Traditional transmission in a vehicle has low efficiency and that in a wind turbine has a constant output-to-input speed ratio, which needs a power converter to regulate the current frequency that can be fed into the grid. Different types of continuously variable transmission (CVT) have been developed for vehicle and wind turbine applications, which allow optimal engine speeds to be selected for different driving conditions in the former and can generate constant-frequency current without using a power converter in the latter. An infinitely variable speed converter (IVSC) is a specific type of CVT that can achieve a zero speed ratio and transmit a large torque at a low speed ratio. An IVSC with drivers that convert an eccentric motion of cams to a concentric motion of the output shaft through one-way bearings is introduced, and an active control system with a combined feedback and feed-forward control that can automatically adjust the eccentricity of outer cams to control the speed ratio of the transmission is developed. The kinematic model of the IVSC is derived and fitted by a polynomial function to serve as the feed-forward function in the control law. The feedback control is used to reduce the system error. A dynamic model of the IVSC is derived to investigate the effect of the dynamic load on the input and output speeds. Static and dynamic tests were conducted to validate the kinematic model of the IVSC. The variation of the average output speed per revolution of the output shaft is 0.56% with respect to the desired output speed in the simulation and 0.91% in the experiments.
Skip Nav Destination
Article navigation
Research-Article
Modeling and Control of an Infinitely Variable Speed Converter
W. D. Zhu,
W. D. Zhu
1
Professor
Fellow ASME
Department of Mechanical Engineering,
Baltimore County,
Fellow ASME
Department of Mechanical Engineering,
University of Maryland
,Baltimore County,
1000 Hilltop Circle
,Baltimore, MD 21250
1Corresponding author.
Search for other works by this author on:
X. F. Wang
X. F. Wang
Graduate Research Assistant
Department of Mechanical Engineering,
Baltimore County,
Department of Mechanical Engineering,
University of Maryland
,Baltimore County,
1000 Hilltop Circle
,Baltimore, MD 21250
Search for other works by this author on:
W. D. Zhu
Professor
Fellow ASME
Department of Mechanical Engineering,
Baltimore County,
Fellow ASME
Department of Mechanical Engineering,
University of Maryland
,Baltimore County,
1000 Hilltop Circle
,Baltimore, MD 21250
X. F. Wang
Graduate Research Assistant
Department of Mechanical Engineering,
Baltimore County,
Department of Mechanical Engineering,
University of Maryland
,Baltimore County,
1000 Hilltop Circle
,Baltimore, MD 21250
1Corresponding author.
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received February 6, 2013; final manuscript received December 20, 2013; published online February 24, 2014. Assoc. Editor: Luis Alvarez.
J. Dyn. Sys., Meas., Control. May 2014, 136(3): 031015 (10 pages)
Published Online: February 24, 2014
Article history
Received:
February 6, 2013
Revision Received:
December 20, 2013
Citation
Zhu, W. D., and Wang, X. F. (February 24, 2014). "Modeling and Control of an Infinitely Variable Speed Converter." ASME. J. Dyn. Sys., Meas., Control. May 2014; 136(3): 031015. https://doi.org/10.1115/1.4026411
Download citation file:
Get Email Alerts
Cited By
Offset-Free Koopman Model Predictive Control of Thermal Comfort Regulation for A VRF-DOAS Combined System
J. Dyn. Sys., Meas., Control
Rejection of Sinusoidal Disturbances With Unknown Slowly Time-Varying Frequencies for Linear Time-Varying Systems
J. Dyn. Sys., Meas., Control (July 2024)
Using Control Barrier Functions to Incorporate Observability: Application to Range-Based Target Tracking
J. Dyn. Sys., Meas., Control (July 2024)
Gas Path Fault Diagnosis of Turboshaft Engine Based on Novel Transfer Learning Methods
J. Dyn. Sys., Meas., Control (May 2024)
Related Articles
Kinematic Analysis of Planetary Gear Systems Using Block Diagrams
J. Mech. Des (June,2010)
A Kinematics and Power Flow Analysis Methodology for Automatic Transmission Planetary Gear Trains
J. Mech. Des (November,2004)
Rest-to-Rest Motion for Planar Multi-Link Flexible Manipulator Through Backward Recursion
J. Dyn. Sys., Meas., Control (March,2004)
Flexible Multibody Dynamic Modeling of a Horizontal Wind Turbine Drivetrain System
J. Mech. Des (November,2009)
Related Proceedings Papers
Related Chapters
QP Based Encoder Feedback Control
Robot Manipulator Redundancy Resolution
Feedback-Aided Minimum Joint Motion
Robot Manipulator Redundancy Resolution
Computer Aided Machine Design
Computer Aided Design and Manufacturing