Results 11 to 20 of about 817,771 (190)
Rotor Misalignment Detection using a Wireless Sensor and a Shaft Encoder [PDF]
, 2010 Mechanical systems such as motors, pumps, engines, and turbine are all operating based on different shafts. Due to unexpected operating conditions, various faults such as cross-sectional cracks, looseness and misalignment may occur during their service ...
Gu, Fengshou, Ball, Andrew, Arebi, Lufti
core +4 more sources
Equilibrium mechanism between dc voltage and ac frequency for ac–dc interlinking converters
iEnergy, 2022 The equilibrium between dc bus voltage and ac bus frequency (Udc-f equilibrium) is the algorithm core of unified control strategies for ac-dc interlinking converters (ILCs), because the equilibrium implements certain mechanism.
Haixu Shi +4 more
doaj +1 more source
Challenges of Large Converter-Fed Synchronous Machines for Variable-Speed Pumped Hydro Storage
Energies, 2023 The green energy transition of electrical energy production is leading to an increasing share of total energy production for volatile renewable energy sources, mainly wind and solar power. To handle this volatile production, flexible and efficient energy
Stefan Polster +4 more
doaj +1 more source
Investigation of a Rotating Shaft with a Novel Integrated Wireless Accelerometer [PDF]
, 2010 Rotating shafts are the most critical components of rotating machines such as motors, pumps, engines and turbines. Due to their heavy workloads, defects are more likely to develop during operation.
Gu, Fengshou +3 more
core +4 more sources
Analysis, calculation and reduction of shaft voltage in induction generators [PDF]
, 2009 This paper presents analysis of shaft voltage in different configurations of a Doubly Fed Induction Generator (DFIG) and an Induction Generator (IG) with a back-to-back inverter in wind turbine applications.
Adabi Firouzjaee, Jafar +3 more
core +1 more source
Energies, 2020 Adjustable speed drives use Pulse Width Modulation (PWM) to switch DC-bus voltage for the synthesis of three-phase voltages to provide power to the permanent magnet synchronous motor (PMSM).
Muhammad Aqil, Jun-Hyuk Im, Jin Hur
doaj +1 more source
Different approaches to reduce shaft voltage in AC generators [PDF]
, 2009 This paper presents several shaft voltage reduction techniques for doubly-fed induction generators in\ud wind turbine applications. These techniques includes: pulse width modulated voltage without zero\ud vectors, multi-level inverters with proper PWM ...
Adabi Firouzjaee, Jafar, Zare, Firuz
core +2 more sources
Method of Limiting Shaft Voltages in AC Electric Machines
Energies, 2021 The article presents a new method of counteracting shaft voltages and currents in AC electrical machines. It is based on the use of an auxiliary winding located in the stator of the machine.
Sebastian Berhausen, Tomasz Jarek
doaj +1 more source
End effects in linear tubular motors and compensated position sensorless control based on pulsating voltage injection [PDF]
, 2011 The sensorless position control of permanent-magnet (PM) synchronous motors can be successfully implemented by superimposing a high-frequency voltage signal on the control voltage.
CUPERTINO, Francesco +9 more
core +1 more source
Motor Bearing Damage Induced by Bearing Current: A Review
Machines, 2022 The occurrence of the motor shaft voltage and bearing current caused by the inverter will aggravate bearing damage and lead to the premature failure of bearings.
Jiaojiao Ma +4 more
doaj +1 more source