Abstract: Methods and systems for mitigating EMI for electric vehicle chargers are disclosed. In some embodiments, the system comprises a power cabinet comprising a first PEM for charging a first electric vehicle and a second PEM for charging the first vehicle or a second electric vehicle. The first PEM and second PEM may be switched at different frequencies. In some embodiments, a difference between a first frequency of the first PEM and a second frequency of the second PEM is greater than a noise sampling frequency.

Abstract: Systems and methods for operating an asymmetric power converter for improved efficiency, service life, and operation are provided herein. In some embodiments, the system includes a power electronics module (PEM) configured to convert between alternating current (AC) power and direct current (DC) power. The power electronics module includes a power converter having a nominal power rating, and an overrated power converter having an overrated power rating with respect to the nominal power rating, wherein the power converter is one of an AC to DC power converter and a DC to DC power converter and the overrated power converter is the other of the AC to DC power converter and the DC to DC power converter.

Abstract: Systems and methods for operating a PEM including control circuitry are provided herein. The operation includes detecting, using the control circuitry, a drop in output current of the PEM, detecting, using the control circuitry, an increase in output voltage of the PEM, and in response to detecting the drop in output current and detecting the increase in output voltage, turning off the PEM using the control circuitry. Turning off the PEM may protect circuitry of the PEM from an interruption of a continuous power flow.

Abstract: A system can include a controller. The controller can receive a signal from a charger that indicates a voltage drop in a voltage received by the charger from a power supply. The controller can operate the power supply to increase the voltage output by the power supply responsive to the signal that indicates the voltage drop.

Abstract: A power stage circuit with multiple bidirectional AC to DC circuits for bidirectional charging is modified to connect the power stage converters in series for DC to AC applications. The power stage circuit can covert a DC input from a DC power source of a vehicle to an AC output for a power outlet of the vehicle. The power stage circuit uses two lines with a 120 VAC at the power outlet. Using a common neutral line, the AC to DC circuits are connected together to form a split phase power output, and the 120 VAC lines are 180 degrees out of phase to create a 240 VAC source at the power outlet.

Abstract: Aspects of the disclosure relate to a negative bias circuit for power device driving. An apparatus may include a power source, a gate impedance path, a capacitor in series with the gate impedance path, and a clamping circuit for a transistor gate.

Abstract: A low-voltage distribution board and a direct current fast charging (DCFC) system including the low-voltage distribution board are provided. The DCFC system includes a power supply and a plurality of loads connected by a serial bus. The low-voltage distribution board includes a first input connector configured to receive power from the first power supply, and a first plurality of output connectors configured to be connected to the first plurality of loads. The low-voltage distribution board further includes a first current distribution circuit configured to provide, through the first plurality of output connectors, the received power from the first power supply to the first plurality of loads, and an identification (ID) assignment circuit configured to provide, through the first plurality of output connectors, different ID values to each of the first plurality of loads.

Abstract: Various disclosed embodiments include illustrative controller modules, direct current (DC) fast charging devices, and methods. In an illustrative embodiment, a controller module for a DC-DC converter includes a controller and computer-readable media configured to store computer-executable instructions configured to cause the controller to receive an input voltage Vin to the DC-DC converter, receive an output DC voltage Vo from the DC-DC converter, generate control signals configured to control a charging output of the DC-DC converter responsive to the received input voltage Vin and output voltage Vo, and output the generated control signals to the DC-DC converter.

Abstract: Aspects of this technical solution can a first direct-current (DC) circuit to couple with a DC battery of an electric vehicle, a capacitor of the first DC circuit configured to charge to a capacitance that satisfies a threshold of activation of a second DC circuit, and the first DC circuit to transmit, in response to a determination that the capacitor satisfies the threshold of activation of the second DC circuit, DC power between the battery of the electric vehicle and the second DC circuit.

Abstract: Energy conversion is provided. An energy conversion device can include one or more power delivery interfaces. The energy conversion device can include a pre-charge circuit configured to charge a capacitor to an operating voltage. The energy conversion device can include a user accessible interface configured to provide energy to the pre-charge circuit. The pre-charge circuit can charge the capacitor associated with the one or more power delivery interfaces. The user-accessible interfaces can include a direct current (DC) input. The user-accessible interfaces can include an alternating current (AC) input.

Abstract: Various disclosed embodiments include illustrative controller units, direct current fast charging (DCFC) units, and methods. In an illustrative embodiment, a controller unit includes a controller and a memory configured to store computer-executable instructions. The computer-executable instructions are configured to cause the controller to determine status of a power electronics module (PEM) of a direct current fast charging (DCFC) unit, and instruct the PEM to control power quality of a three-phase alternating current (AC) grid power signal in response to the determined status being available.

Abstract: Monitoring isolation resistance to validate vehicle charger functionality is provided. A system can include a first one or more resistors connected to a first terminal of a first direct current bus of a charger. The charger can be configured to deliver power to a first electric vehicle. The system can include a controller comprising circuitry. The controller can be configured to determine a resistance at the first one or more resistors. The controller can control delivery of power to the first electric vehicle responsive to a comparison of the resistance at the first one or more resistors with a threshold.

Abstract: Various disclosed embodiments include illustrative apparatuses and methods for performing vehicle-to-vehicle and/or vehicle-to-load charging. In an illustrative embodiment, an apparatus includes a multi-function DC power unit and an interface unit configured to perform battery recharging between a donor battery-powered device and a receiver battery-powered device. The interface unit is configured to removably receive the multi-function DC power unit.

Abstract: Various disclosed embodiments include illustrative controller modules, direct current (DC) fast charging devices, and methods. In an illustrative embodiment, a controller module for a DC-DC converter includes a controller and computer-readable media configured to store computer-executable instructions configured to cause the controller to receive an input voltage Vin to the DC-DC converter, receive an output DC voltage Vo from the DC-DC converter, generate control signals configured to control a charging output of the DC-DC converter responsive to the received input voltage Vin and output voltage Vo, and output the generated control signals to the DC-DC converter.

Abstract: Systems and methods for controlling a dual active bridge converter are disclosed herein. An output voltage of a dual active bridge converter is sensed. Based at least in part on the output voltage, a target intra-bridge phase shift amount between two bridges of the dual active bridge converter is computed. A plurality of switch control signals, which are provided to respective switches of the dual active bridge converter, are caused to switch according to a time-based switching sequence based on the target intra-bridge phase shift amount to compensate for variations in the output voltage.

Abstract: Methods and systems for mitigating EMI for electric vehicle chargers are disclosed. In some embodiments, the system comprises a power cabinet comprising a first PEM for charging a first electric vehicle and a second PEM for charging the first vehicle or a second electric vehicle. The first PEM and second PEM may be switched at different frequencies. In some embodiments, a difference between a first frequency of the first PEM and a second frequency of the second PEM is greater than a noise sampling frequency.

Abstract: Systems and methods for controlling a dual active bridge converter are disclosed herein. An environmental condition associated with an electric charger for an electric vehicle may be determined, where the electric charger comprises a dual active bridge converter. Based on the environmental condition associated with the electric charger, the dual active bridge converter may be caused to enter a heat generation mode that causes the dual active bridge converter to generate heat to ameliorate the environmental condition associated with the electric charger.

Abstract: A charge coupler adapted to be coupled to a charging inlet of an electric vehicle, the charge coupler including: a housing including a first portion adapted to be disposed around a first plurality of contacts and a second portion adapted to be disposed around a second plurality of contacts; a conductive member disposed between the first portion of the housing and the second portion of the housing; and a control system coupled to the conductive member and operable for sensing a break in the conductive member indicating damage to one or more of the first portion of the housing and the second portion of the housing or that the second portion of the housing is detached from the first portion of the housing. Optionally, the conductive member includes a conductive loop disposed around an inner periphery of the housing, the first plurality of contacts, and the second plurality of contacts.

Abstract: A low-voltage distribution board and a direct current fast charging (DCFC) system including the low-voltage distribution board are provided. The DCFC system includes a power supply and a plurality of loads connected by a serial bus. The low-voltage distribution board includes a first input connector configured to receive power from the first power supply, and a first plurality of output connectors configured to be connected to the first plurality of loads. The low-voltage distribution board further includes a first current distribution circuit configured to provide, through the first plurality of output connectors, the received power from the first power supply to the first plurality of loads, and an identification (ID) assignment circuit configured to provide, through the first plurality of output connectors, different ID values to each of the first plurality of loads.

Abstract: Various disclosed embodiments include illustrative controller units, direct current fast charging (DCFC) units, and methods. In an illustrative embodiment, a controller unit includes a controller and a memory configured to store computer-executable instructions. The computer-executable instructions are configured to cause the controller to determine status of a power electronics module (PEM) of a direct current fast charging (DCFC) unit, and instruct the PEM to control power quality of a three-phase alternating current (AC) grid power signal in response to the determined status being available.