Abstract: A grid voltage phase detector includes: a d-q transformation unit for receiving a three-phase signal and producing a signal on d axis and a signal on q axis; a phase signal producing unit for producing a signal for phase synchronization of grid voltage from the signal on d axis and the signal on q axis; and a PR filtering unit, with a first filter having no change in magnitude and phase at a rated frequency, a second filter introducing 90° phase lead at a rated frequency, a third filter introducing 90° phase lag, and a fourth filter having no change in magnitude and phase at a rated frequency, for removing unbalanced components and harmonic components from the signal on d axis and the signal on q axis produced by the d-q transformation unit and providing the signals to the phase signal producing unit.

Abstract: A method of a wearable device displaying icons is provided. The method includes displaying a plurality of circular icons comprising a first circular icon located in a center area of a touch display in a first size and a second circular icon located outside of the center area of the touch display in a second size smaller than the first size, and based on a direction of a touch input received on the touch display, moving the plurality of circular icons such that the first circular icon is moved to a first position located outside of the center area of the touch display and the second circular icon is moved from a second position located outside the center area of the touch display to the center area of the touch display and enlarged in size from the second size to the first size.

Abstract: A reservoir tank includes first and second chambers separated by partitions. The first chamber is configured such that coolant circulates through the first chamber. The second chamber is provided on a side and spaced apart from the first chamber and is configured such that coolant having a different temperature from the coolant stored in the first chamber circulates through the second chamber. A first partition and a second partition are provided so as to separate the first chamber and the second chamber from each other, and are spaced apart from and facing each other. A middle chamber is defined in a space between the first partition and the second partition and configured such that the coolant from the first chamber or the second chamber circulates through the middle chamber, thereby providing a heat buffer between the first chamber and the second chamber.

Abstract: An integrated thermal management module for a vehicle includes a multi-channel including a plurality of valve spaces and a plurality of coolant channels communicating with the valve spaces and disposed around the valve spaces, a plurality of valve bodies inserted into the valve spaces, respectively, and configured to open and close the coolant channels around the valve spaces of the multi-channel upon operation, and a plurality of pumps coupled to the multi-channel. The valve spaces are formed on one side of the multi-channel, the valve bodies are coupled to the one side of the multi-channel, the pumps are coupled to an opposite side of the multi-channel, and a rotation axis of each of the valve bodies and a rotation axis of each of the pumps are identical.

Abstract: A reservoir tank includes first and second chambers separated by partitions. The first chamber is configured such that coolant circulates through the first chamber. The second chamber is provided on a side and spaced apart from the first chamber and is configured such that coolant having a different temperature from the coolant stored in the first chamber circulates through the second chamber. A first partition and a second partition are provided so as to separate the first chamber and the second chamber from each other, and are spaced apart from and facing each other. A middle chamber is defined in a space between the first partition and the second partition and configured such that the coolant from the first chamber or the second chamber circulates through the middle chamber, thereby providing a heat buffer between the first chamber and the second chamber.