Results 241 to 250 of about 205,989 (300)

Corrosion Performance and Post-Corrosion Evolution of Tensile Behaviors in Rebar Reinforced Ultra-High Performance Concrete. [PDF]

Materials (Basel)
Zhang Y, Zhang S, Luo X, Wang C.
europepmc   +1 more source

Triboelectric Capacitance Supplementation in Energy Storage Composites with Functionalized Carbon Fiber Electrodes. [PDF]

Small
Simon Ž, Dharmasiri B, Leon RT, Newman B, Mokhtari F, Coia P, Austria ES, Akhavan B, Sherrell PC, Ellis AV, Varley RJ, Henderson LC.   +11 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Modeling of Bearing Voltage in Electric Machines Based on Electromagnetic FEA and Measured Bearing Capacitance

IEEE Transactions on Industry Applications, 2021
Bearing voltages and associated bearing currents in electric machines driven by pulsewidth modulation converters with high switching frequencies and high $dv/dt$ can cause premature bearing failures. This article proposes a new modeling approach for the prediction of steady-state and transient bearing voltages based on two-dimensional (2-D ...
Peng Han, Greg Heins, Dean Patterson, Mark Thiele, Dan M. Ionel   +4 more
openaire   +3 more sources

Frequency-Dependent Bearing Voltage Model for Squirrel-Cage Induction Motors

IEEE Transactions on Industrial Electronics, 2022
This work describes a frequency-dependent bearing voltage model for squirrel-cage induction motors. Previous researches related to bearing voltages commonly considered the bearing voltage ratio (BVR) as a constant. However, it is important to analyze the frequency-dependent behavior of BVR when dealing with systems excited by high switching frequency ...
Manje Yea, Jingook Kim, Ki Jin Han
openaire   +4 more sources

Motor shaft voltages and bearing currents and their reduction in multilevel medium-voltage PWM voltage-source-inverter drive applications

IEEE Transactions on Industry Applications, 2000
This paper presents test results on problems and solutions of motor shaft voltages and bearing currents in medium-voltage pulsewidth modulated (PWM) drive systems. Tests show that multilevel medium-voltage PWM voltage-source inverter drives can cause motor bearing currents, similar to a low-voltage PWM drives, even with one motor bearing insulated ...
Fei Wang
openaire   +3 more sources

Feedback linearization of an active magnetic bearing with voltage control

IEEE Transactions on Control Systems Technology, 2002
A feedback linearization controller is presented for a single-degree-of-freedom (DOF) magnetic bearing test rig. The feedback linearization controller is derived from a detailed nonlinear electromagnet model using both analytic relationships and experimental calibration data.
J.D. Lindlau, C.R. Knospe
openaire   +3 more sources

Suppressing Bearing Voltage in an Inverter-Fed Ungrounded Brushless DC Motor

IEEE Transactions on Industrial Electronics, 2013
This paper describes the bearing voltage reduction achieved by the brushless dc motor for air conditioning driven by the voltage source inverter. First, the simplified equivalent circuit of the brushless dc motor is derived based on the common-mode equivalent circuit where stray capacitance is taken into account.
Tatsuo Maetani, Yoshinori Isomura, Akihiko Watanabe, Kenichi Iimori, Shigeo Morimoto   +4 more
openaire   +3 more sources

Electric damage of bearing under AC shaft voltage at different rotation speeds

Tribology International, 2023
Niu Kai, Song Chenfei, Lou Zhihao, Pang Xianjuan, Lu Huanhuan, Du Sanming, Zhang Yongzhen   +6 more
openaire   +3 more sources