Abstract: A motor driving system and a method for diagnosing a fault thereof are provided. The motor driving system includes a driving unit including a motor, and a first inverter and a second inverter connected to both ends of each of multiple windings, respectively, and a control unit configured to control outputs of the first inverter and the second inverter based on a zero-sequence current command and further configured to diagnose a fault in the driving unit based on a phase current flowing in each of the multiple windings as a result of the control.

Abstract: An inverter control device is capable of reducing an inverter junction temperature by minimizing a maximum value of a phase current flowing through an inverter. The inverter control device includes a current command output module configured to output a current command corresponding to an input torque command, a current command conversion module configured to receive the current command and a zero sequence current command, and phase-shift the current command to output a phase-shifted current command, a switching determination module configured to output a control signal based on an input motor rotation speed and the torque command, and a switching module configured to selectively output one of the current command and the phase-shifted current command in response to the control signal.

Abstract: A device for estimating a junction temperature of a power module at time of low-speed driving of a motor includes one or more processors, and a storage medium operatively connected to the one or more processors and storing computer-readable instructions. When computer-readable instructions are executed by one or more processors, one or more processors are configured to determine a ripple of a maximum conduction loss due to conduction of power module at time of low-speed driving of motor, estimate a temperature ripple of power module from ripple of maximum conduction loss, and estimate junction temperature of power module by adding a junction temperature change of power module at time of high-speed driving of motor and a temperature of a coolant for cooling power module to temperature ripple. Temperature ripple of power module is estimated using a thermal model.

Abstract: A motor driving apparatus includes: a driving unit which is implemented as at least one power module and includes a top switch, a bottom switch, and a changeover switch configured to switch a motor driving mode; and a controller configured to determine a power loss of each of the top switch, the bottom switch, and the changeover switch to obtain a total power loss of the at least one power module, and determine a temperature of the at least one power module based on the total power loss.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: A processing system and a method therefor are provided. The method includes receiving a selection signal that a payment on delivery linked with a mobile application is designated as a payment mode for goods, from a terminal of a user, in which the mobile application is installed, generating an order request signal as a payment server which connects with the terminal over a network matches goods identification data associated with the goods with user identification data of the user who is registered in the mobile application to correspond to each other; verifying ordered records associated with the user identification data and starting a payment session for payment as the terminal executes the mobile application according to an operation of the user who receives the goods, and receiving a payment completion signal generated from the payment session and paying for the goods according to the goods identification data.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed is a method of processing a payment using an IMS. The method includes obtaining information on a chat room generated through an instant message application between a first user and at least one second user with respect to a payment transaction of the first user, updating a payment account of the first user and a payment account of the at least one second user in response to processing the payment transaction of the first user, and outputting a message associated with the payment transaction of the first user through the chat room.

Abstract: Provided is a system and method for collecting a document. The system may include an identification information receiver to receive, from a host of a site, identification information of a document of which an update may occur, a collection request transfer unit to transmit a collection request for the document based on the identification information, an update information collector to receive update information of the document from the host, and a search result provider to provide, to the host, a search result extracted from the update information of the document, in response to the search request being received from the host. The system for collecting the document may reduce load of a web site, and may improve accuracy of the document to be collected.

Abstract: Provided is a system and method for collecting a document. The system may include an identification information receiver to receive, from a host of a site, identification information of a document of which an update may occur, a collection request transfer unit to transmit a collection request for the document based on the identification information, an update information collector to receive update information of the document from the host, and a search result provider to provide, to the host, a search result extracted from the update information of the document, in response to the search request being received from the host. The system for collecting the document may reduce load of a web site, and may improve accuracy of the document to be collected.