Neutral-Point Voltage-Balancing Strategies of NPC-Inverter Fed Dual Three-Phase AC Motors

Dong, Zhiqiang; Wang, Chenchen; Cui, Kai; Cheng, Qian; Wang, Jian

doi:10.1109/tpel.2020.3014915

Cited by 22 publications

(4 citation statements)

References 29 publications

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“…Parameter uncertainty is a category of common uncertainties in practical systems such as electromechanical systems, [1][2][3][4] electro-hydraulic systems, [5][6][7] aircraft, 8 military, 9,10 manipulator 11,12 and various robots. 9,13 To deal with this uncertainty, researchers developed a series of control and system identification methods.…”

Section: Introductionmentioning

confidence: 99%

Optimized indirect adaptive robust control for a class of uncertain nonlinear systems with time‐varying parameters

Chen,

Deng,

Yao

et al. 2023

Intl J Robust & Nonlinear

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This paper concerns high‐accuracy tracking control and parameter estimation for semi‐strict feedback systems with unknown time‐varying parameters. The unsmooth and discontinuous parameters and matrix parameters are all taken into consideration. An optimized indirect adaptive controller based on Z‐swapping and improved least‐square algorithm is developed to handle parametric and unmolded uncertainties simultaneously. Each design index of this adaptive law can be adjusted freely according to the order of the magnitude of unknown parameters and state variables so that the coupling of the estimating process can be avoided. The Lyapunov‐based stability analysis illustrates that the proposed method can obtain a prescribed estimating result as well as transient and final tracking performance. Simulations based on two common systems verify the outstanding performance of the proposed method.

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Section: Introductionmentioning

confidence: 99%

Optimized indirect adaptive robust control for a class of uncertain nonlinear systems with time‐varying parameters

Chen,

Deng,

Yao

et al. 2023

Intl J Robust & Nonlinear

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“…If the power of a single motor is increased to enhance the driving force only, on the one hand, the start of the high-power motor will have an impact on the power grid of the coal mine. On the other hand, the huge driving force will exceed the tension limit of the conveyor belt, and cause the belt to break, so general large belt conveyors are often driven by multiple motors [2]- [4]. However, it is also accompanied complex system control problems by using multi-motor drive, the most prominent problem of which is the balanced load distribution among multiple motors, that is, the power balance distribution of multiple motors.…”

Section: Introductionmentioning

confidence: 99%

Power Balance Control Strategy of Permanent Magnet Synchronous Motor of Belt Conveyor

Wen

et al. 2022

IEEE Access

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Aiming at the problem of multi-machine power balance control of long distance belt conveyor with double drum and three permanent magnet synchronous motor, the control method of speed and torque of master and slave motors of belt conveyor driven by multiple motors is analyzed. According to the properties of coaxial rigid connection and flexible connection of three motors of double drum, The power balance strategy based on fuzzy Active Disturbance Rejection Controller (ADRC) is proposed to achieve the purpose of disturbance rejection and improve the stability of the system. The simulation results show that the proposed method can solve the power imbalance problem of the system motor. Compared with the traditional PID control method, the corresponding speed of fuzzy ADRC control method is less than 300ms, the power deviation of rigid connected motor is less than 0.1kW, and the power deviation of flexible connected motor is less than 0.3kW. This method can effectively reduce the synchronization error of each motor, and has good robustness, and realize the power balance distribution among multiple motors.

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“…An integrated power system (IPS) combines the traditional mechanical propulsion system with the power system, which is the only way for high-energy weapons to function on the ship [1][2][3]. Compared with the conventional two-level converter, the neutral-pointclamped (NPC) three-level converter has the advantages of higher efficiency and faulttolerance [4], better quality of output voltage [5][6][7], and less voltage stress on the device [8,9], which has been widely researched and applied. The propulsion system composed of the NPC three-level H-bridge inverter and multiphase open-winding motors is the core subsystem of the IPS and the preferred scheme for modern large-tonnage ship power systems [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Voltage Harmonic for Three-Level Neutral-Point-Clamped H-Bridge Inverter Considering Dead-Time

Xin

et al. 2022

Energies

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The advantages of three-level neutral-point-clamped (NPC) H-bridge inverters, such as simple topological structure, low device voltage stress, high equivalent switching frequency, and highly expansible capacity, have made them the preferred choice for inverters matching with medium voltage high-capacity multi-phase open-end winding vessel propulsion motors. To quantitatively evaluate the propulsion motors’ harmonics, electromagnetic vibration, and noise caused by pulse-width modulation (PWM) and device dead-time, it is necessary to research the mathematical modeling of pulse-width modulated output voltage harmonics in consideration of dead-time. In this paper, the principle of the phase-disposition PWM method of the 3L-NPC H-bridge inverters was firstly introduced. Then, the analytical models of output voltage harmonics with and without considering the effect of dead-time were established based on the double Fourier series approach and the harmonic distribution of the dead-time effect was accurately characterized. On the basis of the above, the experimental platform was established to verify the proposed analytical model. Simulation and experimental results are consistent with the theoretical analysis in low and high-frequency output voltage harmonics, which proves the correctness and the feasibility of the analytical modeling method researched by this paper. This will provide a theoretical basis for subsequent studies, which include the quantitative analysis and the suppression of output harmonics of the H-bridge inverter considering dead-time.

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Neutral-Point Voltage-Balancing Strategies of NPC-Inverter Fed Dual Three-Phase AC Motors

Cited by 22 publications

References 29 publications

Optimized indirect adaptive robust control for a class of uncertain nonlinear systems with time‐varying parameters

Optimized indirect adaptive robust control for a class of uncertain nonlinear systems with time‐varying parameters

Power Balance Control Strategy of Permanent Magnet Synchronous Motor of Belt Conveyor

Modeling and Analysis of Voltage Harmonic for Three-Level Neutral-Point-Clamped H-Bridge Inverter Considering Dead-Time

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