Kinematic and Dynamic Analyses of a Series-Type Independently Controllable Transmission Mechanism

2012 ◽  
Vol 579 ◽  
pp. 483-493
Author(s):  
Guan Shyong Hwang ◽  
Der Min Tsay ◽  
Jao Hwa Kuang ◽  
Tzuen Lih Chern
Keyword(s):  
Power Systems ◽  
Planetary Gear ◽  
Transmission Mechanism ◽  
Alternative Form ◽  
Constant Frequency ◽  
Input Shaft ◽  
Variable Transmission ◽  
Wind Power Systems ◽  
Series Type ◽  
Turbine Speed

An innovative transmission mechanism, referred to as a series-type independently controllable transmission (ICT), is proposed in this study. The series-type ICT is an alternative form of the parallel-type ICT proposed in the former researches. It can provide performing functions similar to those of an infinitely variable transmission (IVT) or a continuously variable transmission (CVT), and produce a required and desired angular output velocity that is independently manipulated by a controller and does not depend on the angular velocity of the input shaft. While being applied to variable speed wind power systems, the ICT mechanisms could overcome turbine speed fluctuations and provide a constant speed output to the generator to generate electricity with constant frequency. The series-type ICT is composed of two planetary gear trains and two transmission-connecting members. Kinematic and dynamic characteristics of the series-type ICT are investigated and analyzed, and their analytical equations are also derived for application.

Design of a Series-Type Independently Controllable Transmission Mechanism

2012 ◽  
Author(s):  
Guan-Shyong Hwang ◽  
Der-Min Tsay ◽  
Jao-Hwa Kuang ◽  
Tzuen-Lih Chern ◽  
Tsu-Chi Kuo
Keyword(s):  
Angular Velocity ◽  
Planetary Gear ◽  
Transmission Mechanism ◽  
Alternative Form ◽  
Input Shaft ◽  
Planetary Gear Trains ◽  
Variable Transmission ◽  
Infinitely Variable Transmission ◽  
Gear Trains ◽  
Series Type

This study proposes a design of transmission mechanism which is referred to as a series-type independently controllable transmission (ICT). The series-type ICT is an alternative form of the parallel-types proposed in the former researches. The series-type ICT can serve as a continuously or an infinitely variable transmission mechanism, and it can also produce a required angular output velocity that can be independently manipulated by a controller and not affected by the angular velocity of the input shaft. The series-type ICT mechanism is composed of two planetary gear trains and two transmission-connecting members. Kinematic and dynamic characteristics of the ICT mechanism are analyzed and their analytical equations are derived for application in this study.

Kinematical Analysis of a Novel Transmission Mechanism With Steady-Speed Output for Variable Speed Wind Turbines

2010 ◽  
Author(s):  
Guan-Shyong Hwang ◽  
Der-Min Tsay ◽  
Jao-Hwa Kuang ◽  
Tzuen-Lih Chern
Keyword(s):  
Angular Velocity ◽  
Power Systems ◽  
Wind Turbines ◽  
Engineering Application ◽  
Planetary Gear ◽  
Transmission Mechanism ◽  
Variable Speed ◽  
Input Shaft ◽  
Gear Trains ◽  
Wind Power Systems

For the usage in variable speed wind turbines, a novel transmission mechanism with steady-speed output is proposed in this study. The proposed mechanism, named as independently controllable transmission (ICT), can produce a required angular velocity at the output shaft, which is independently manipulated by a controller and does not depend on the angular velocity of the input shaft. By applying the ICT mechanism to the variable speed wind power systems, the turbine fluctuation can be overcome and a constant speed can be provided for the input shaft of the generator. The ICT mechanism is fundamentally composed of two sets of planetary gear trains and two sets of transmission-connecting members. Four prototypes of the ICT mechanisms are installed to experiment their kinematical characteristics and to demonstrate their feasibility of engineering application.

Synthesis and Analysis of a Parallel-Type Independently Controllable Transmission Mechanism

2016 ◽  
Vol 8 (4) ◽  
Author(s):  
Guan-Shong Hwang ◽  
Wei-Hsiang Liao ◽  
Der-Min Tsay ◽  
Bor-Jeng Lin
Keyword(s):  
Power Flow ◽  
Transmission Mechanism ◽  
Variable Speed ◽  
Constant Frequency ◽  
Torque Distribution ◽  
Input Shaft ◽  
Variable Speed Wind Turbine ◽  
Variable Transmission ◽  
Infinitely Variable Transmission ◽  
Parallel Type

This study proposes an innovative transmission mechanism, called parallel-type independently controllable transmission (ICT). The proposed mechanism can provide functions similar to those of infinitely variable transmission (IVT) or continuously variable transmission (CVT) mechanisms. The parallel-type ICT can transmit rotational output speed that can be independently regulated using a controller and is unaffected by the speed variation of the input shaft. Thus, a variable speed wind turbine can generate electricity with a constant frequency and improved quality. The kinematic characteristics, torque distribution, and power flow of this transmission mechanism were verified using a prototype of the ICT to demonstrate the feasibility of its application.

scholarly journals Structural and kinematic analysis of a stirred tank planetary drive

2018 ◽  
Vol 226 ◽  
pp. 01012 ◽  
Author(s):  
Alexander A. Prikhodko
Keyword(s):  
Kinematic Model ◽  
Planetary Gear ◽  
Output Shaft ◽  
Mixing Efficiency ◽  
Reciprocating Motion ◽  
Stirred Tanks ◽  
Input Shaft ◽  
Variable Transmission ◽  
The Difference ◽  
Physical And Chemical

Stirred tanks are used in many industries to intensify various physical and chemical processes. Currently, one of the most promising areas of research is the creation of rotationally reciprocating stirred tanks (RRST), which realize high mixing efficiency due to the difference in the velocities of the stirred liquid. As the actuator of RRST, we proposed to use a planetary gear with elliptical gears. Due to the variable transmission ratio of elliptical gearwheels, the rotationally reciprocating motion of the output shaft is ensured with rotational motion of the input shaft. We conducted a structural analysis of the planetary gear by means of the structural mathematical model of mechanisms and machines. A kinematic model of planetary gear has been constructed and studied, resulting in velocity analogue function of the mechanism output shaft.

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