Abstract: A power source system may include a main power source, a power converter including a capacitor, a relay configured to switch between connection and disconnection between the power converter and the main power source, an auxiliary power source, a boost converter having a low voltage terminal thereof connected to the auxiliary power source, and having a high voltage terminal thereof connected to the power converter without interposing the relay, and a controller configured to pre-charge the capacitor prior to placing the relay in a connected state. During the pre-charging of the capacitor, the controller may be configured to set an output current of the boost converter to a first current value while a specific auxiliary device connected to the auxiliary power source executes a specific process, and change the output current to a second current value larger than the first current value after the execution is completed.

Abstract: A method for multi-objective optimization, preferably including: evaluating objective functions at a point, determining a plurality of initial points, and/or determining a final point. A method for wireless power delivery, preferably including performing the method for multi-objective optimization to optimize wireless power delivery. A system for multi-objective optimization, preferably including one or more computation modules and one or more objective function evaluation modules, such as one or more wireless power transmitters and/or receivers.

Abstract: A vehicle door handle circuit coupled to a vehicle control unit includes a transmission antenna circuit, a control circuit and an actuation sensor via which the door handle circuit receives DC voltage for supplying the control circuit or AC voltage for controlling the antenna circuit. The antenna circuit includes a series oscillating circuit with an inductor and a capacitor. A series circuit including a first capacitor and a first rectifier is connected between two contacts and in parallel with the antenna circuit allows part of the AC voltage signal to be used for the voltage supply of the control circuit. A second rectifier connects one of the two contacts to the series circuit. A third rectifier is also provided in order to feed DC voltage to the vehicle control unit.

Abstract: A power source system may include a main power source, a power converter including a capacitor, a relay configured to switch between connection and disconnection between the power converter and the main power source, an auxiliary power source, a boost converter having a low voltage terminal thereof connected to the auxiliary power source, and having a high voltage terminal thereof connected to the power converter without interposing the relay, and a controller configured to pre-charge the capacitor prior to placing the relay in a connected state when a main switch of a vehicle is turned on. The controller may be configured to store a peak value of a current of the auxiliary power source in a memory of the controller, and start to pre-charge the capacitor when a current of the auxiliary power source falls from the peak value by more than a predetermined current difference.

Abstract: A parallel power supply device includes a plurality of DC/DC converters connected in parallel, and each DC/DC converter includes: first and second switching circuits with a transformer therebetween; first and second reactors; and a control circuit. The control circuit generates a duty cycle so that a deviation between voltage of a load and target voltage becomes 0. Correction is performed such that, when the magnitude of the duty cycle is smaller than a set value Vth, the magnitude is fixed at 0, and otherwise, the magnitude is decreased by the set value Vth. Then, the phase shift amounts for drive signals for the first and second switching circuits are determined, and the first and second switching circuits are subjected to phase shift control.

Abstract: A vehicle wiring harness assembly for installing an aftermarket electronic device into a vehicle electrical system includes a relay plug that is insertable into a starter relay socket in a vehicle electrical system fuse box. The relay plug takes the place of the starter relay in the vehicle electrical system fuse box. A fuse plug is insertable into a fuse slot in the vehicle electrical system fuse box. Thus, the fuse plug is in electrical communication with the battery of the vehicle electrical system. A wiring harness is electrically coupled to each of the relay plug and the fuse plug. In this way the wiring harness can supply voltage and ground to an aftermarket electronic device without modifying existing wiring in the vehicle electrical system.