Patents by Inventor Arun Kumar RAGHUNATHAN
Arun Kumar RAGHUNATHAN 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).
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Publication number: 20240047133Abstract: A charging pad (130) for charging one or more receiver devices (106, 108) is disclosed. The charging pad (130) includes a power drive unit (110) configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Further, the charging pad (130) includes a transmitting unit (114) including a single power exchange coil (120) coupled to the power drive unit (110), wherein the single power exchange coil (120) includes a first coil segment (212) configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit (110). Also, the single power exchange coil (120) includes a second coil segment (214) configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit (110).Type: ApplicationFiled: October 23, 2023Publication date: February 8, 2024Inventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
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Publication number: 20240006917Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: ApplicationFiled: September 18, 2023Publication date: January 4, 2024Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Patent number: 11798737Abstract: A charging pad for charging one or more receiver devices is disclosed. The charging pad includes a power drive unit configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Further, the charging pad includes a transmitting unit including a single power exchange coil coupled to the power drive unit, wherein the single power exchange coil includes a first coil segment configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit. Also, the single power exchange coil includes a second coil segment configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit.Type: GrantFiled: December 3, 2021Date of Patent: October 24, 2023Assignee: General Electric CompanyInventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
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Publication number: 20230327491Abstract: A transmitting assembly (114, 214, 334) configured to transmit electric power in a universal wireless charging device (102, 200, 302) is presented. The transmitting assembly (114, 214, 334) includes a first coil (116, 216, 316) embedded in a printed circuit board (220) and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly (114, 214, 334) includes a second coil (118, 218, 318) disposed on the printed circuit board (220) and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices (104, 106) having different frequency standards.Type: ApplicationFiled: June 16, 2023Publication date: October 12, 2023Inventors: Suma Memana Narayana Bhat, Viswanathan Kanakasabai, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Patent number: 11764609Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: GrantFiled: March 29, 2022Date of Patent: September 19, 2023Assignee: General Electric CompanyInventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Publication number: 20230268775Abstract: A wireless charging device includes a power source configured to generate a direct current (DC) voltage signal. Also, the wireless charging device includes a driver unit configured to receive the DC voltage signal and convert the DC voltage signal to a first alternating current (AC) voltage signal. Further, the wireless charging device includes a transmitting unit including a resonant capacitor and a resonant coil, coupled to the driver unit, wherein the transmitting unit is configured to receive and transmit the first AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a receiver device based on a change in at least one of a capacitive voltage across the resonant capacitor and an inductive voltage across the resonant coil if the receiver device is positioned within a predetermined distance from the transmitting unit.Type: ApplicationFiled: April 26, 2023Publication date: August 24, 2023Inventors: Sivabalan Mohan, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Rajendra Naik, Adnan Kutubuddin Bohori
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Patent number: 11689056Abstract: A transmitting assembly (114, 214, 334) configured to transmit electric power in a universal wireless charging device (102, 200, 302) is presented. The transmitting assembly (114, 214, 334) includes a first coil (116, 216, 316) embedded in a printed circuit board (220) and configured to transmit a first AC voltage signal having a first frequency. Also, the transmitting assembly (114, 214, 334) includes a second coil (118, 218, 318) disposed on the printed circuit board (220) and configured to transmit a second AC voltage signal having a second frequency, wherein the second frequency is different from the first frequency, and wherein the first AC voltage signal having the first frequency and the second AC voltage signal having the second frequency are used to wirelessly charge a plurality of receiver devices (104, 106) having different frequency standards.Type: GrantFiled: May 21, 2018Date of Patent: June 27, 2023Assignee: General Electric CompanyInventors: Suma Memana Narayana Bhat, Viswanathan Kanakasabai, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Patent number: 11641134Abstract: A wireless charging device includes a power source configured to generate a direct current (DC) voltage signal. Also, the wireless charging device includes a driver unit configured to receive the DC voltage signal and convert the DC voltage signal to a first alternating current (AC) voltage signal. Further, the wireless charging device includes a transmitting unit including a resonant capacitor and a resonant coil, coupled to the driver unit, wherein the transmitting unit is configured to receive and transmit the first AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a receiver device based on a change in at least one of a capacitive voltage across the resonant capacitor and an inductive voltage across the resonant coil if the receiver device is positioned within a predetermined distance from the transmitting unit.Type: GrantFiled: March 19, 2018Date of Patent: May 2, 2023Assignee: General Electric CompanyInventors: Sivabalan Mohan, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan, Rajendra Naik, Adnan Kutubuddin Bohori
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Patent number: 11616399Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: GrantFiled: April 19, 2018Date of Patent: March 28, 2023Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Patent number: 11588349Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: GrantFiled: April 19, 2018Date of Patent: February 21, 2023Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Publication number: 20220393519Abstract: A wireless charging device is disclosed. The wireless charging device includes a transmitter detection coil configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device. Also, the wireless charging device includes a control unit coupled to the transmitter detection coil and configured to detect the receiver device based on the characteristic of the first AC voltage signal. Further, the wireless charging device includes a driver unit coupled to the control unit and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device is detected. In addition, the wireless charging device includes a power transmission coil configured to wirelessly transmit the second AC voltage signal to the receiver device.Type: ApplicationFiled: August 16, 2022Publication date: December 8, 2022Inventors: Sivabalan Mohan, Rajendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
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Patent number: 11431198Abstract: A wireless charging device (102) is disclosed. The wireless charging device (102) includes a transmitter detection coil (130) configured to receive a first alternating current (AC) voltage signal having a characteristic associated with a receiver device (104). Also, the wireless charging device (102) includes a control unit (112) coupled to the transmitter detection coil (130) and configured to detect the receiver device (104) based on the characteristic of the first AC voltage signal. Further, the wireless charging device (102) includes a driver unit (108) coupled to the control unit (112) and configured to convert a direct current (DC) voltage signal of an input power to a second AC voltage signal if the receiver device (104) is detected. In addition, the wireless charging device (102) includes a power transmission coil (116) configured to wirelessly transmit the second AC voltage signal to the receiver device (104).Type: GrantFiled: April 30, 2018Date of Patent: August 30, 2022Assignee: General Electric CompanyInventors: Sivabalan Mohan, Rejendra Naik, Arun Kumar Raghunathan, Somakumar Ramachandrapanicker
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Publication number: 20220224162Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: ApplicationFiled: March 29, 2022Publication date: July 14, 2022Inventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Publication number: 20220224161Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: ApplicationFiled: March 28, 2022Publication date: July 14, 2022Inventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Patent number: 11303156Abstract: A contactless power transfer system is provided. The contactless power transfer system includes a first power exchanger coil configured to exchange power. The contactless power transfer system also includes a first power converter operatively coupled to the first power exchanger coil and configured to convert a direct current power to an alternating current power at a system frequency. The contactless power transfer system further includes a controller configured to control an operating state of the first power converter to vary an alternating current power provided to the first power exchanger coil at the system frequency.Type: GrantFiled: December 12, 2016Date of Patent: April 12, 2022Assignee: General Electric CompanyInventors: Pradeep Vijayan, Rajendra Naik, Arun Kumar Raghunathan, Vishnu Mahadeva Iyer
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Patent number: 11289948Abstract: A wireless charging device includes a driver unit configured to generate one of a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Also, the wireless charging device includes a transmitting unit having a first coil and a first capacitor and configured to transmit the first AC voltage signal. Further, the transmitting unit includes a second coil and a second capacitor and configured to transmit the second AC voltage signal. Additionally, the wireless charging device includes a control unit configured to detect a first receiver device operating at the first frequency based on a change in a first voltage in the transmitting unit, and detect a second receiver device operating at the second frequency based on a change in a second voltage in the transmitting unit.Type: GrantFiled: April 19, 2018Date of Patent: March 29, 2022Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Suma Memana Narayana Bhat, Arun Kumar Raghunathan, Rahul Bhujade, Satishbabu Bhogineni, Somakumar Ramachandrapanicker
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Publication number: 20220094206Abstract: A charging pad for charging one or more receiver devices is disclosed. The charging pad includes a power drive unit configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency Further, the charging pad includes a transmitting unit including a single power exchange coil coupled to the power drive unit, wherein the single power exchange coil includes a first coil segment configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit. Also, the single power exchange coil includes a second coil segment configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit.Type: ApplicationFiled: December 3, 2021Publication date: March 24, 2022Inventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
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Patent number: 11223240Abstract: A charging pad for charging one or more receiver devices is disclosed. The charging pad includes a power drive unit configured to generate a first AC voltage signal having a first frequency and a second AC voltage signal having a second frequency. Further, the charging pad includes a transmitting unit including a single power exchange coil coupled to the power drive unit, wherein the single power exchange coil includes a first coil segment configured to transmit the first AC voltage signal having the first frequency when the first AC voltage signal is received from the power drive unit. Also, the single power exchange coil includes a second coil segment configured to transmit the second AC voltage signal having the second frequency when the second AC voltage signal is received from the power drive unit.Type: GrantFiled: October 27, 2017Date of Patent: January 11, 2022Assignee: General Electric CompanyInventors: Suma Memana Narayana Bhat, Deepak Aravind, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
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Patent number: 11081900Abstract: A charging pad includes a power drive unit and a transmitting unit. The power drive unit includes a first oscillator to generate a first AC voltage signal having a first frequency, and a first amplifier to amplify the first AC voltage signal. Also, the power drive unit includes a second oscillator to generate a second AC voltage signal having a second frequency, and a second amplifier to amplify the second AC voltage signal. Additionally, the power drive unit includes an adder to combine the amplified first AC voltage signal and the amplified second AC voltage signal. Furthermore, the transmitting unit includes a first frequency coil configured to transmit the amplified first AC voltage signal having the first frequency, and a second frequency coil configured to transmit the amplified second AC voltage signal having the second frequency.Type: GrantFiled: October 28, 2017Date of Patent: August 3, 2021Assignee: General Electric CompanyInventors: Viswanathan Kanakasabai, Somakumar Ramachandrapanicker, Arun Kumar Raghunathan
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Patent number: 11075545Abstract: A wireless power transfer system is disclosed. The wireless power transfer system includes a first converting unit for converting a first DC voltage of an input power to a first AC voltage, a contactless power transfer unit for transmitting the input power having the first AC voltage, and a second converting unit for transmitting the power having a second DC voltage corresponding to the first AC voltage to an electric load. Additionally, the wireless power transfer system includes an active voltage tuning unit for controlling the second DC voltage based on a difference between the second DC voltage and a reference voltage and at least one among a difference between the resonant frequency and the constant operating frequency and a difference between a phase angle of the first AC voltage and a phase angle of an AC current.Type: GrantFiled: July 31, 2019Date of Patent: July 27, 2021Assignee: General Electric CompanyInventors: Kapil Jha, Arun Kumar Raghunathan, Arvind Kumar Tiwari, Deepak Aravind