A novel method to determine the motor efficiency under variable speed operations and partial load conditions

Y Li, M Liu, J Lau, B Zhang - Applied Energy, 2015 - Elsevier
As one of the significant parameters to characterize the motor performance, motor efficiency
changes under variable speed and load conditions. Although there are many methods to …

Comparison of different fan control strategies on a variable air volume systems through simulations and experiments

G Shim, L Song, G Wang - Building and Environment, 2014 - Elsevier
Through a variable frequency drive (VFD), a variable air volume air handling system can
significantly reduce supply fan power under partial load conditions. Typically, the VFD on a …

A novel constant-air-volume range hood for high-rise residential buildings with central shaft

L Zeng, L Tong, J Gao, B Du, C Cao, L Lv, C Zhang - Energy and Buildings, 2021 - Elsevier
This study proposed a control logic for a novel constant-air-volume (CAV) range hood. The
Field Oriented Control vector was used to adjust the fan speed by comparing the current …

Investigations on a virtual airflow meter using projected motor and fan efficiencies

G Wang, L Song, E Andiroglu, G Shim - HVAC&R Research, 2014 - Taylor & Francis
Airflow measurements are not as accurate as needed in air-handling units due to space and
cost limitations of physical meters. Generally, the airflow in an air-handling unit is propelled …

Development of a virtual pump water flow meter using power derived from comprehensive energy loss analysis

E Andiroglu, G Wang, L Song… - Science and Technology …, 2016 - Taylor & Francis
Water flow rates are key controlled variables in chilled and hot water systems. The water
flow rate through a pump can be virtually determined using a measured pump head and …

Improved Estimation of Induction Motor Circuit Parameters with Published Motor Performance Data

G Wang, SW Park - 2014 Sixth Annual IEEE Green …, 2014 - ieeexplore.ieee.org
The motor equivalent circuit method provides an effective method to estimate motor
efficiency. However, the circuit parameters normally have to be determined through field …

Efficiency degradation detection for VFD-motor-pump systems

G Wang - Science and Technology for the Built Environment, 2018 - Taylor & Francis
Electric motor-driven fan, pump, and compressor systems accounted for 27% of the
electricity usage in commercial sectors in United States in 2013. Therefore, even small …

Data-driven energy models for existing VFD-motor-pump systems

G Wang - Science and Technology for the Built Environment, 2019 - Taylor & Francis
Efficiency deterioration and inappropriate control can degrade the energy performance of
motor-driven pump and fan systems. Since variable frequency drives (VFDs) are widely …

Estimation of Three-Phase Induction Motor Efficiency at Different Loads

K Ileri, A Dalcali, R Durgut - 2023 - researchsquare.com
Asynchronous machines are widely used in many industrial applications due to their high
reliability and low cost. One of the important parameters determining motor performance is …

In-situ fan curve calibration for virtual airflow sensor implementation in VAV systems

AR Prieto, WM Thomas… - ASHRAE …, 2017 - search.proquest.com
Due to high installation costs and space limitations, airflow measurements with physical
meters in air-handling units (AHUs) are not adequate or/and accurate for energy efficient …