Self-Excited Induction Generator as an Auxiliary Brake for Heavy Vehicles and Its Analog Controller

Bae, Jae-Nam; Kim, Yong-Eun; Son, Young-Wook; Moon, Heeseok; Yoo, Changhee; Lee, Ju

doi:10.1109/tie.2014.2379218

Cited by 29 publications

(13 citation statements)

References 28 publications

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“…To facilitate the analysis of the multivariable nonlinear transient mathematical model given by (1), it is necessary to make the following assumptions: (i) Iron loss in induction machines is neglected. (ii) Only the state-space main wave component of the air-gap magnetomotive force and the time main wave component of the electromotive force along with the current are considered.…”

Section: State-space Transient Mathematical Modelmentioning

confidence: 99%

“…Because the energy crisis and the environmental burden caused by the excessive consumption of traditional energy are becoming increasingly severe, the development and utilization of renewable energy sources have attained special importance. Consequently, new energy technologies have been emerging rapidly [1][2][3][4]. Induction generators with advantages of low cost, simple and strong structure, and easy maintenance play a significant role in gridconnected, microgrid, and stand-alone energy conversion systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Transient analysis of load switches of self‐excited induction generators based on Lyapunov stability theory

2016

IEEJ Transactions Elec Engng

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Load connection and disconnection are important factors for a comprehensive investigation on the performance of induction generators, providing theoretical foundation and technical support for the optimization of system configurations and safeguard measures. Based on the transient equivalent circuits of self-excited induction generators under the two-phase stationary reference frame, steady-state motion equations are derived through the steady-state operation analysis. The analytical computation of the motion equations successively gives the necessary condition for the loaded operation, the sufficient condition for the transient operation under a given speed, and the necessary and sufficient condition for the buildup arrival to steady states. Using the holistic analysis approach based on Lyapunov stability theory, this study presents a theoretical analysis approach for transient processes and analytically solves the load ranges under the specified performance indices. Good agreement between experimental and theoretical results verifies the correctness and validity of the theoretical analysis approach and its analytical conditions with better practicability and referenced values in engineering.

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Section: State-space Transient Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transient analysis of load switches of self‐excited induction generators based on Lyapunov stability theory

2016

IEEJ Transactions Elec Engng

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“…On the other hand, many techniques utilize the eddy currents for sensing, such as metal detection sensors [15], motor fault diagnosis sensors [16] and non-destructive sensors [17]. Some automatic electrical braking systems use eddy currents for magnetic breaking [18]. In this circumstance, it tends to enlarge the eddy current effect to get a better signal to noise ratio or power distribution by using new materials or components [19].…”

Section: Introductionmentioning

confidence: 99%

A Nonlinear Circuit Analysis Technique for Time-Variant Inductor Systems

Wang

Song

et al. 2019

Sensors

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Time-variant inductors exist in many industrial applications, including sensors and actuators. In some applications, this characteristic can be deleterious, for example, resulting in inductive loss through eddy currents in motors designed for high efficiency operation. Therefore, it is important to investigate the electrical dynamics of systems with time-variant inductors. However, circuit analysis with time-variant inductors is nonlinear, resulting in difficulties in obtaining a closed form solution. Typical numerical algorithms used to solve the nonlinear differential equations are time consuming and require powerful processors. This investigation proposes a nonlinear method to analyze a system model consisting of the time-variant inductor with a constraint that the circuit is powered by DC sources and the derivative of the inductor is known. In this method, the Norton equivalent circuit with the time-variant inductor is realized first. Then, an iterative solution using a small signal theorem is employed to obtain an approximate closed form solution. As a case study, a variable inductor, with a time-variant part stimulated by a sinusoidal mechanical excitation, is analyzed using this approach. Compared to conventional nonlinear differential equation solvers, this proposed solution shows both improved computation efficiency and numerical robustness. The results demonstrate that the proposed analysis method can achieve high accuracy.

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“…The demand for brake safety, ride comfort, and energy regeneration calls more high performance and highly efficient actuators for control systems [7]- [9]. Thus, the system design and precision control of brake devices have been drawn great attention during the past few years [10]- [12].…”

Section: Introductionmentioning

confidence: 99%

High-Precision Hydraulic Pressure Control Based on Linear Pressure-Drop Modulation in Valve Critical Equilibrium State

Wang

Cao

2017

IEEE Trans. Ind. Electron.

121

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High precision and fast response are of great significance for hydraulic pressure control in automotive braking systems. In this paper, a novel sliding mode control based high-precision hydraulic pressure feedback modulation is proposed. Dynamical models of the hydraulic brake system including valve dynamics are established. An open loop load pressure control based on the linear relationship between the pressure-drop and coil current in valve critical open equilibrium state is proposed, and also experimentally validated on a hardware-in-the-loop test rig. The control characteristics under different input pressures and varied coil currents are investigated. Moreover, the sensitivity of the proposed modulation on valve's key structure parameters and environmental temperatures are explored with some unexpected drawbacks. In order to achieve better robustness and precision, a sliding mode control based closed loop scheme is developed for the linear pressure-drop modulation. Comparative tests between this method and the existing methods are carried out. The results validate the effectiveness and superior performance of the proposed closed loop modulation method.Index Terms-Sliding mode control, linear pressuredrop modulation, switching valve, hardware-in-the-loop test, experimental validation.

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Self-Excited Induction Generator as an Auxiliary Brake for Heavy Vehicles and Its Analog Controller

Cited by 29 publications

References 28 publications

Transient analysis of load switches of self‐excited induction generators based on Lyapunov stability theory

Transient analysis of load switches of self‐excited induction generators based on Lyapunov stability theory

A Nonlinear Circuit Analysis Technique for Time-Variant Inductor Systems

High-Precision Hydraulic Pressure Control Based on Linear Pressure-Drop Modulation in Valve Critical Equilibrium State

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