and is not in operation, the first switch is in an open position such that the third capacitor is disconnected.

Antenna array calibration for wireless charging is disclosed. In one aspect, an initial calibration sequence is performed each time a wireless charging station is powered on. The initial calibration sequence utilizes a reference antenna element, which is an antenna element randomly selected from a plurality of antenna elements in the wireless charging station, to determine relative receiver phase errors between the reference antenna element and each of the other antenna elements in an antenna array. In another aspect, a training sequence is performed after completing the initial calibration sequence to determine total relative phase errors between the reference antenna element and each of the other antenna elements in the antenna array. Adjustments can then be made to match respective total relative phase errors among the plurality of antenna elements to achieve phase coherency among the plurality of antenna elements for improved wireless charging power efficiency.

A vehicle powertrain includes an IGBT, having a Kelvin emitter and a mirror current sense, configured to energize an inductance, a first switch configured to draw a current from a gate of the IGBT at a rate based on a resistance engaged by the first switch while a current of the inductance exceeds a threshold, and a second switch configured to increase the rate in response to the current being less than the threshold. In one embodiment, the current is based on a filtered voltage across a resistor connected between the mirror current sense and chassis ground while the Kelvin emitter is connected to chassis ground. In another embodiment, the current is based on a filtered voltage across a resistor connected between the mirror current sense and the Kelvin emitter.

A motor drive device that includes: a power control unit that drives a motor, which configures a motive power source of a moving body, by supplying a drive signal modulated according to a carrier frequency; a memory; and a processor that is coupled to the memory, the processor being configured to: predict torque demand on the motor, and change the carrier frequency of the power control unit in a case in which an increase in the torque demand on the motor has been predicted.

An electric vehicle harness routing structure is provided for an electric vehicle having an electric motor as a drive source, a control device to control the electric motor as well as charging of a battery for power supply to the electric motor, and a power unit elastically supported on a vehicle body. The harness routing structure includes a charging port, a quick charging harness, a normal charging harness, a first quick-charge harness clip, a second quick-charge harness clip, a first normal-charge harness clip and a second normal-charge harness clip. The clips of the electric vehicle harness routing structure is provided such that when connecting a relatively movable power unit and charging ports with the quick charging harness and the normal charging harness, it is possible to prevent interference of between the charging harnesses.

A power reception-side coil is mounted on the bottom surface of a vehicle body and contactlessly receives power transmitted from a power feeding-side coil disposed on the ground. The power reception-side coil is of a solenoid type such that an electric wire is wound with the vehicle longitudinal direction as a coil axis. A shield member that is a plate-shaped magnetic shield is disposed between the bottom surface of the vehicle body and the power reception-side coil. The shield member has a forward-inclined surface serving as a first wall part protruding downward of the vehicle, the forward-inclined surface being raised and provided at the vehicle front side in a direction of the coil axis with respect to the power reception-side coil.

A power reception apparatus to which power is transferred from a power transmission apparatus in a contactless manner includes: a ferrite provided in a plate shape and having a first principal face and a second principal face; an annular coil provided on the first principal face of the ferrite; and a shield provided on the second principal face of the ferrite, wherein an outer peripheral portion of the coil is placed on an inner side relative to an outer peripheral portion of the ferrite, such that part of the first principal face is exposed on an outer-peripheral-portion side of the ferrite, and an outer peripheral side of the shield includes a stepped portion provided at a position away from the second principal face of the ferrite, such that part of the second principal face is exposed on the outer-peripheral -portion side of the ferrite.

Systems and methods for dynamically suppressing noise at electric vehicle charging sites. In particular, systems and methods are provided for measuring the ambient noise at a charging site and adjusting electric vehicle chargers to reduce noise pollution. In some examples, electric vehicle charger cooling fans potentially generate a high level of noise, and the power output of a charger can be decreased to decrease the heat generated by the chargers, thereby reducing the need for fans. In various examples, reduction of noise pollution can be especially important in specified geographies (e.g., residential neighborhoods) and/or during selected timeframes (e.g., overnight). In various examples, the system interfaces with a central computer service (e.g., a dispatch service) to intelligently route autonomous vehicles to charging sites based on noise levels at various available charging sites.