Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.

A charging system includes a charging device including a plurality of power supply segments and a management device. Each of the plurality of power supply segments is configured to supply charging power to an electrified vehicle in proximity to the power supply segment in a non-contact manner. The management device is configured to manage the charging device and communicate with the electrified vehicle. The management device is configured to, when the electrified vehicle detects an abnormality in power supply from the power supply segment, regarding any of the plurality of power supply segments, receive an abnormality signal including identification information corresponding to the power supply segment from the electrified vehicle. The management device is configured to, when receiving the abnormality signal from a plurality of the electrified vehicles regarding any of the plurality of power supply segments, determine that there is an abnormality in the power supply segment.

A foreign object detection apparatus and method, and a wireless charger. In the foreign object detection apparatus, a signal generation module generates a first calibration excitation signal based on first indication information received from a processing module and generates at least two first calibration carrier signals based on the first indication information. A phase difference detection module determines, based on each first calibration carrier signal and a first current signal obtained by a foreign object detection module under an action of the first calibration excitation signal, a first phase difference between each first calibration carrier signal and the first current signal. The processing module determines a target initial phase based on the first phase difference, and then generates second indication information. The second indication information indicates the signal generation module to generate a detection carrier signal whose initial phase is the target initial phase.

A power supply station includes a power supply device that is accommodated in a housing. The power supply device includes a power supply coil that supplies electric power to a power reception device via a power reception coil, and an electric power supply circuit that supplies AC power to the power supply coil. The housing is provided with an accommodating section that accommodates the power supply coil and is provided at a position facing the power reception coil in a state in which the two-wheeled vehicle is parked at a predetermined position, and a cover section that is formed to surround at least a part including an upper end of an outer periphery of the accommodating section and to protrude toward the two-wheeled vehicle from a surface of the accommodating section on a side facing the power reception coil of the parked two-wheeled vehicle.

A power supply station includes a power supply device that is accommodated in a housing. The power supply device includes a power supply coil that supplies electric power to a power reception device via a power reception coil, and an electric power supply circuit that supplies AC power to the power supply coil. The housing is provided with an accommodating section that accommodates the power supply coil and is provided at a position facing the power reception coil in a state in which the two-wheeled vehicle is parked at a predetermined position, and a cover section that is formed to surround at least a part including an upper end of an outer periphery of the accommodating section and to protrude toward the two-wheeled vehicle from a surface of the accommodating section on a side facing the power reception coil of the parked two-wheeled vehicle.

A control system for a wireless power transfer (WPT) system includes current sampling modules, voltage sampling modules, a logic conversion circuit, and a controller area network (CAN) communication module that are all connected to a microprocessor module; the current sampling module is connected to the logic conversion circuit through a signal isolation circuit, the logic conversion circuit is connected to a pulse-width modulation (PWM) module, the PWM module is connected to an inverter circuit or a DC/DC converter, and the current sampling module and the voltage sampling module are connected to a primary side or a secondary side of the WPT system; transmitter coils on the primary side are spaced apart on the road, a receiver coil on the secondary side is disposed on a chassis of an electric vehicle, and the transmitter coil includes a double rectangular coil, a ferrite core surface, and a shielding aluminum plate.

A control system for a wireless power transfer (WPT) system includes current sampling modules, voltage sampling modules, a logic conversion circuit, and a controller area network (CAN) communication module that are all connected to a microprocessor module; the current sampling module is connected to the logic conversion circuit through a signal isolation circuit, the logic conversion circuit is connected to a pulse-width modulation (PWM) module, the PWM module is connected to an inverter circuit or a DC/DC converter, and the current sampling module and the voltage sampling module are connected to a primary side or a secondary side of the WPT system; transmitter coils on the primary side are spaced apart on the road, a receiver coil on the secondary side is disposed on a chassis of an electric vehicle, and the transmitter coil includes a double rectangular coil, a ferrite core surface, and a shielding aluminum plate.

A method for checking a test secondary unit of an inductive test charging system for charging an electrical energy store, wherein the test charging system comprises the test secondary unit having a test secondary coil and a reference primary unit having a reference primary coil, includes recording a plurality of actual primary unit impedance values of the test charging system at the reference primary coil for a corresponding plurality of test combinations of values of operating parameters of the test charging system. The method also includes comparing the plurality of actual primary unit impedance values with a reference value range for a primary unit impedance.

A method for checking a test secondary unit of an inductive test charging system for charging an electrical energy store, wherein the test charging system comprises the test secondary unit having a test secondary coil and a reference primary unit having a reference primary coil, includes recording a plurality of actual primary unit impedance values of the test charging system at the reference primary coil for a corresponding plurality of test combinations of values of operating parameters of the test charging system. The method also includes comparing the plurality of actual primary unit impedance values with a reference value range for a primary unit impedance.

A wireless electrical power supply apparatus 100 includes a first electrical power supply unit 101, a second electrical power supply unit 104, voltage control circuits 113 and 123 configured to control a first voltage difference between a first input voltage E.sub.1 and a first output voltage E.sub.2 during forward power transmission and a second voltage difference between a second input voltage E.sub.2 and a second output voltage E.sub.1 during reverse power transmission, a second switching control circuit 121, 122 configured to turn off a second transistor Q.sub.2 during the forward power transmission and thereby cause a second diode D.sub.2 to perform rectification, and a first switching control circuit 111, 112 configured to turn off a first transistor Q.sub.1 during the reverse power transmission and thereby cause a first diode D.sub.1 to perform rectification.