Detection of an electric current through a diode arranged parallel to a semiconductor switching element. For this purpose, an output signal of a circuit arrangement for saturation monitoring (desat circuit) is used. The output signal is evaluated at periods in which the semiconductor switching…
A power conversion device includes a high-potential side path that electrically connects a positive electrode terminal of a first electrical storage unit and a high-potential side terminal of an upper arm switch of an inverter, a low-potential side path that electrically connects a negative…
A drive circuit includes power devices that provide current to a load. At least a portion of the power devices are disposed in a first voltage domain of the drive circuit; a controller circuit configured to provide control signals to activate and deactivate the power devices, wherein the controller…
A common-mode current sensor system and method for a traction inverter of an electric hybrid vehicle. The system and method detects/reduces excess common-mode currents that can be caused by the presence of alternating current (AC)-chassis type short circuit faults at the outputs of an inverter used…
When the voltage value of the capacitor included in the PCU is equal to or higher than a predetermined value, the vehicle power supply device turns on both the positive switching element and the negative switching element corresponding to one of a plurality of resistors so as to activate the one…
A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: one or more controllers configured to provide a test signal to control a gate leakage detection operation; and a power module including: a phase switch including…
A refuse vehicle includes a battery configured to provide electrical energy to drive at least one of a plurality of wheels, a vehicle body supported by the chassis and defining a receptacle for storing refuse therein, and an electric power take-off system including a motor configured to power to a…
A high-voltage device used in a vehicle includes a high-voltage device body, a housing that houses the high-voltage device body, an ejection member, and a control device. The ejection member is configured to eject the insulating sealant into the housing in a mist or foam form with a gas flow. The…
A motor vehicle includes a first voltage network and a second voltage network, an operating voltage of the second voltage network being lower than an operating voltage of the voltage network, and two DC voltage converters connecting the second voltage network to the first voltage network, each of…
An inverter system is provided such that the system includes a direct-current (DC) voltage supply, an inverter electrically coupled with the DC voltage supply, an electric machine electrically coupled with the inverter, and a controller coupled with the inverter. The inverter has a plurality of…
Various disclosed embodiments include illustrative controllers, dual power inverter modules, and electric vehicles. In an illustrative embodiment, a controller includes one or more processors associated with a first and second power inverter for the drive unit. Computer-readable media for the one…
An inverter control device that controls a rotary electric machine drive device that includes an inverter with a plurality of switching elements, where the active short circuit control is executed in a high rotational speed region, and the shut-down control is executed in a low rotational speed…
An electric power transmission device (130) contactlessly transmits electric power to an electric power receiving device (30). The electric power transmission device (130) includes an inverter (142), a power transmission unit (132) and an electronic control unit (170). The electronic control unit…
A power supply apparatus is provided which includes a power supply; a DC/DC converter including a switching element of an upper arm, a switching element of a lower arm and a reactor; a first switch provided between the switching element of the lower arm and the negative electrode of the power…
According to one embodiment, the inverter control device includes a signal generator. The signal generator outputs a signal to increase the resistance of the gate when the value of the DC voltage is equal to or greater than a first voltage threshold, and the value of the AC current is less than a…
Vehicle power device (100) supplies storage battery (21) with charging power from power conversion circuit (1a) to charge it with connector (3) attached to inlet (22) of electric vehicle (101). Stress detector (4) detects force exerted on junction (5) by tensile strength of electric cable (2)…
A filter device 5 that removes a noise current generated by an inverter 6 includes a first filter capacitor 52a that is provided in parallel to a direct-current unit of the inverter 6, a first filter reactor 51a that is provided between a high-potential side of the first filter capacitor 52a and an…
A method for controlling at least a first switching circuit (7a) of a power converter (6), in particular of a rail vehicle, wherein an AC terminal of the first switching circuit (7a) is electrically connected to a first feeding circuit, wherein the first feeding circuit comprises at least one…
The invention relates to a drive system (1), wherein the drive system (1) comprises at least two inverters (3, 31, 32, 33) and at least two motors (2). The motors (2), which each comprise a stator and a rotor, each have at least a first winding system (21) and a second winding system (22) in the…
A method for discharging a DC intermediate circuit of a converter and a DC intermediate circuit (10) and a converter comprising at least one group of at least two controllable power semiconductor switches (S1, S2, S3, S4, S5, S6, S7, S8) connected in series between two poles (UDC+, UDC-) of the DC…
A first power converter 1 connected to a plurality of motors is configured to operate as a DC/AC converter or an AC/DC converter. A second power converter 2 connected to a generator 5 is configured to operate as a DC/AC converter or the AC/DC converter. A control device 100 is configured to cause…
A charging/discharging device 100 includes a charging/discharging connector 3 that electrically connects a storage battery and the charging/discharging device 100, a cable that is connected to the charging/discharging connector at one end and is connected to the charging/discharging device at the…
A fault diagnostic system (1) of the present invention includes a first fault diagnostic device (3) and a second fault diagnostic device (5). The first fault diagnostic device (3) acquires the voltage value of a battery (2) in accordance with a synchronization signal, and sends the voltage value…
A power circuit abnormality detection method for a power circuit detects whether an abnormality in a power source relay exists. The power circuit includes a pre-charge circuit opening and closing a connection between a direct current power source and a smoothing condenser by bypassing the power…
As a configuration to perform multilevel control of a voltage, the number of the components is decreased. A power conversion apparatus for a vehicle of an embodiment is provided with a single-phase two-level converter and a single-phase three-level converter. The single-phase two-level converter is…
An electric unit is attached to a power unit including a motor-generator, the power unit being disposed in a power unit mounting chamber that is formed at a front of a vehicle and separated from a vehicle cabin by a partition wall. The electric unit includes: a high-voltage component including an…
A control section (20) of a power supply device calculates a battery voltage on the basis of a capacitor voltage detected by a voltage sensor (17) during precharging that is performed with a main relay section (12) turned off and a precharge relay section (15) turn on and the value of resistance of…
Provided is a control device for an AC rotating machine, for controlling the AC rotating machine including a plurality of sets of windings. The control device includes: a plurality of inverters each including, in respective phases, switching elements for controlling voltages to be applied to…
Battery system (1), comprising a plurality of cells (3), a load circuit (4) to which the voltage of the cells (3) is applied, a current sensor (5) which is configured to detect the current flowing in the load circuit (4), an electronic unit (6) which is configured to evaluate signals from the…
If there is a possibility of a coolant of a cooler being frozen, switching elements are made to generate heat by feeding a current through the switching elements. Two kinds of sensors for measuring a temperature on the side of a heat receiving portion and the side of a heat radiating portion are…