Zobrazeno 1 - 10
of 266
pro vyhledávání: '"Geun-Ho Lee"'
Publikováno v:
IEEE Access, Vol 11, Pp 119330-119341 (2023)
In permanent magnet synchronous motors, a resolver to digital converter (RDC) is used to determine the position of a rotor with a resolver. Moreover, RDCs can be used to position rotors through resolver signals. However, such processes require signif
Externí odkaz:
https://doaj.org/article/c3ba4930b382435f866155b95197bff9
Publikováno v:
IEEE Access, Vol 11, Pp 19428-19440 (2023)
In permanent magnet motors, the stator resistance and magnetic flux of the magnet change as the temperature increases. These changes result in a change in the maximum torque point per unit ampere (MTPA) of the motor. Without adequate compensation, th
Externí odkaz:
https://doaj.org/article/5fcc6c62c0a64638ad13cda86091132a
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-13 (2022)
Abstract Wind turbines are eco-friendly energy sources that generate electricity from wind power. Among their various components, gearboxes constitute the most critical loss owing to their longest downtime. To guarantee their durability, a flexible p
Externí odkaz:
https://doaj.org/article/362ea8a8fa924b149348a3f715d22f54
Publikováno v:
IEEE Access, Vol 10, Pp 53250-53264 (2022)
This paper proposes hybrid mode control for an asymmetric dual three-phase synchronous motor (ADTP-SM) with separated neutral points in a single-phase open-fault situation. The fault-tolerant control is classified into the maximum torque mode and min
Externí odkaz:
https://doaj.org/article/9586176fbe194a9d9dd0e3d9a292a432
Publikováno v:
IEEE Access, Vol 9, Pp 160812-160822 (2021)
To detect the three-phase current in the complex plane of a DC link shunt inverter, an algorithm for restoring the current is required. In this paper, a method of dividing the detection voltage and the compensation voltage to match the output voltage
Externí odkaz:
https://doaj.org/article/fba8b8e36485460a9acd56daeb003f39
Publikováno v:
IEEE Access, Vol 8, Pp 167930-167938 (2020)
The performance of motors can vary considerably, depending not only on the design but also the manufacturing process. In particular, for motors used in systems wherein vibration and noise are important, the characteristics of the motors change accord
Externí odkaz:
https://doaj.org/article/8facb4fa75c948a09503139567c1f417
Publikováno v:
Applied Sciences, Vol 12, Iss 5, p 2326 (2022)
Recently, various studies related to the development of unmanned vehicles have been conducted around the world. In particular, unmanned ground vehicles (UGVs) and unmanned aerial vehicles (UAVs) have been developed and utilized for various purposes.
Externí odkaz:
https://doaj.org/article/963a09fe181144dca5e177d271076cc9
Publikováno v:
Applied Sciences, Vol 11, Iss 14, p 6582 (2021)
We establish a robust algorithm to analyze the influence of system uncertainties on the transmission error of a spur gear pair under 2D simplification. The algorithm provides a way of generating smooth cutter profiles with machining uncertainties and
Externí odkaz:
https://doaj.org/article/c7ccb2cf428a479d80a964a524822f13
Publikováno v:
BMC Cancer, Vol 17, Iss 1, Pp 1-8 (2017)
Abstract Background D-dimer levels have been used in the diagnosis of a variety of thrombosis-related diseases. In this study, we evaluated whether measuring D-dimer levels can help to diagnose cerebral infarction (CI) in critically ill cancer patien
Externí odkaz:
https://doaj.org/article/ba60ef73d9104e7d87f4c8e0a8d0e59c
Publikováno v:
Energies, Vol 14, Iss 10, p 2900 (2021)
Static eccentricity (SE) is frequently generated by manufacturing processes. As the nonuniformity of the air-gap length is caused by the SE, the torque ripple and cogging torque increase in the motor. This study analyzes the distorted back electromot
Externí odkaz:
https://doaj.org/article/5e29fc0492674e648623c46b2e937769