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公开(公告)号：US20240052825A1
公开(公告)日：2024-02-15
申请号：US18265942
申请日：2021-12-08
申请人： Intex Marketing Ltd.
发明人： Zhi Xiong Huang , Ying Biao Zhang
摘要： A voltage regulation and speed regulation control circuit (100, 130, 200, 250) of an air pump (102) is provided. The voltage regulation and speed regulation control circuit (100, 130, 200, 250) may comprise a chopper power supply circuit (104, 202), a full bridge rectifier circuit (106, 204) and a switch (108, 212). The switch (108, 212) may be used to switch the chopper power supply circuit (104, 202) or the full bridge rectifier circuit (106, 204) to be connected to the positive and negative input terminals (103, 105) of the air pump (102). The output voltage of the chopper power supply circuit (104, 202) and the output voltage of the full bridge rectifier circuit may be different (106, 204).
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公开(公告)号：US11552583B2
公开(公告)日：2023-01-10
申请号：US17144485
申请日：2021-01-08
发明人： Andrew J. Benn
IPC分类号： H02P1/00 , H02P7/292 , B60L50/60 , B60L53/62 , B60L53/24 , B60L58/10 , B60L15/20 , B64D27/24 , B64D31/00 , H02P3/14
摘要： A drive system comprises a DC-DC converter that is arranged to receive an input voltage from a battery having a nominal battery voltage. The DC-DC converter has a first mode of operation in which the DC-DC converter generates a regulated output voltage from the input voltage and supplies the regulated output voltage to a load, and a second mode of operation in which the DC-DC converter is by-passed such that the input voltage from the battery is supplied to the load. A controller is arranged to compare the input voltage to a threshold voltage that is less than the nominal battery voltage. The controller operates the DC-DC converter in the first mode when the input voltage is less than the threshold voltage, and operates the DC-DC converter otherwise.
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公开(公告)号：US20220329067A1
公开(公告)日：2022-10-13
申请号：US17714200
申请日：2022-04-06
申请人： AISIN CORPORATION
发明人： Yutaka UCHIDA , Takanori SUZUKI , Kohei YAMAZAKI
摘要： A motor power supply device includes a first power supply, a motor driven by a power supplied from the first power supply, a first power supply line, a first power supply side semiconductor switch, a first output side semiconductor switch, a first power supply side voltage detection unit disposed on a first power supply side with respect to the first power supply side semiconductor switch on the first power supply line and configured to detect a voltage of the first power supply line, and a control unit configured to execute control to determine a state of power supply from the first power supply to the first power supply side semiconductor switch based on a measured value obtained by the first power supply side voltage detection unit.
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公开(公告)号：US11271489B2
公开(公告)日：2022-03-08
申请号：US16344370
申请日：2017-11-09
申请人： Nidec Corporation
发明人： XiaoXia Sun , Haruki Kitakawa , Takashi Togawa
摘要： An alternating-current (AC)—direct-current (DC) power supply includes a circuit board including an alternating-current input terminal to which an alternating current is input and a direct-current output terminal from which a direct current is output. The AC-DC power supply includes a diode bridge that rectifies the alternating current input via the alternating-current input terminal, an alternating-current input line that electrically connects the alternating-current input terminal and the diode bridge, a coil connected to the diode bridge, a diode connected to the direct-current output terminal, a switching line that electrically connects the coil and the diode, and a switching element connected to the switching line. A portion of the switching line is disposed at right angles to a portion of the alternating-current input line.
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公开(公告)号：US11235668B1
公开(公告)日：2022-02-01
申请号：US17367913
申请日：2021-07-06
申请人： Zhejiang University
发明人： Yao Zheng , Junyin Chen , Changping Du , Guanghua Song , Rui Yang , Zhixian Ye , Zekun Zhang
摘要： The present disclosure provides an efficient control system and method for a brushless motor with a wide working range, which are applied to an aerospace vehicle energy system. The system of the present disclosure includes a power supplying module, a first DC-DC circuit, a battery pack, a second DC-DC circuit, an anti-reverse-connection circuit, an electronic speed control (ESC), a brushless direct current motor (BLDC), an airborne controller and a communication link. Electric energy from the power supplying module is configured to charge the battery pack via the first DC-DC circuit, and electric energy of the battery pack sequentially flows through the second DC-DC circuit and the anti-reverse-connection circuit to energize the ESC, wherein output voltage of the second DC-DC circuit and throttle signal input of the ESC are controlled in real time by the airborne controller according to a power demand of an aircraft.
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公开(公告)号：US20210320599A1
公开(公告)日：2021-10-14
申请号：US17144485
申请日：2021-01-08
发明人： Andrew J. BENN
IPC分类号： H02P7/292 , H02P3/14 , B64D27/24 , B64D31/00 , B60L15/20 , B60L50/60 , B60L53/24 , B60L53/62 , B60L58/10
摘要： A drive system comprises a DC-DC converter that is arranged to receive an input voltage from a battery having a nominal battery voltage. The DC-DC converter has a first mode of operation in which the DC-DC converter generates a regulated output voltage from the input voltage and supplies the regulated output voltage to a load, and a second mode of operation in which the DC-DC converter is by-passed such that the input voltage from the battery is supplied to the load. A controller is arranged to compare the input voltage to a threshold voltage that is less than the nominal battery voltage. The controller operates the DC-DC converter in the first mode when the input voltage is less than the threshold voltage, and operates the DC-DC converter otherwise.
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公开(公告)号：US11018605B2
公开(公告)日：2021-05-25
申请号：US16612424
申请日：2018-05-08
申请人： L7 Drive Oy
发明人： Daniel Salonen
摘要： According to an example aspect of the present invention, there is provided a DC to DC converter module for use between an electric power source and an electric motor. The DC to DC converter module having: a DC to DC converter; input terminals configured to provide a source voltage to the DC to DC converter from the electric power source; output terminals connected to outputs of the DC to DC converter and configured to provide an output voltage of the DC to DC converter module to the electric motor; and control circuitry connected to the DC to DC converter, the control circuitry having an input for receiving a signal indicative of a desired electric motor performance. The control circuitry being configured to control the DC to DC converter in order to adjust the output voltage based at least partially on the signal indicative of a desired electric motor performance.
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公开(公告)号：US10944343B2
公开(公告)日：2021-03-09
申请号：US16508502
申请日：2019-07-11
发明人： Ruifeng Qin , Kwokkuen Tse , Tao Qu
摘要： An actuator for a cooling fan module includes a controller, a first motor and a second motor. The controller includes a controlling unit configured to receive control commands, and a motor driving unit electrically connected to the controlling unit and powered by a DC power supply. The first motor is electrically connected to the motor driving unit. The second motor is connected in parallel to the first motor. The first motor and the second motor are synchronously driven and controlled by the controller.
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公开(公告)号：US20200235685A1
公开(公告)日：2020-07-23
申请号：US16747885
申请日：2020-01-21
发明人： Takaaki GYOTEN
摘要： An actuator driving device includes: first and second half bridge circuits driven according to modulated drive signals having an inverted relationship, generates a drive voltage for an actuator by switching a DC voltage, and outputs the drive voltage to the actuator; a current detection resistor which generates a current detection signal corresponding to current flowing through a series circuit including first and second switching elements and a series circuit including third and fourth switching elements; a hold circuit which holds the current detection signal from the current detection resistor and generates an output signal; a comparator which compares the output signal with a target amplitude signal to generate a comparison result signal; a multiplier which multiplies the comparison result signal and the drive signal to generate a multiplication result signal; and a PWM modulator which performs PWM modulation according to the multiplication result signal to generate a modulated drive signal.
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公开(公告)号：US20190326838A1
公开(公告)日：2019-10-24
申请号：US16391773
申请日：2019-04-23
申请人： Graco Minnesota Inc.
发明人： Matthew P. Dion , Joseph A. Daniski
摘要： A pressurizer for building pressure of a fluid in a vessel includes a pump, a motor, a controller, and a transducer. The pump has an outlet disposed to deliver the fluid to the vessel. The motor is configured to drive the pump according to a pulse-width modulated (PWM) drive signal, and the controller is configured to deliver the PWM drive signal to the motor. The transducer is configured to generate a pressure signal indicative of a pressure of the fluid at the outlet, and to deliver the pressure signal to the controller. The controller is configured to adjust a duty cycle of the PWM drive signal based on the pressure signal.
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