公开(公告)号：US12039232B2

公开(公告)日：2024-07-16

申请号：US17134030

申请日：2020-12-24

Applicant: Industrial Technology Research Institute

Inventor： Chun-An Lin ,  Wen-Che Shen ,  Chih-Wei Yeh ,  Po-Huan Chou ,  Chun-Chieh Chang ,  Yu-Hsun Wu

IPC: H03M3/00 ,  G01R19/00 ,  G01R29/02 ,  G06F30/20 ,  G06F30/30 ,  H03M1/66

CPC classification number: G06F30/20 ,  G01R19/0084 ,  G01R29/023 ,  G06F30/30 ,  H03M1/66

Abstract: A hardware-in-the-loop (HIL) simulation device is provided, which includes a processing circuit and a pulse-width modulation (PWM) signal observation circuit. The PWM signal observation circuit includes an energy storage unit and the energy storage unit is coupled to the processing circuit. A signal source transmits a PWM signal to the processing circuit and the PWM signal observation circuit, and the energy storage unit is charged when the PWM signal is at high level. The processing circuit detects the voltage of the energy storage unit when detecting the falling edge of the PWM signal so as to calculate the duty cycle of the PWM signal.

公开(公告)号：US11658599B1

公开(公告)日：2023-05-23

申请号：US17548617

申请日：2021-12-13

Applicant: Industrial Technology Research Institute

Inventor： Wen-Che Shen ,  Cheng-Min Chang ,  Chun-Chieh Chang ,  Po-Huan Chou

IPC: H02P27/08 ,  G01R15/04 ,  G01R19/00 ,  H02M7/5387

CPC classification number: H02P27/08 ,  G01R15/04 ,  G01R19/0007 ,  H02M7/53871

Abstract: A voltage measurement device for pulse-width modulation (PWM) signals is provided, which includes a conversion circuit and a processing circuit. The conversion circuit receives a first PWM signal and a second PWM signal from a motor driving device, and converts the first PWM signal and the second PWM signal into the absolute value signal and the polarity signal of the line-to-line voltage signal between the first PWM signal and the second PWM signal. The processing circuit converts the polarity signal and the absolute value signal into a first integral signal and a second integral signal, and reconstructs the line-to-line voltage signal according to the first integral signal and the second integral signal so as to obtain the reconstructed voltage signal of the line-to-line voltage signal.

公开(公告)号：US11381157B1

公开(公告)日：2022-07-05

申请号：US17117246

申请日：2020-12-10

Applicant: Industrial Technology Research Institute

Inventor： Cheng-Min Chang ,  Chun-Chieh Chang ,  Hsi-Chih Chang ,  Po-Huan Chou

IPC: H02M1/38 ,  H02M3/158

Abstract: A motor drive is provided, which includes a control circuit, a first transistor, a first comparison circuit, a second transistor and a load. The control circuit includes a first output terminal and a second output terminal; the first output terminal outputs a first control signal; the second output terminal outputs a second control signal whose phase is inverse to the phase of the first control signal. The gate of the first transistor receives the first control signal. The first comparison circuit compares the gate-source voltage with a reference voltage to generate a first comparison signal. When the first comparison signal shows that the first control signal is reduced to be lower than the reference voltage, the second control signal generated by the second output terminal is transmitted to the gate of the second transistor.