Patents by Inventor Ming-Shi Huang
Ming-Shi Huang 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).
-
Publication number: 20250056684Abstract: A heating device includes a resonant circuit, a detection unit and a control unit. The resonant circuit includes an inverter circuit and a resonant tank. The inverter circuit provides a resonant tank current and a resonant tank voltage. The resonant tank includes a heating coil, a resonant tank capacitor, a resonant tank equivalent inductor and a resonant tank equivalent resistor. The detection unit calculates an inductance of the resonant tank equivalent inductor according to a capacitance of the resonant tank capacitor, a resonant period and a first expression. The detection unit calculates a resistance of the resonant tank equivalent resistor according to the inductance of the resonant tank equivalent inductor, a time change value, a reference voltage value, a negative peak voltage value and a second expression.Type: ApplicationFiled: December 27, 2023Publication date: February 13, 2025Inventors: Ming-Shi Huang, Zheng-Feng Li, Jhih-Cheng Hu, Yi-Min Chen, Chun-Wei Lin
-
Patent number: 11789090Abstract: A power detection circuit is provided for detecting current total input power of a resonant circuit. The power detection circuit includes a detection circuit and an estimation circuit. The detection circuit receives a current signal and obtains resonant-slot baseband power according to the current signal to generate the baseband power value. The current signal represents a resonant-slot current generated by the resonant circuit. The estimation circuit receives the baseband power value and estimates the current total input power according to the baseband power value to generate an estimated power value.Type: GrantFiled: April 25, 2022Date of Patent: October 17, 2023Assignee: DELTA ELECTRONICS, INC.Inventors: Ming-Shi Huang, Zheng-Feng Li, Jhih-Cheng Hu, Yi-Liang Lin, Yu-Min Meng, Chun-Wei Lin, Chun Chang, Thiam-Wee Tan
-
Publication number: 20230217551Abstract: A heating device includes a resonant circuit, a detection unit and a control unit. The resonant circuit includes an inverter circuit and a resonant tank. The inverter circuit provides a resonant tank current and a resonant tank voltage. The resonant tank includes a heating coil, a resonant tank capacitor, a resonant tank equivalent inductor and a resonant tank equivalent impedance. The detection unit detects the resonant tank current and the resonant tank voltage to acquire associated parameters. The detection unit calculates an inductance of the resonant tank equivalent inductor according to a capacitance of the resonant tank capacitor, a resonant period and a first expression. The detection unit calculates an impedance value of the resonant tank equivalent impedance according to the inductance of the resonant tank equivalent inductor, a time difference, the resonant period, a reference current value, a negative peak current value and a second expression.Type: ApplicationFiled: March 8, 2022Publication date: July 6, 2023Inventors: Ming-Shi Huang, Zheng-Feng Li, Jhih-Cheng Hu, Yi-Liang Lin, Yu-Min Meng, Chun-Wei Lin, Chun Chang, Thiam Wee Tan
-
Publication number: 20230213591Abstract: A power detection circuit is provided for detecting current total input power of a resonant circuit. The power detection circuit includes a detection circuit and an estimation circuit. The detection circuit receives a current signal and obtains resonant-slot baseband power according to the current signal to generate the baseband power value. The current signal represents a resonant-slot current generated by the resonant circuit. The estimation circuit receives the baseband power value and estimates the current total input power according to the baseband power value to generate an estimated power value.Type: ApplicationFiled: April 25, 2022Publication date: July 6, 2023Inventors: Ming-Shi HUANG, Zheng-Feng LI, Jhih-Cheng HU, Yi-Liang LIN, Yu-Min MENG, Chun-Wei LIN, Chun CHANG, Thiam-Wee TAN
-
Patent number: 9698721Abstract: AC motor driving system and driving method thereof are provided. The driving system and method are capable of increasing power factor, adjusting waveform of the DC ripple voltage for increasing driving efficiency. The driving system is basically constructed by connecting three circuits. The first circuit is a three-phase full wave rectifying circuit and is used to transfer commercial electricity to a first DC voltage. Then, the second circuit is used to transfer the first DC voltage to a second DC voltage that ripples voltage thereof having a semi-sinusoidal waveform. The third circuit is an AC driving circuit, and receives the second AC voltage for driving the AC motor. Thereby, the driving efficiency can be increased. The capacitance used in the present disclosure has low capacitance value, thus the power factor can be increased, and usage time of the AC motor driving apparatus can also be increased.Type: GrantFiled: October 8, 2015Date of Patent: July 4, 2017Assignee: RHYMEBUS CORPORATIONInventors: Ming-Shi Huang, Chang-Ming Wang, Kuan-Cheng Chen, Ming-Chang Chou
-
Publication number: 20160294316Abstract: AC motor driving system and driving method thereof are provided. The driving system and method are capable of increasing power factor, adjusting waveform of the DC ripple voltage for increasing driving efficiency. The driving system is basically constructed by connecting three circuits. The first circuit is a three-phase full wave rectifying circuit and is used to transfer commercial electricity to a first DC voltage. Then, the second circuit is used to transfer the first DC voltage to a second DC voltage that ripples voltage thereof having a semi-sinusoidal waveform. The third circuit is an AC driving circuit, and receives the second AC voltage for driving the AC motor. Thereby, the driving efficiency can be increased. The capacitance used in the present disclosure has low capacitance value, thus the power factor can be increased, and usage time of the AC motor driving apparatus can also be increased.Type: ApplicationFiled: October 8, 2015Publication date: October 6, 2016Inventors: Ming-Shi HUANG, Chang-Ming WANG, Kuan-Cheng CHEN, Ming-Chang CHOU
-
Patent number: 9059650Abstract: An angle detecting module for a motor rotor is provided. The angle detecting module includes a permanent-magnet synchronous motor, three linear hall components and a processing device. The permanent-magnet synchronous motor includes a stator and a rotor. The three linear hall components are disposed on the stator; and the linear hall components are spaced by electrical 120 degrees. Each of the linear hall components outputs an analog signal after measuring a magnetic field position of the rotor, and each of the analog signals has magnetically saturated third harmonic component. The processing device is electrically connected to the linear hall components, and the processing device optimizes each of the analog signals and generates an average rotor angle.Type: GrantFiled: January 1, 2014Date of Patent: June 16, 2015Assignee: RHYMEBUS CORPORATIONInventors: Ming-Shi Huang, Hung-Hsing Chiang, Ming-Chang Chou, Cheng-Ching Chang
-
Publication number: 20140210390Abstract: An angle detecting module for a motor rotor is provided. The angle detecting module includes a permanent-magnet synchronous motor, three linear hail components and a processing device. The permanent-magnet synchronous motor includes a stator and a rotor. The three linear hall components are disposed on the stator; and the linear hall components are spaced by electrical 120 degrees. Each of the linear hall components outputs an analog signal after measuring a magnetic field, position of the rotor, and each of the analog signals has magnetically saturated third harmonic component. The processing device is electrically connected to the linear hall components, and the processing device optimizes each of the analog signals and generates an average rotor angle.Type: ApplicationFiled: January 1, 2014Publication date: July 31, 2014Applicant: RHYMEBUS CORPORATIONInventors: Ming-Shi HUANG, Hung-Hsing CHIANG, Ming-Chang CHOU, Cheng-Ching CHANG
-
Patent number: 8094472Abstract: A power factor correction converter capable of fast adjusting load functions to (a) convert a single-phase AC voltage into a DC voltage output; (b) control an input current and an input voltage for a correspondent electrical phase, namely the power factor that is 1; and (c) control a DC output voltage level. The converter is provided with a booster-based AC-DC converter as a core, in which the circuit includes a rectification circuit, a switching circuit consisting of a DC inductor and a power crystal, an energy-saving capacitor, a protection circuit, a microprocessor, and auxiliary circuits around. The power factor control, output voltage, and current control and filter modules function in the form of software program instead of conventional hardware circuits. Further, a powerful controller uses an output current feedback to enhance the DC output voltage to suppress the disturbance of load.Type: GrantFiled: June 2, 2009Date of Patent: January 10, 2012Assignee: Rhymebus CorporationInventors: Cheng-Ching Chang, Ming-Shi Huang, Yue-Huei Lei
-
Publication number: 20100302818Abstract: A power factor correction converter capable of fast adjusting load functions to (a) convert a single-phase AC voltage into a DC voltage output; (b) control an input current and an input voltage for a correspondent electrical phase, namely the power factor that is 1; and (c) control a DC output voltage level. The converter is provided with a booster-based AC-DC converter as a core, in which the circuit includes a rectification circuit, a switching circuit consisting of a DC inductor and a power crystal, an energy-saving capacitor, a protection circuit, a microprocessor, and auxiliary circuits around. The power factor control, output voltage, and current control and filter modules function in the form of software program instead of conventional hardware circuits. Further, a powerful controller uses an output current feedback to enhance the DC output voltage to suppress the disturbance of load.Type: ApplicationFiled: June 2, 2009Publication date: December 2, 2010Inventors: Cheng-Ching Chang, Ming-Shi Huang, Yue-Huei Lei