Patents by Inventor Peizhong Yi
Peizhong Yi 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: 20220103090Abstract: For open loop phase pre-charge, an apparatus includes a Switching Mode Power Supply (SMPS) charging diode and a charge generator. The SMPS charging diode pre-charges an SMPS to a regulation set point from at least one phase of an Alternating Current (AC) voltage. The charge generator is powered by the pre-charged SMPS. In response to detecting the regulation set point iteratively, the charge generator detects a specified phase angle of the AC voltage. In response to the specified phase angle, the charge generator iteratively generates a charging voltage during positive voltage interval that charges a Direct Current (DC) bus capacitor to a target DC bus voltage within a charging time interval. At least a portion of the charge generator comprises one or more of hardware and executable code, the executable code stored on one or more computer readable storage media.Type: ApplicationFiled: September 25, 2020Publication date: March 31, 2022Inventors: Lixiang Wei, Peizhong Yi, Robert W. Reese, Brian P. Brown, Jatinkumar Patel
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Patent number: 10784797Abstract: A power conversion system includes a controller that generates switching control signals according to duty cycles for a current switching control cycle, and adjusts the duty cycles by a non-zero offset value according to a modulation index in response to the modulation index exceeding a non-zero threshold. A method includes computing first duty cycles according to a modulation index, generating a plurality of switching control signals according to the first duty cycles in response to the modulation index being less than or equal to a non-zero threshold, computing second duty cycles offset from the first duty cycles and generating the plurality of switching control signals according to the second duty cycles in response to the modulation index exceeding the non-zero threshold.Type: GrantFiled: June 19, 2019Date of Patent: September 22, 2020Assignee: Rockwell Automation Technologies, Inc.Inventors: Willy E. Sedano, Peizhong Yi, Brian P. Brown, Lixiang Wei
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Publication number: 20180145602Abstract: Motor drive power conversion systems, including a filter circuit with a single inductor and a capacitor for each input phase, an active rectifier with silicon carbide rectifier switching devices and no precharge circuitry, a DC bus circuit with a film DC bus capacitor, an inverter to drive a load, and a controller to operate the rectifier switching devices at a PWM rectifier switching frequency of 10 kHz or more.Type: ApplicationFiled: January 3, 2018Publication date: May 24, 2018Applicant: Rockwell Automation Technologies, Inc.Inventors: Lixiang Wei, Peizhong Yi, Andrew Joseph Roberts, Robert Allen Savatski
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Patent number: 9825560Abstract: An interleaved bridgeless power factor correction (PFC) converter-based motor drive system is provided. The system includes a first inductor coupled to a second inductor. The coupled first and second inductors are coupled to a first input configured to be coupled to a first line of an alternating current (AC) power supply. The system also includes a third inductor coupled to a fourth inductor. The coupled third and fourth inductors are coupled to a second input configured to be coupled to a second line of the AC power supply. The system further includes a digital active power factor correction (PFC) controller configured to cause current in at least one of the coupled first and second inductors and the coupled third and fourth inductors to be interleaved.Type: GrantFiled: September 17, 2014Date of Patent: November 21, 2017Assignee: Regal Beloit America, Inc.Inventors: Ming Li, Peizhong Yi, Roger Carlos Becerra, Ludovic Andre Chretien
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Patent number: 9806626Abstract: An electric motor controller and methods of determining which input power line of a plurality of input power lines of a motor drive controller has been energized are provided. An electric motor controller configured to be coupled to an electric motor includes a plurality of power input lines configured to receive an alternating current (AC) input voltage from an AC power source, an energized line detection device configured to sense that a power input line has been energized by the AC power source, and configured to output an isolated signal, and a rectifier configured to convert the AC input voltage having a frequency to a direct current (DC) voltage. The controller also includes a computing device coupled downstream from the energized line detection device and configured to determine which input power line has been energized.Type: GrantFiled: May 6, 2014Date of Patent: October 31, 2017Assignee: Regal Beloit America, Inc.Inventors: Roger Carlos Becerra, Ludovic Andre Chretien, Yao Da, Peizhong Yi, Lester Benjamin Manz
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Patent number: 9331614Abstract: A motor controller is provided that includes an inverter configured to drive an electric motor, a rectifier configured to rectify an alternating current (AC) input current and to output the rectified AC input current to the inverter, and a controller coupled to the inverter. The controller is configured to improve a power factor of the motor controller by controlling the AC input current based on a direct current (DC) link voltage measurement.Type: GrantFiled: February 8, 2013Date of Patent: May 3, 2016Assignee: Regal Beloit America, Inc.Inventors: Roger Carlos Becerra, Yao Da, Ludovic Andre Chretien, Peizhong Yi
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Publication number: 20160079888Abstract: An interleaved bridgeless power factor correction (PFC) converter-based motor drive system is provided. The system includes a first inductor coupled to a second inductor. The coupled first and second inductors are coupled to a first input configured to be coupled to a first line of an alternating current (AC) power supply. The system also includes a third inductor coupled to a fourth inductor. The coupled third and fourth inductors are coupled to a second input configured to be coupled to a second line of the AC power supply. The system further includes a digital active power factor correction (PFC) controller configured to cause current in at least one of the coupled first and second inductors and the coupled third and fourth inductors to be interleaved.Type: ApplicationFiled: September 17, 2014Publication date: March 17, 2016Inventors: MING LI, Peizhong Yi, Roger Carlos Becerra, Ludovic Andre Chretien
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Publication number: 20150326152Abstract: An electric motor controller and methods of determining which input power line of a plurality of input power lines of a motor drive controller has been energized are provided. An electric motor controller configured to be coupled to an electric motor includes a plurality of power input lines configured to receive an alternating current (AC) input voltage from an AC power source, an energized line detection device configured to sense that a power input line has been energized by the AC power source, and configured to output an isolated signal, and a rectifier configured to convert the AC input voltage having a frequency to a direct current (DC) voltage. The controller also includes a computing device coupled downstream from the energized line detection device and configured to determine which input power line has been energized.Type: ApplicationFiled: May 6, 2014Publication date: November 12, 2015Applicant: Regal Beloit America, Inc.Inventors: ROGER CARLOS BECERRA, Ludovic Andre Chretien, Yao Da, Peizhong Yi, Lester Benjamin Manz
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Publication number: 20140225545Abstract: A motor controller is provided that includes an inverter configured to drive an electric motor, a rectifier configured to rectify an alternating current (AC) input current and to output the rectified AC input current to the inverter, and a controller coupled to the inverter. The controller is configured to improve a power factor of the motor controller by controlling the AC input current based on a direct current (DC) link voltage measurement.Type: ApplicationFiled: February 8, 2013Publication date: August 14, 2014Applicant: Regal Beloit America, Inc.Inventors: Roger Carlos Becerra, Yao Da, Ludovic Andre Chretien, Peizhong Yi