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公开(公告)号：US20230063593A1
公开(公告)日：2023-03-02
申请号：US17885161
申请日：2022-08-10
发明人： Nageswara Rao Kalluri , Pravinsharma Kaliyannan Eswaran , Sridhar Katakam , Surendra Somasekhar Valleru , Ashish Vijay
摘要： A motor speed monitoring system can include a monitor channel having an input configured to connect to an inverter output of an inverter to receive motor command signals from the inverter, and an intelligence module configured to determine a motor speed based on the motor power signals from the inverter.
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公开(公告)号：US20230341274A1
公开(公告)日：2023-10-26
申请号：US17846059
申请日：2022-06-22
发明人： Rajkumar Perumal , Nageswara Rao Kalluri , Pravinsharma Kaliyannan Eswaran , Sridhar Katakam , Surendra Somasekhar Valleru
摘要： A resistance temperature detector includes a single channel analog to digital converter (ADC) comprising a first channel input and a reference voltage input. The detector also includes a resistance temperature detector (RTD) element connected to the first channel input and a current sense element in series with the RTD element. The current sense element is connected to the reference voltage input. The detector also includes a power source connected to the RTD element and a controller configured to: receive an output of the single channel ADC to determine a temperature at the RTD element. The output of the single channel ADC comprises a bit representation of a ratio between a first voltage across the RTD element and a reference voltage across the current sense element.
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公开(公告)号：US20230333192A1
公开(公告)日：2023-10-19
申请号：US18133930
申请日：2023-04-12
发明人： Rajkumar Perumal , Nageswara Rao Kalluri , Sridhar Katakam , Pravinsharma Kaliyannan Eswaran , Surendra Somasekhar Valleru
CPC分类号： G01R35/005 , G01R31/2851
摘要： A circuit calibration system can include a calibration voltage source, a calibration output line, and a variable voltage system connected between the calibration voltage source and the calibration output line. The variable voltage system can be configured to provide a variable calibration voltage to the calibration output line.
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公开(公告)号：US11791715B2
公开(公告)日：2023-10-17
申请号：US17178953
申请日：2021-02-18
摘要： An intelligent architecture system is provided. The intelligent architecture system includes an input line, an output line and an intelligent architecture operably interposed between the input line and the output line. The intelligent architecture is configured to control a voltage of the output line in accordance with a voltage of the input line.
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公开(公告)号：US12074526B2
公开(公告)日：2024-08-27
申请号：US17885157
申请日：2022-08-10
发明人： Nageswara Rao Kalluri , Sridhar Katakam , Surendra Somasekhar Valleru , Rajkumar Perumal , Pravinsharma Kaliyannan Eswaran
CPC分类号： H02M3/33584 , H02M3/33515 , H02M5/4585 , H02P27/08
摘要： A holdup energy arrangement can include a motor control module configured to connect to motor power electronics to operate an inverter to control a motor. The motor control module can operate at a lower voltage than the motor power electronics. The arrangement can include a power supply operatively connected to the motor control module and configured to provide power the motor control module and a converter operatively connected to the power supply and configured to be electrically connected to a DC link capacitor of the motor power electronics. The arrangement can also include a logic control module configured to control the converter to selectively allow energy to flow from the DC link capacitor, through the converter, and to the power supply to provide holdup energy to the power supply with energy from the DC link capacitor.
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公开(公告)号：US20240088891A1
公开(公告)日：2024-03-14
申请号：US18222620
申请日：2023-07-17
发明人： Nageswara Rao Kalluri , Rajkumar Perumal , Sridhar Katakam , Surendra Somasekhar Valleru , Pravinsharma Kaliyannan Eswaran
摘要： A switch control system includes a first voltage source configured to output a first source voltage on a first voltage line. The system includes a first gate driver, a second gate driver, a third gate driver, and a fourth gate driver. Each of the gate drivers includes shoot through protection (STP) configured to prevent a first switch and a second switch of the system from ever both being closed at once thereby preventing shoot voltages from a DC bus to ground through the first and second switches.
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公开(公告)号：US20230305041A1
公开(公告)日：2023-09-28
申请号：US17749220
申请日：2022-05-20
发明人： Nageswara Rao Kalluri , David Frederick Brookes , Sridhar Katakam , Surendra Somasekhar Valleru , Pravinsharma Kaliyannan Eswaran
CPC分类号： G01R19/0038 , H03K5/24
摘要： A voltage measurement system and method is provided. Aspects include a comparator having a positive and a negative input terminal, a processor configured to supply a reference voltage signal to the negative input terminal, wherein the positive input terminal receives an input voltage, setting the reference voltage signal to a zero voltage signal, determine a line frequency of the input voltage based on a timing signal from the comparator and determining a first pulse width of the input signal based on the timing signal, set the reference voltage to a PWM signal with a fixed duty cycle, receive the timing signal from the output of the comparator, determine a rising edge and a falling edge associated with the input voltage based on the timing signal, and determine a peak value of the input voltage based on a second pulse width between the rising and falling edge.
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公开(公告)号：US20230063094A1
公开(公告)日：2023-03-02
申请号：US17885157
申请日：2022-08-10
发明人： Nageswara Rao Kalluri , Sridhar Katakam , Surendra Somasekhar Valleru , Rajkumar Perumal , Pravinsharma Kaliyannan Eswaran
摘要： A holdup energy arrangement can include a motor control module configured to connect to motor power electronics to operate an inverter to control a motor. The motor control module can operate at a lower voltage than the motor power electronics. The arrangement can include a power supply operatively connected to the motor control module and configured to provide power the motor control module and a converter operatively connected to the power supply and configured to be electrically connected to a DC link capacitor of the motor power electronics. The arrangement can also include a logic control module configured to control the converter to selectively allow energy to flow from the DC link capacitor, through the converter, and to the power supply to provide holdup energy to the power supply with energy from the DC link capacitor.
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公开(公告)号：US20240264208A1
公开(公告)日：2024-08-08
申请号：US18348440
申请日：2023-07-07
IPC分类号： G01R19/165 , G01R15/04
CPC分类号： G01R19/16576 , G01R15/04
摘要： A voltage monitor for a fly-back circuit. The circuit includes a voltage source, a transformer comprising a primary winding electrically coupled to the voltage source and a secondary winding electrically coupled to a load, a diode connected between the secondary winding and the load, a switch electrically coupled to the primary winding and a controller operable to open and close the switch to control energy transfer from the primary winding to the secondary winding. The voltage monitor is connected to a node between the secondary winding and the diode that generates an output signal that is a toggling output when the voltage source is operating above an input voltage threshold and a constant output when the voltage source is operating below the input voltage threshold.
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公开(公告)号：US20230344426A1
公开(公告)日：2023-10-26
申请号：US18135676
申请日：2023-04-17
发明人： Pravinsharma Kaliyannan Eswaran , Nageswara Rao Kalluri , Surendra Somasekhar Valleru , Sridhar Katakam , Rajkumar Perumal
IPC分类号： H03K17/567 , H03K17/687
CPC分类号： H03K17/567 , H03K17/687 , H02P27/06
摘要： A switch control system can include a voltage source configured to output a source voltage on a voltage line, and a first gate driver connected to a gate control signal line to receive a gate control signal from a controller. The first gate driver can be connected to the voltage line to receive the source voltage, and the first gate driver can be connected to a first terminal line to output a first gate voltage signal to a first terminal of a switch. The system can include an inverter connected to the gate control signal line configured to receive the gate control signal and output an inverted gate control signal. The system can include a second gate driver connected to the inverter to receive the inverted gate control signal from the inverter. The second gate driver can be connected to the voltage line to receive the source voltage, and the second gate driver can be connected to a second terminal line to output a second gate voltage signal to a second terminal of a switch.
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