Investigation of dynamic and synchronization properties of a multi-motor driving system: Theoretical analysis and experiment

Shu, Ruizhi; Wei, Jing; Tan, Rulong; Wu, Xiaoyong; Fu, Benyuan

doi:10.1016/j.ymssp.2020.107496

Cited by 31 publications

(12 citation statements)

References 26 publications

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“…𝐶 , and 𝐾 , denote the damping matrix and stiffness matrix of the Timoshenko beam, and their detailed matrix forms are shown in Ref. [19]. 𝑋 , and 𝐹 , denote the displacement and exciting force column vectors of the Timoshenko beam.…”

Section: Dynamic Model Of Timoshenko Beammentioning

confidence: 99%

Dynamic characteristic analysis of a multi-power coupling transmission system considering non-torque loads

Ge¹,

Shu²,

Ma³

et al. 2022

J. vibroeng.

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The multi-power coupling transmission system (MPCTS) is an electromechanical coupling system, which typically use two or more induction motors to provide its driving torque. It is used in various industrial applications, such as cutter header driving systems of tunnel boring machinery, and yaw systems of wind turbines. In practical engineering applications, the loads borne by the MPCTS are very complex, including both torque loads and non-torque loads. Its dynamic characteristics are affected by both the gear transmission system and the drive motors. For this study, an electromechanical coupling dynamic model of the MPCTS, coupled with a gear transmission system, induction motor, and non-torque load, was constructed to analyze its dynamic characteristics under a non-torque load condition. The results showed increased offsets from the gear vibration equilibrium position, as well as deterioration in system load-sharing characteristics from increases in non-torque load and rotational speed. However, the influence of the non-torque load was significantly greater than that of the rotational speed.

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Section: Dynamic Model Of Timoshenko Beammentioning

confidence: 99%

Dynamic characteristic analysis of a multi-power coupling transmission system considering non-torque loads

Ge¹,

Shu²,

Ma³

et al. 2022

J. vibroeng.

Self Cite

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“…Liu [15] combined the lumped-parametric model of the sun gear and planetary gear with the finite element model of the ring and planetary carrier to propose a hybrid mechanical model to study the dynamic characteristics of the electromechanical coupling under the known dynamic electromagnetic torque excitation of the motor. Shu [16] established a model of the electromechanical coupling dynamics of a multi-source drive system which included the gear system, the load and the drive motors, and investigated the effect of different loads on the synchronization characteristics of the system. The above-mentioned papers modelled the electromechanical coupling between motor and gearbox, but oversimplified the supply voltage at the motor input and did not consider the influence of the inverter.…”

Section: Introductionmentioning

confidence: 99%

“…In the dynamic characteristics analysis method, most scholars [12][13][14][15][16][17][18][19][20][21][22] mainly focus on the dynamics of electromechanical inter-coupling of systems in the steady state, and some scholars also study the dynamic characteristics of electromechanics under transient conditions for some electrical systems with transients [11] or sudden changes in mechanical loads [10,23]. However, for differential speed regulation systems, it is very basic and common for the variable frequency drive to produce smooth changes in the mechanical load.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is necessary to carry out transient analysis of the start-up and speed regulation stages in addition to the study of the steady state characteristics of the differential speed regulation system. Some of the above-mentioned scholars [10][11][12][13][14][15][16] have studied the dynamic characteristics of motor-gear system coupling, while others [17][18][19][20][21][22] have analyzed the dynamic characteristics of inverter-motor coupling or invertermotor-pump coupling. These studies only consider part of the electromechanical drive system and do not provide a complete reflection of the overall coupling dynamic characteristics of the electromechanical coupling system.…”

Section: Introductionmentioning

confidence: 99%

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Electromechanical Coupling Dynamic Characteristics of Differential Speed Regulation System Considering Inverter Harmonics Under Variable Operating Conditions

et al. 2022

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The differential speed regulation system driven by inverters, motors and differential gear trains is a complex electromechanical system that achieves speed regulation and energy savings efficiently and economically. In this paper, the complete drive trains dynamic model of the differential speed regulation system with the inverter power supply-motor-differential gearbox-load is established. The inverter power supply considers constant voltage to frequency ratio control, sinusoidal pulse width modulation and inverter, the motors are modeled based on the equivalent circuit method, and the differential gear trains consider a lateral-torsional model with time-varying meshing stiffness and damping. The dynamic properties of the system are analyzed and compared with the variable frequency drive model considering inverter power supply and the direct drive model using ideal power supply under variable operation conditions. The results show that the variable frequency drive model varies more smoothly in the time domain and contains additional harmonic components in the frequency domain resulting from the coupling of the inverter triangle carrier frequency to the fundamental frequency of the power supply than the direct drive model. It also shows that the variable frequency drive model is a more realistic and rational model than the direct drive model. The complex coupling relationship can be seen in the inverter power supply-motor-differential gearbox-load system, where both inverter harmonics and mechanical meshing force harmonics are found in the dynamic response of the motor's electromagnetic torque, rotor speed; the inverter harmonics are also reflected in the mechanical meshing force harmonics.

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“…On the other hand, some theoretical and experimental studies on multi-motor driving systems are mainly focused on the dynamic characteristics of electromechanical system of some large construction machinery, such as the synchronous characteristics of the cutter head drive system of tunneling machine under impact load. 21,22…”

Section: Introductionmentioning

confidence: 99%

Motor shifting and torque distribution control of a multi-motor driving system in electric construction vehicles

Kong

Wang

Kong

et al. 2021

Advances in Mechanical Engineering

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With the rapid development of the world economic construction and the shortage of energy, it has become a hot research issue to realize the electrification of the vehicle driving system and improve energy efficiency. Most of the electric construction machinery power systems are characterized by low speed and high load. The coordinated driving of multiple motors can increase the output torque and improve the transmission efficiency of the machine on the basis of a compact layout. A novel configuration of electric construction vehicles based on multi-motor and single-speed and its driving torque distribution control method is presented in this paper. The detailed mathematical model is established and the simulation analysis is carried out based on it. The results show that the proposed multi-motor driving system with the control strategy can improve the overall efficiency in the condition of ensuring the driving force when the parameter matching and motors choosing reasonably.

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Investigation of dynamic and synchronization properties of a multi-motor driving system: Theoretical analysis and experiment

Cited by 31 publications

References 26 publications

Dynamic characteristic analysis of a multi-power coupling transmission system considering non-torque loads

Dynamic characteristic analysis of a multi-power coupling transmission system considering non-torque loads

Electromechanical Coupling Dynamic Characteristics of Differential Speed Regulation System Considering Inverter Harmonics Under Variable Operating Conditions

Motor shifting and torque distribution control of a multi-motor driving system in electric construction vehicles

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