Abstract: An interactive clothing device (10) having electronic components has a controller (14) with a battery pack (16); a microprocessor (60) of the controller (14) controls at least one display member (12). A location unit (20) provides a location of the device (10), within a pre-determined zone, to the controller (14). Additional components can also be controlled by the microprocessor (60) such as a vibrating device, speaker, and electroluminescent elements (22). The device (10) works with a mobile application technology, to control the digital display (12) of one devices or a plurality of adjacent devices (10) located within the pre-determined zone. A system (110) formed of many devices (10) along with a network control unit (100) is also disclosed.

Abstract: A cordless electric blow-dryer system is a highly efficiency blow-dryer system that incorporates a steam generator, a heat exchanger, and a high efficiency battery into a cordless housing to eliminate draped and tangled power cords in professional hair styling stations and homes for safe, convenient use. The cordless electric blow-dryer system may also be used in locations where power outlets are unavailable. The handle may have a grip with resiliently deformable material, a power slide switch, a temperature limit setting, and a cool down button. The battery(s) slide into the bottom of the handle to power the device.

Abstract: The present disclosure is directed to a system and method for protecting a power converter of a renewable energy power system and/or a stand-alone energy storage system connected to a power grid during an adverse voltage event, such as a high voltage ride through (HVRT) event. In one embodiment, the method includes monitoring, via a control system, a current-voltage parameter of the power converter, wherein the current-voltage parameter is indicative of an adverse voltage event occurring at the power grid. Another step includes transferring, via a switching power supply, energy from a DC link of the power converter to one or more energy storage devices of an energy storage system coupled to the power converter when the current-voltage parameter indicates that an adverse voltage event is occurring.

Abstract: Provided is an approach for active control of cross currents flowing among multiple paralleled converters. Control of cross currents is achieved by using at least one proportional-integral (PI) controller and at least one resonant controller to target several selected dominant harmonics with infinite gains to ensure elimination of targeted harmonic cross currents in steady state. The cross currents are decomposed by into (1) common mode and differential mode components or (2) current phase domain components and each component is suppressed to a value approximately near zero using the controller. Also provided is a device comprises instructions, that, when executed by a processor, cause the processor to perform operations, which regulate and suppress cross current within a power system.

Abstract: Provided is an approach for active control of cross currents flowing among multiple paralleled converters. Control of cross currents is achieved by using at least one proportional-integral (PI) controller and at least one resonant controller to target several selected dominant harmonics with infinite gains to ensure elimination of targeted harmonic cross currents in steady state. The cross currents are decomposed by into (1) common mode and differential mode components or (2) current phase domain components and each component is suppressed to a value approximately near zero using the controller. Also provided is a device comprises instructions, that, when executed by a processor, cause the processor to perform operations, which regulate and suppress cross current within a power system.

Abstract: The present disclosure is directed to a system and method for protecting a power converter of a renewable energy power system and/or a stand-alone energy storage system connected to a power grid during an adverse voltage event, such as a high voltage ride through (HVRT) event. In one embodiment, the method includes monitoring, via a control system, a current-voltage parameter of the power converter, wherein the current-voltage parameter is indicative of an adverse voltage event occurring at the power grid. Another step includes transferring, via a switching power supply, energy from a DC link of the power converter to one or more energy storage devices of an energy storage system coupled to the power converter when the current-voltage parameter indicates that an adverse voltage event is occurring.

Abstract: A neutral point clamped (NPC) power converter fault protection system is provided, and include a DC bus, a switching network, and a control module. The switching network is connected to the DC bus. The switching network includes at least two leg circuits. Each of the at least two leg circuits includes at least two switches connected in series and two NPC diodes. Each of the two NPC diodes corresponds to one of the at least two switches. Each of the at least two switches has an open position. The two NPC diodes are connected between a corresponding one of the at least two leg circuits and the DC bus. The control module is in communication with the switching network. The control module includes control logic for monitoring the switching network to detect a fault condition.

Abstract: A neutral point clamped (NPC) power converter fault protection system is provided, and include a DC bus, a switching network, and a control module. The switching network is connected to the DC bus. The switching network includes at least two leg circuits. Each of the at least two leg circuits includes at least two switches connected in series and two NPC diodes. Each of the two NPC diodes corresponds to one of the at least two switches. Each of the at least two switches has an open position. The two NPC diodes are connected between a corresponding one of the at least two leg circuits and the DC bus. The control module is in communication with the switching network. The control module includes control logic for monitoring the switching network to detect a fault condition.