Systems and methods are provided for measuring electrical parameters in a conductor without requiring a galvanic connection. A device includes a body and a clamp jaw assembly movable between an open position that allows a conductor to be moved into a measurement area, and a closed position that secures the conductor within the measurement area. The clamp jaw assembly includes sensors positioned inside a clamp jaw of the clamp jaw assembly. A user may apply a force to an actuator to move the clamp jaw assembly from the closed position into the open position so that the conductor may be positioned and secured in the measurement area. The clamp jaw assembly includes a visual indicator to guide the user to position the conductor within an optimal region in the measurement area. The clamp jaw assembly is sized and dimensioned to automatically position the conductor within the optimal region during measurements.

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. In some embodiments, the power line sensors can include a split-core transformer. In some embodiments, a power line sensing device is disposed on each conductor of a three-phase network. The sensing devices can be configured to measure and monitor, among other things, current and electric-field on the conductors. Methods of installing, sealing, and protecting the split-core transformers of the power line sensors are also discussed.

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. In some embodiments, the power line sensors can include a split-core transformer. In some embodiments, a power line sensing device is disposed on each conductor of a three-phase network. The sensing devices can be configured to measure and monitor, among other things, current and electric-field on the conductors. Methods of installing, sealing, and protecting the split-core transformers of the power line sensors are also discussed.

A pair of clamping parts clamp a conductor to be measured and biased in closing directions. A pair of gripping parts are provided to be able to change a distance between the respective clamping parts according to a distance therebetween. Magnetoelectric conversion element(s) for current measurement is/are provided on either one or both of the respective clamping parts. A distance measurement unit is provided to be able to measure a physical quantity corresponding to the distance between the respective gripping parts as a physical quantity corresponding to the distance between the respective clamping parts. A current calculation device is provided to obtain a current flowing in the conductor to be measured on the basis of a magnetic field detected by the magnetoelectric conversion element(s) for current measurement and the physical quantity measured by the distance measurement unit when the conductor to be measured is clamped by the respective clamping parts.

A pair of clamping parts clamp a conductor to be measured and biased in closing directions. A pair of gripping parts are provided to be able to change a distance between the respective clamping parts according to a distance therebetween. Magnetoelectric conversion element(s) for current measurement is/are provided on either one or both of the respective clamping parts. A distance measurement unit is provided to be able to measure a physical quantity corresponding to the distance between the respective gripping parts as a physical quantity corresponding to the distance between the respective clamping parts. A current calculation device is provided to obtain a current flowing in the conductor to be measured on the basis of a magnetic field detected by the magnetoelectric conversion element(s) for current measurement and the physical quantity measured by the distance measurement unit when the conductor to be measured is clamped by the respective clamping parts.

The current disclosure relates to the design of an apparatus for enhancing the operation and reliability of high-power multi-chip modules, which are used in the design and implementation of power electronics converters. This apparatus is especially useful for modules containing recently commercialized, high-performance wide band-gap semiconductors such as Silicon Carbide (SiC), which commonly emit undesirable high-frequency ringing and oscillation in the Near-RF spectral band between 1-30 MHz. The disclosed apparatus provides near-complete elimination of this high frequency spectral content, while leaving the desired frequency range (1-100 kHz) of the module unaffected. In addition to the suppression of this undesirable high-frequency content, the disclosed apparatus also provides for accurate, galvanically-isolated, high-bandwidth, real-time current measurement, which is essential for some types of power electronics converters. The apparatus disclosed here provides ringing suppression and current measurement in simple circuit topology that can be implemented compactly inside the geometry of a multi-chip power module.

Systems and methods are provided for measuring electrical parameters in a conductor without requiring a galvanic connection. A device includes a body and a clamp jaw assembly movable between an open position that allows a conductor to be moved into a measurement area, and a closed position that secures the conductor within the measurement area. The clamp jaw assembly includes sensors positioned inside a clamp jaw of the clamp jaw assembly. A user may apply a force to an actuator to move the clamp jaw assembly from the closed position into the open position so that the conductor may be positioned and secured in the measurement area. The clamp jaw assembly includes a visual indicator to guide the user to position the conductor within an optimal region in the measurement area. The clamp jaw assembly is sized and dimensioned to automatically position the conductor within the optimal region during measurements.

A power line sensing device is provided that can include a number of features. In one embodiment, a power line sensing device includes a split-core transformer comprising a first core half having a first core face and a second core half having a second core face. The first core face and/or the second core face are covered with a protective film. The power line sensing device further includes a mechanism that, when the power line sensing device is installed, removes the protective film and joins the first core face to the second core face around a power line conductor.

A power line sensing device is provided that can include a number of features. In one embodiment, a power line sensing device includes a split-core transformer comprising a first core half having a first core face and a second core half having a second core face. The first core face and/or the second core face are covered with a protective film. The power line sensing device further includes a mechanism that, when the power line sensing device is installed, removes the protective film and joins the first core face to the second core face around a power line conductor.

Systems and methods are provided for measuring electrical parameters in an insulated conductor without requiring a galvanic connection. A sensor probe is provided that includes a body and a flexible arm or strap that is movable between an open position that allows a conductor to be moved into and out of a measurement area of the probe, and a closed position that secures the insulated conductor within the measurement area so that one or more measurements may be obtained. The electrical parameter sensor probe may include a non-contact sensor coupled to at least one of the body or the flexible arm. A user may apply a force to an actuator (e.g., slide switch) which moves the flexible arm from the closed position into the open position against a bias force so that the insulated conductor under test may be positioned and secured in the measurement area of the sensor probe.