Analysis of Variable Frequency Stimulation Sacral Neuromodulation for Different Genders: A Chinese Multicentric Prospective Clinical Study
Sign Up to like & getrecommendations! Published in 2024 at "Neurourology and Urodynamics"
DOI: 10.1002/nau.25581
Abstract: Sacral neuromodulation (SNM) is widely recognized as the essential treatment modality for patients suffering from various lower urinary tract disorders, particularly overactive bladder (OAB). This prospective study recruited patients who underwent variable frequency SNM treatment… read more here.
Keywords: variable frequency; analysis variable; study; sacral neuromodulation ... See more keywords
Effects of electroacupuncture of different frequencies on electromyography, NOS and ICC of colon in rats with slow transit constipation
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Acupuncture and Tuina Science"
DOI: 10.1007/s11726-020-1151-6
Abstract: Objective To observe the effects of electroacupuncture (EA) of different frequencies on transmission function, electromyography, nitric oxide synthase (NOS) content and interstitial cells of Cajal (ICC) expression of colon in rat models with slow transit… read more here.
Keywords: frequency group; frequency; group; low frequency ... See more keywords
Investigation of efficiency models in EnergyPlus and AMCA standard 207 for induction motors powered by variable frequency drives
Sign Up to like & getrecommendations! Published in 2019 at "Energy and Buildings"
DOI: 10.1016/j.enbuild.2019.04.045
Abstract: Abstract Variable frequency drives (VFDs) are widely applied on induction motors to reduce motor electrical power under partial load conditions by adjusting both the frequency and voltage. For centrifugal fan, pump and compressor applications, a… read more here.
Keywords: frequency drives; motor; motor efficiency; variable frequency ... See more keywords
A new pump selection method for large-power PV irrigation systems at a variable frequency
Sign Up to like & getrecommendations! Published in 2018 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2018.08.071
Abstract: Abstract This paper presents a new method for selecting a pump for large-power PV irrigation systems working at a variable frequency. This can have a significant impact since the traditional way of selecting the pump… read more here.
Keywords: large power; pump; power irrigation; variable frequency ... See more keywords
Speed and torque estimation of variable frequency drives with effective values of stator currents
Sign Up to like & getrecommendations! Published in 2020 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2020.12.270
Abstract: Abstract We introduce a new method for torque and speed estimation of induction motors under voltage/frequency (V/f) open-loop control. In contrast to existing approaches that need the phase current, the proposed algorithm only requires the… read more here.
Keywords: speed torque; torque estimation; frequency; variable frequency ... See more keywords
Consensus structures of the Mo(v) sites of sulfite-oxidizing enzymes derived from variable frequency pulsed EPR spectroscopy, isotopic labelling and DFT calculations.
Sign Up to like & getrecommendations! Published in 2017 at "Dalton transactions"
DOI: 10.1039/c7dt01731f
Abstract: Sulfite-oxidizing enzymes from eukaryotes and prokaryotes have five-coordinate distorted square-pyramidal coordination about the molybdenum atom. The paramagnetic Mo(v) state is easily generated, and over the years four distinct CW EPR spectra have been identified, depending… read more here.
Keywords: frequency pulsed; spectroscopy isotopic; sulfite oxidizing; oxidizing enzymes ... See more keywords
Parametric influence and optimization of the dehumidification performance of a variable-frequency dehumidifier
Sign Up to like & getrecommendations! Published in 2024 at "Science and Technology for the Built Environment"
DOI: 10.1080/23744731.2024.2378672
Abstract: This paper optimizes a variable-frequency dehumidification system (VFDS) based on the principle of vapor compression refrigeration (VCR), wherein the compressor frequency and fan speed can be changed. The effect of the compressor frequency and fan… read more here.
Keywords: dehumidification; dehumidification performance; variable frequency; fan speed ... See more keywords
Low THD Grid Connected Converter Under Variable Frequency Environment
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2904141
Abstract: This paper is aimed at achieving unity power factor and low total harmonic distortion (THD) at the input side of a grid connected three-phase rectifier in a variable grid frequency environment. Variable grid frequency results… read more here.
Keywords: low thd; frequency; variable frequency; frequency environment ... See more keywords
Dynamic Online Grid Impedance Estimation and Its Effects on DC Capacitor Lifetime in Variable Frequency Drive
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3197894
Abstract: Grid impedance plays a significant role in the performance and design considerations of nonlinear devices like Variable Frequency Drive (VFD). VFD operates across domestic, industrial, and residential applications under different grid configurations and capacities including… read more here.
Keywords: grid impedance; lifetime; impedance; frequency drive ... See more keywords
A Review of Modeling and Mitigation Techniques for Bearing Currents in Electrical Machines With Variable-Frequency Drives
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3225119
Abstract: The converter switching in variable-frequency drives can generate high frequency common mode voltage between the machine winding and the converter ground, leading to high frequency parasitic currents which can flow through the machine bearings unless… read more here.
Keywords: bearing currents; frequency; frequency drives; variable frequency ... See more keywords
Current Control of Electrolytic Capacitor-Less Variable Frequency Drive System for Synchronous Reluctance Motors Based on Power Balancing and Compensation
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Access"
DOI: 10.1109/access.2024.3471589
Abstract: The electrolytic capacitor-less variable frequency drive scheme using film capacitors to replace electrolytic capacitors has been partially applied in the field of washing machines and air conditioners driven by permanent magnet synchronous motors, due to… read more here.
Keywords: variable frequency; reluctance motors; frequency drive; synchronous reluctance ... See more keywords