公开(公告)号：US20240113639A1

公开(公告)日：2024-04-04

申请号：US18195192

申请日：2023-05-09

Applicant: Delta Electronics, Inc.

Inventor： Kuo-Heng Chao ,  Chia-Hsiang Chuang

IPC: H02M7/5395 ,  H02M1/00 ,  H02M7/5387 ,  H02P27/08

CPC classification number: H02M7/5395 ,  H02M1/0022 ,  H02M7/53873 ,  H02P27/08

Abstract: A power conversion circuit for driving motor and a control method thereof are provided. The control method includes: comparing a control command with a carrier wave to acquire a PWM signal; identifying whether a phase difference between the output voltage and current falls within a range; if the phase difference falling within the range, determining whether a zero-sequence voltage is positive or negative according to the output voltage and current; injecting the zero-sequence voltage into the control command to acquire a synthesized command, and detecting maximum and minimum voltage values of the synthesized command after a period; according to the zero-sequence voltage determined to be positive or negative, selecting the maximum or minimum voltage value to perform a logic reversal operation; after stopping injecting the zero-sequence voltage, acquiring an output expected value; and comparing the output expected value with the carrier wave for adjusting a duty ratio of PWM signal.

公开(公告)号：US12044766B2

公开(公告)日：2024-07-23

申请号：US17840542

申请日：2022-06-14

Applicant: Delta Electronics, Inc.

Inventor： Kuo-Heng Chao ,  Chia-Hsiang Chuang ,  Ming-Jen Chao

IPC: G01R31/28 ,  G01R19/00 ,  G01R35/00 ,  H02H1/00 ,  H02H3/04 ,  H02H3/10 ,  H02H7/08 ,  H02K11/33 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06 ,  H03K17/081 ,  H03K17/687 ,  H02P6/182

CPC classification number: G01R35/00 ,  G01R19/0038 ,  G01R31/2837 ,  G01R31/2839 ,  H02H1/0007 ,  H02H3/044 ,  H02H3/10 ,  H02H7/08 ,  H02K11/33 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06 ,  H03K17/08104 ,  H03K17/687 ,  H02P6/182

Abstract: The present disclosure a program burning device configured to read or write to a program burning interface. The program burning device includes a microprocessor, a programming drive circuit and an overcurrent protection circuit. The microprocessor outputs a first test signal or a second test signal. The programming drive circuit outputs a high driving voltage or a low driving voltage to the program burning interface. After the programming drive circuit outputs the low driving voltage for a preset time, the programming drive circuit outputs the high driving voltage to make the program burning interface form a high impedance. Afterwards, the overcurrent protection circuit receives the first test signal to trigger the overcurrent protection, and then receives the second test signal to trigger the undercurrent protection. If triggering the overcurrent protection and the undercurrent protection are continuously failed over a preset number of times, the microprocessor determines that current protection is failed.

公开(公告)号：US20230121422A1

公开(公告)日：2023-04-20

申请号：US17837741

申请日：2022-06-10

Applicant: Delta Electronics,inc.

Inventor： Kuo-Heng Chao ,  Chia-Hsiang Chuang

IPC: G01R35/00 ,  G01R19/00 ,  H02H7/08

Abstract: The present disclosure provides a troubleshooting system for current sensors including a motor, three current sensors and a controller. The three current sensors respectively sense three phase currents of the three-phase current of the motor to obtain three current sensing values. The controller is configured to control the three-phase current of the motor. When the sum of the three current sensing values is greater than a threshold, the controller controls the three phase currents to be zero, and a first offset sensor and a current offset are obtained. When the sum of the three current sensing values equals the current offset, a second offset sensor is obtained. If the first offset sensor and the second offset sensor are the same current sensor, the controller outputs a warning signal, if the first offset sensor and the second offset sensor are different current sensors, the controller controls the motor to stop operating.

公开(公告)号：US12105176B2

公开(公告)日：2024-10-01

申请号：US17837741

申请日：2022-06-10

Applicant: Delta Electronics, Inc.

Inventor： Kuo-Heng Chao ,  Chia-Hsiang Chuang

IPC: G01R35/00 ,  G01R19/00 ,  G01R31/28 ,  H02H1/00 ,  H02H3/04 ,  H02H3/10 ,  H02H7/08 ,  H02K11/33 ,  H02P6/182 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06 ,  H03K17/081 ,  H03K17/687

CPC classification number: G01R35/00 ,  G01R19/0038 ,  G01R31/2837 ,  G01R31/2839 ,  H02H1/0007 ,  H02H3/044 ,  H02H3/10 ,  H02H7/08 ,  H02K11/33 ,  H02P6/20 ,  H02P6/24 ,  H02P27/06 ,  H03K17/08104 ,  H03K17/687 ,  H02P6/182

Abstract: The present disclosure provides a troubleshooting system for current sensors including a motor, three current sensors and a controller. The three current sensors respectively sense three phase currents of the three-phase current of the motor to obtain three current sensing values. The controller is configured to control the three-phase current of the motor. When the sum of the three current sensing values is greater than a threshold, the controller controls the three phase currents to be zero, and a first offset sensor and a current offset are obtained. When the sum of the three current sensing values equals the current offset, a second offset sensor is obtained. If the first offset sensor and the second offset sensor are the same current sensor, the controller outputs a warning signal, if the first offset sensor and the second offset sensor are different current sensors, the controller controls the motor to stop operating.

公开(公告)号：US20230123922A1

公开(公告)日：2023-04-20

申请号：US17840542

申请日：2022-06-14

Applicant: Delta Electronics, Inc.

Inventor： Kuo-Heng Chao ,  Chia-Hsiang Chuang ,  Ming-Jen Chao

IPC: G01R31/28 ,  H02H1/00 ,  H02H3/10 ,  H02H3/04

Abstract: The present disclosure a program burning device configured to read or write to a program burning interface. The program burning device includes a microprocessor, a programming drive circuit and an overcurrent protection circuit. The microprocessor outputs a first test signal or a second test signal. The programming drive circuit outputs a high driving voltage or a low driving voltage to the program burning interface. After the programming drive circuit outputs the low driving voltage for a preset time, the programming drive circuit outputs the high driving voltage to make the program burning interface form a high impedance. Afterwards, the overcurrent protection circuit receives the first test signal to trigger the overcurrent protection, and then receives the second test signal to trigger the undercurrent protection. If triggering the overcurrent protection and the undercurrent protection are continuously failed over a preset number of times, the microprocessor determines that current protection is failed.