Patents by Inventor Tae Suk BAE
Tae Suk BAE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11949324Abstract: The present disclosure relates to an overcurrent protection inverter, and more particularly, to an inverter, which uses a leg-shunt resistor so as to detect an instantaneous maximum output current and an AD current, thereby performing an inverter protection operation. The present disclosure detects the instantaneous maximum output current and detects the AD current from the leg-shunt resistor so as to perform an overcurrent protection operation when an overcurrent occurs in the entire inverter operation section, thereby enabling protection of the inverter.Type: GrantFiled: March 17, 2020Date of Patent: April 2, 2024Assignee: LS ELECTRIC CO., LTD.Inventors: Jae-Moon Lee, Chun-Suk Yang, Tae-Suk Bae
-
Publication number: 20230078868Abstract: The present disclosure relates to a device and a method for diagnosing a failure of an inverter initial charging circuit. The device for diagnosing a failure of an initial charging circuit according to the present invention is advantageous as follows: it is possible to detect whether a relay of the initial charging circuit is malfunctioning or not by using a photocoupler connected in parallel with an initial charging resistor of the initial charging circuit, on the basis that, if a current flows through the initial charging resistor in a relay-on state, the photocoupler is turned on; and it is possible to prevent component failure or burnout from occurring due to a high current flowing through the initial charging resistor in the case of a relay failure.Type: ApplicationFiled: January 7, 2021Publication date: March 16, 2023Inventors: Jae Moon LEE, Tae Suk BAE
-
Publication number: 20220200440Abstract: The present disclosure relates to an overcurrent protection inverter, and more particularly, to an inverter, which uses a leg-shunt resistor so as to detect an instantaneous maximum output current and an AD current, thereby performing an inverter protection operation. The present disclosure detects the instantaneous maximum output current and detects the AD current from the leg-shunt resistor so as to perform an overcurrent protection operation when an overcurrent occurs in the entire inverter operation section, thereby enabling protection of the inverter.Type: ApplicationFiled: March 17, 2020Publication date: June 23, 2022Inventors: Jae-Moon LEE, Chun-Suk YANG, Tae-Suk BAE
-
Patent number: 10622885Abstract: The present invention relates to a method for controlling an inverter to prevent an unnecessary fan trip. The method includes: receiving a fan current; when the fan current is above a high trip level or is below a low trip level, incrementing an error count; when the error count reaches an error count maximum value, incrementing a trip count and initializing the error count; and when the trip count reaches a trip count maximum value, generating a fan trip signal.Type: GrantFiled: February 22, 2019Date of Patent: April 14, 2020Assignee: LSIS CO., LTD.Inventors: Tae-Suk Bae, Deok-Young Lim, Hu-Jin Lee, Chun-Suk Yang
-
Publication number: 20190348905Abstract: The present invention relates to a method for controlling an inverter to prevent an unnecessary fan trip. The method includes: receiving a fan current; when the fan current is above a high trip level or is below a low trip level, incrementing an error count; when the error count reaches an error count maximum value, incrementing a trip count and initializing the error count; and when the trip count reaches a trip count maximum value, generating a fan trip signal.Type: ApplicationFiled: February 22, 2019Publication date: November 14, 2019Inventors: Tae-Suk BAE, Deok-Young LIM, Hu-Jin LEE, Chun-Suk Yang
-
Patent number: 10251320Abstract: Disclosed is a managing device for cooling an inverter. The managing device for cooling an inverter includes a fan controller configured to provide an electric current flowing in a cooling fan; and a controller configured to determine whether the current flowing in the cooling fan is out of a preset range, and, when the current is out of the preset range, configured to control the cooling fan with a control voltage different from an operating voltage of the cooling fan.Type: GrantFiled: January 11, 2018Date of Patent: April 2, 2019Assignee: LSIS CO., LTD.Inventors: Chun-Suk Yang, Tae-Suk Bae
-
Publication number: 20180270995Abstract: Disclosed is a managing device for cooling an inverter. The managing device for cooling an inverter includes a fan controller configured to provide an electric current flowing in a cooling fan; and a controller configured to determine whether the current flowing in the cooling fan is out of a preset range, and, when the current is out of the preset range, configured to control the cooling fan with a control voltage different from an operating voltage of the cooling fan.Type: ApplicationFiled: January 11, 2018Publication date: September 20, 2018Inventors: Chun-Suk YANG, Tae-Suk BAE
-
Patent number: 10003296Abstract: The present invention relates to an apparatus for controlling the operation of a power conversion device including a rectifier part, an initial charging part, a DC-link part and an inverter part. The apparatus includes: a control part configured to drive a relay connected in parallel to an initial charging resistor of the initial charging part if a DC-link voltage of the DC-link part exceeds a first reference voltage during initial charging for the DC-link part; a relay monitoring part configured to monitor whether or not the relay is normally being operated when the relay is driven; and an inverter driving part configured to stop of the driving of the inverter part if it is determined that the relay is not normally being operated by referring to a result of the monitoring of the relay monitoring part.Type: GrantFiled: November 18, 2016Date of Patent: June 19, 2018Assignee: LSIS CO., LTD.Inventors: Tae-Suk Bae, Chun-Suk Yang
-
Patent number: 9991814Abstract: A pre-charging circuit of inverter is disclosed, the pre-charging circuit of inverter including a relay arranged between an output node of the rectifier and an input node of the DC-link capacitor, and a pre-charging resistor arranged between an output node of the rectifier and an input node of the inverter unit, whereby a degree of freedom for PCB design can be obtained.Type: GrantFiled: November 12, 2014Date of Patent: June 5, 2018Assignee: LSIS CO., LTD.Inventors: Tae Suk Bae, Jae Moon Lee
-
Patent number: 9876441Abstract: In some embodiments, a control power supply device for an inverter may include a main switched-mode power supply (SMPS) for supplying rated voltages to a controller and an auxiliary circuit of the inverter, an auxiliary SMPS configured to be operated when the main SMPS is interrupted to supply the rated voltages to the controller and the auxiliary circuit of the inverter; and an SMPS controller configured to sense an output voltage from the main SMPS, determine whether the sensed voltage is within a normal range and interrupt the main SMPS and operate the auxiliary SMPS if not, and transmit trip information to the controller.Type: GrantFiled: May 31, 2016Date of Patent: January 23, 2018Assignee: LSIS CO., LTD.Inventors: Tae-Suk Bae, Chun-Suk Yang
-
Publication number: 20170310208Abstract: The present invention relates to an apparatus for controlling the operation of a power conversion device including a rectifier part, an initial charging part, a DC-link part and an inverter part. The apparatus includes: a control part configured to drive a relay connected in parallel to an initial charging resistor of the initial charging part if a DC-link voltage of the DC-link part exceeds a first reference voltage during initial charging for the DC-link part; a relay monitoring part configured to monitor whether or not the relay is normally being operated when the relay is driven; and an inverter driving part configured to stop of the driving of the inverter part if it is determined that the relay is not normally being operated by referring to a result of the monitoring of the relay monitoring part.Type: ApplicationFiled: November 18, 2016Publication date: October 26, 2017Inventors: Tae-Suk BAE, Chun-Suk YANG
-
Publication number: 20160359428Abstract: In some embodiments, a control power supply device for an inverter may include a main switched-mode power supply (SMPS) for supplying rated voltages to a controller and an auxiliary circuit of the inverter, an auxiliary SMPS configured to be operated when the main SMPS is interrupted to supply the rated voltages to the controller and the auxiliary circuit of the inverter; and an SMPS controller configured to sense an output voltage from the main SMPS, determine whether the sensed voltage is within a normal range and interrupt the main SMPS and operate the auxiliary SMPS if not, and transmit trip information to the controller.Type: ApplicationFiled: May 31, 2016Publication date: December 8, 2016Inventors: Tae-Suk BAE, Chun-Suk YANG
-
Patent number: 9448265Abstract: An apparatus and a method for detecting phase deficiency in an inverter is provided, the method including deciding whether a sector of the output current is a sector where current detection is possible based on switching operation status of the switching element in the inverter, maintaining a phase deficiency variable when deciding the current detection in the sector of the output current to be impossible, adding a count to a phase deficiency variable to accumulate when deciding the current detection in the sector of the output current to be possible and deciding the output current to be within a phase deficiency band, and determining as phase deficiency when the phase deficiency variable is greater than a prescribed detection level.Type: GrantFiled: November 12, 2014Date of Patent: September 20, 2016Assignee: LSIS CO., LTD.Inventors: Jae Moon Lee, Tae Suk Bae
-
Publication number: 20150138849Abstract: A pre-charging circuit of inverter is disclosed, the pre-charging circuit of inverter including a relay arranged between an output node of the rectifier and an input node of the DC-link capacitor, and a pre-charging resistor arranged between an output node of the rectifier and an input node of the inverter unit, whereby a degree of freedom for PCB design can be obtained.Type: ApplicationFiled: November 12, 2014Publication date: May 21, 2015Applicant: LSIS CO., LTD.Inventors: Tae Suk BAE, Jae Moon LEE
-
Publication number: 20150138854Abstract: An apparatus and a method for detecting phase deficiency in an inverter is provided, the method including deciding whether a sector of the output current is a sector where current detection is possible based on switching operation status of the switching element in the inverter, maintaining a phase deficiency variable when deciding the current detection in the sector of the output current to be impossible, adding a count to a phase deficiency variable to accumulate when deciding the current detection in the sector of the output current to be possible and deciding the output current to be within a phase deficiency band, and determining as phase deficiency when the phase deficiency variable is greater than a prescribed detection level.Type: ApplicationFiled: November 12, 2014Publication date: May 21, 2015Applicant: LSIS CO., LTD.Inventors: Jae Moon LEE, Tae Suk BAE