Abstract: A power supply includes an I/O module configured to receive a high voltage DC input and output a high voltage DC, a plurality of DC converter modules configured to receive the high voltage DC output from the I/O module and output a low voltage DC output, and a plurality of AC inverter modules configured to receive the high voltage DC output from the I/O module and output a high voltage AC output. Each of the plurality of DC converter modules, each of the plurality of AC inverter modules and the I/O module may be mounted in a corresponding individual chassis. Each of the individual chassis may be configured to be stackable together into a single line replaceable unit (LRU). Each of the individual chassis may have an identically shaped outer frame.

Abstract: Passive filters, line replaceable units and a modular power supply are provided. In one example the modular power supply has a DC bus link having a positive line and a negative line with at least one passive filter and an inductor having a first end and a second end, the first end coupleable to a phase output. A diode bridge having at least a first diode and a second diode, with an anode of the first diode coupleable to the second end of the inductor and a cathode of the first diode coupleable to the positive line, wherein a cathode of the second diode is coupleable to the second end of the inductor and an anode of the second diode is coupleable to the negative line, and wherein the first diode and the second diode are each configured to produce a combined reverse recovery charge that achieves a target DV/DT for an output voltage of the at least one passive filter.

Abstract: Passive filters, line replaceable units and a modular power supply are provided. In one example the modular power supply has a DC bus link having a positive line and a negative line with at least one passive filter and an inductor having a first end and a second end, the first end coupleable to a phase output. A diode bridge having at least a first diode and a second diode, with an anode of the first diode coupleable to the second end of the inductor and a cathode of the first diode coupleable to the positive line, wherein a cathode of the second diode is coupleable to the second end of the inductor and an anode of the second diode is coupleable to the negative line, and wherein the first diode and the second diode are each configured to produce a combined reverse recovery charge that achieves a target DV/DT for an output voltage of the at least one passive filter.

Abstract: Passive filters, line replaceable units and a modular power supply are provided. The passive filter comprises an inductor and a diode bridge. The inductor has a first end and a second end. The first end is coupleable to a phase output of an inverter. The diode bridge comprises a first diode and a second diode. The anode of the first diode is coupled to the second end of the inductor and a cathode of the first diode is coupleable to a positive DC bus voltage. The cathode of the second diode is coupled to the second end of the inductor and the anode of the second diode is coupleable to a negative DC bus voltage. The passive filter output is coupleable to cable(s) for an AC electric machine. A reverse recovery charge of the diodes achieves a target DV/DT for an output voltage of the passive filter at operating temperatures.

Abstract: Passive filters, line replaceable units and a modular power supply are provided. The passive filter comprises an inductor and a diode bridge. The inductor has a first end and a second end. The first end is coupleable to a phase output of an inverter. The diode bridge comprises a first diode and a second diode. The anode of the first diode is coupled to the second end of the inductor and a cathode of the first diode is coupleable to a positive DC bus voltage. The cathode of the second diode is coupled to the second end of the inductor and the anode of the second diode is coupleable to a negative DC bus voltage. The passive filter output is coupleable to cable(s) for an AC electric machine. A reverse recovery charge of the diodes achieves a target DV/DT for an output voltage of the passive filter at operating temperatures.

Abstract: A fault detection system for a system having a single DC input and a plurality of A/C loads such as an electric or hybrid electric vehicle. A plurality of inverters convert DC to 3-phase A/C and supply A/C power to a corresponding individual A/C load. Each inverter includes a common mode current transformer and a controller. An individual corresponding common mode current transformer is coupled to the 3-phase A/C output of the inverter. An individual corresponding controller is coupled to the output of an individual corresponding common mode current transformer and is coupled to an individual corresponding A/C load. Each controller is configured to detect a fault at the individual corresponding A/C load and in the case of detection of a fault at an individual corresponding A/C load, the corresponding controller disables the A/C load.

Abstract: A charging system for a vehicle is provided. The charging system is for charging an energy storage system of the vehicle using grid power. The grid power may be an external three-phase AC. The charging system may use field weakening techniques to reduce a peak line-line voltage detected at input terminals of conversion circuitry when a need is determined.

Abstract: Various embodiments of the present invention relate to an input output balanced bidirectional buck-boost converter and associated system and method. In one example, a DC/DC bidirectional buck-boost power converter has both input and output voltages centered around chassis. This converter allows for overlapping input and output voltages, and allows for use of offset based leakage fault detection.

Abstract: A method for determining the nature of a ground fault in a floating direct voltage load powering context includes measuring the load voltage and the current at a nominal balance point, both before and after closing a circuit to the load. The fault resistance and the fault voltage are determined as the solution to an equation in two unknowns given the conditions before and after application of load voltage or at least precharge.

Abstract: The increasing use of electrically powered vehicles has created a need for inexpensively and effectively measuring high currents for motor control, as for example digital motor control. Because the high operating voltages of traction motors, the motor current sensors should be non-contacting. A non-contacting current sensor having a rated capacity significantly less than the motor winding current is coupled to one or more of the conductors of a paralleled multiconductor motor winding for sensing the current in that conductor. The paralleled electrical motor conductors are paralleled by additional similar conductors, so that only a fraction of the current to be measured flows through the conductor(s) associated with the sensor. The current sensor elements may be mounted on a pc board, which supports the elements, and also has one or more printed patterns which define conductors associated with the sensor.

Abstract: The increasing use of electrically powered vehicles has created a need for inexpensively and effectively measuring high currents for motor control, as for example digital motor control. Because the high operating voltages of traction motors, the motor current sensors should be non-contacting. A non-contacting current sensor having a rated capacity significantly less than the motor winding current is coupled to one or more of the conductors of a paralleled multiconductor motor winding for sensing the current in that conductor. The paralleled electrical motor conductors are paralleled by additional similar conductors, so that only a fraction of the current to be measured flows through the conductor(s) associated with the sensor. The current sensor elements may be mounted on a pc board, which supports the elements, and also has one or more printed patterns which define conductors associated with the sensor.