9 results about "Inrush current limiter" patented technology

An example cooling system includes a power source, a first pump cassette configured to circulate fluid through the cooling system, and a second pump cassette configured to circulate fluid through the cooling system. The first pump cassette is connected to the power source and includes a first inrush current limiter circuit and a first pump controller. The second pump cassette is also connected to the power source and includes a second inrush current limiter circuit and a second pump controller. The first inrush current limiter circuit is connected in series between the power source and the first pump controller, and the second inrush current limiter circuit is connected in series between the power source and the second pump controller.

An apparatus and method for limiting inrush current to an end device provides an alternating current (AC) to the end device via a power cord including first and second current carrying conductors. A voltage sensor enclosed by a housing attached to a power cord and connected to the conductors senses an input voltage. A current sensor within the housing senses an inrush current via the first conductor. A microcontroller unit (MCU) within the housing receives the sensed input voltage and inrush current. Based on the sensed input voltage, the MCU determines a voltage drop across a negative temperature coefficient (NTC) thermistor serially connected (with a switching device) to the first conductor. When the sensed inrush current and / or the sensed input voltage reaches a threshold level, the MCU engages the NTC thermistor to limit inrush current by opening the switching device.

A printable paste for producing an electrical component, including a printable, non-conductive coating, electrically conductive particles and ceramic NTC particles, wherein the electrically conductive particles and the ceramic NTC particles are homogeneously distributed in the printable, non-conductive coating. There is also provided a method for producing a printable paste, a thin film including the printable paste, a method for producing the thin film, and a temperature sensor and an inrush current limiter including the thin film having the printable paste.

An apparatus and method for limiting an inrush current to a terminal device provides an alternating current (AC) to the terminal device via a power line including a first current carrying conductor and a second current carrying conductor. A voltage sensor surrounded by a housing attached to a power line and connected to a conductor senses an input voltage. A current sensor within the housing senses an inrush current via the first conductor. A microcontroller unit (MCU) within the housing receives the sensed input voltage and the inrush current. Based on the sensed input voltage, the MCU determines a voltage drop across a negative temperature coefficient (NTC) thermistor connected in series (with the switching device) to the first conductor. When the sensed inrush current and / or the sensed input voltage reaches a threshold level, the MCU engages the NTC thermistor by opening the switching device to limit the inrush current.

The disclosure relates to an inrush current controller for a mining / construction vehicle The inrush current controller (100) comprises: an input (102) configured to be electrically connected or disconnected to an electrical power grid (200); an output (104) configured to be electrically connected or disconnected to a first mining / construction vehicle (300); an inrush current limiter (110) connected between the input (102) and the output (104) and configured to limit or eliminate an inrush current when activated; and a controller (120) configured to: receive a first information element (IE1) indicating an inrush current event associated with a second mining / construction vehicle (300´); and control the inrush current limiter (110) based on the first information element (IE1). Furthermore, the disclosure also relates to a corresponding method and a mining / construction vehicle comprising such an inrush current controller.

To provide a device and a method for limiting inrush current to an end device to which alternating current (AC) is supplied via a power cord including first and second current carrying conductors.SOLUTION: In a method, a voltage sensor attached to a power cord and accommodated in a housing connected to conductors senses input voltage. A current sensor within the housing senses inrush current via a first conductor. A microcontroller unit (MCU) within the housing receives the sensed input voltage and inrush current. Based on the sensed input voltage, the MCU determines a voltage drop of both ends of a negative temperature coefficient (NTC) thermistor serially connected via a switching device to the first conductor. When the sensed inrush current and / or the sensed input voltage reaches a threshold level, the MCU engages the NTC thermistor to limit inrush current by opening the switching device.SELECTED DRAWING: Figure 3A

An example cooling system includes a power source, a first pump cassette configured to circulate fluid through the cooling system, and a second pump cassette configured to circulate fluid through the cooling system. The first pump cassette is connected to the power source and includes a first inrush current limiter circuit and a first pump controller. The second pump cassette is also connected to the power source and includes a second inrush current limiter circuit and a second pump controller. The first inrush current limiter circuit is connected in series between the power source and the first pump controller, and the second inrush current limiter circuit is connected in series between the power source and the second pump controller.

A power converter includes a charger, a battery, a motor, an inrush current limiter, and processing circuitry. A first switching unit connects the charger to the battery. A second switching unit connects a positive conductor to the neutral point of the motor. A third switching unit connects the battery and the inverter. The inrush current limiter is connected in parallel to the third switching unit and includes a resistance element and a fourth switching unit. The controller pre-charges a second capacitor arranged between the battery and the inverter by turning off the third switching unit and turning on the fourth switching unit. The controller pre-charges a first capacitor arranged between the charger and the battery after pre-charging the second capacitor by performing a step-down operation with the inverter while turning on the second and third switching units and turning off the first and fourth switching units.