Abstract: An apparatus and methods to reduce current transient during power mode transfer in uninterruptible power supply (UPS). The disclosure provides a zero-cross detection based phase width modulated (PWM) element (E3). The element (E3) is configured to delay activation of a PWM modulator, by delaying a PWM start command for a first delay time (Tdz), wherein the first delay time is the time between receiving a static switch command to the time when a positive sequence component of a phase load current crosses zero. The element (E3) is further configured to delay the activation of the PWM modulator for a second delay time (Tdi) after the end of the first delay time (Tdz), by delaying the PWM start command for the second delay time, wherein the second delay time is based on a power factor of load connected to the UPS.

Abstract: The present disclosure discloses a UPS system configured in parallel configuration. The UPS system comprises a plurality of slave UPS units, a master UPS unit comprising a controller configured to identify number of operative slave UPS units from the plurality of slave UPS units when at least one slave UPS unit from the plurality of slave UPS units is inoperative and change operating voltage of the master UPS unit based on the identified number of operative slave UPS units. The UPS system further comprises at least one slave UPS unit from the plurality of slave UPS units comprising a controller configured to monitor the operating voltage of the master UPS unit to detect the change in the operating voltage, determine the number of operative slave UPS units, calculate a slave current for supplying to the load, and initiate the slave UPS unit to supply the slave current to the load.

Abstract: An apparatus and methods to reduce current transient during power mode transfer in uninterruptible power supply (UPS). The disclosure provides a zero-cross detection based phase width modulated (PWM) element (E3). The element (E3) is configured to delay activation of a PWM modulator, by delaying a PWM start command for a first delay time (Tdz), wherein the first delay time is the time between receiving a static switch command to the time when a positive sequence component of a phase load current crosses zero. The element (E3) is further configured to delay the activation of the PWM modulator for a second delay time (Tdi) after the end of the first delay time (Tdz), by delaying the PWM start command for the second delay time, wherein the second delay time is based on a power factor of load connected to the UPS.

Abstract: The present disclosure discloses a UPS system configured in parallel configuration. The UPS system comprises a plurality of slave UPS units, a master UPS unit comprising a controller configured to identify number of operative slave UPS units from the plurality of slave UPS units when at least one slave UPS unit from the plurality of slave UPS units is inoperative and change operating voltage of the master UPS unit based on the identified number of operative slave UPS units. The UPS system further comprises at least one slave UPS unit from the plurality of slave UPS units comprising a controller configured to monitor the operating voltage of the master UPS unit to detect the change in the operating voltage, determine the number of operative slave UPS units, calculate a slave current for supplying to the load, and initiate the slave UPS unit to supply the slave current to the load.

Abstract: A system for inserting one or more services within a software application is provided. The system comprises memory circuitry configured to receive and store a software application and a service module. The software application is defined by a first set of instructions and the service module defined by a second set of instructions. The system further comprises processing circuitry configured to execute the service module with the software application to generate a service integrated software application. The service module is configured to enable one or more online services on the software application by inserting a third set of instructions at pre-defined locations within the first set of instructions of the software application.

Abstract: A heat exchanger for a vehicle is provided having a core with a set of flow tubes connected to a header. The header includes a receiver/dryer housing in fluid communication with the flow tubes. An insert assembly is received in an end of the receiver/dryer housing and includes a sleeve having a substantially smooth outer surface, a filter portion received within the sleeve, and a plug portion configured to form a substantially fluid-tight seal with the sleeve. The inner diameter of the receiver/dryer housing and the outer diameter of the sleeve are substantially equal to each other.

Abstract: A heat exchanger for a vehicle is provided, where the heat exchanger includes core having first, and second sets of flow tubes extending between first and second headers and defining separate flow paths. One of the headers includes a first portion in fluid communication with the first set of flow tubes and a second portion defining a receiver/dryer chamber that is in fluid communication with the second set of flow tubes. A dryer is located within the receiver/dryer chamber.

Abstract: A condenser assembly for a vehicle air conditioning system is provided. The condenser assembly includes a core including first and second ends and a plurality of tubes extending therebetween, a first header located adjacent to the first end of the core, and a second header located adjacent to the second end of the core. The second header includes a receiver/dryer having a receiver/dryer chamber, a manifold cooperating with the receiver/dryer to define a manifold chamber, and a mounting rib unitarily formed with at least one of the receiver/dryer and the manifold. The mounting rib includes a first portion extending away from the at least one of the receiver/dryer and the manifold in a first direction and a second portion extending away from the first portion in a second direction that is substantially nonparallel with the first direction.

Abstract: A condenser assembly for a vehicle air conditioning system. The condenser assembly includes a core comprised of a plurality of parallel tubes between which are located a plurality of fins. A pair of headers are located on opposite ends and in fluid communication with the tubes of the core. The headers are constructed such that their primary components exhibit constant cross sectional profiles along their lengths. This enables the volumetrics of the condenser assembly to be altered with a minimal amount of tooling change over being required.