The generalized theory of indirect vector control for AC machines

Ogasawara, Satoshi; Akagi, Hirofumi; Nabae, Akira

doi:10.1109/28.2898

Cited by 46 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Henceforth, following [53], it can be classified as an indirect vector control scheme, which is the most widely used implementation of FOC (especially well suited for operation close to zero speed [42]). In particular, for the speed control of the induction motor, it is shown in [56] that the passivitybased controller exactly reduces to indirect FOC under some simplifying assumptions, namely constant speed and current fed inverter (for which the additional problem of stator dynamics is not present).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Passivity-based control of a class of Blondel-Park transformable electric machines

Nicklasson

Ortega

Espinosa-Pérez³

et al. 1997

IEEE Trans. Automat. Contr.

125

View full text Add to dashboard Cite

In this paper we study the viability of extending, to the general rotating electric machine model, the passivity-based controller method that we have developed for induction motors. In this approach the passivity (energy dissipation) properties of the motor are taken advantage of at two different levels. First, we prove that the motor model can be decomposed as the feedback interconnection of two passive subsystems, which can essentially be identified with the electrical and mechanical dynamics. Then, we design a torque-tracking controller that preserves passivity for the electrical subsystem and leaves the mechanical part as a "passive disturbance." In position or speed control applications this procedure naturally leads to the wellknown cascaded controller structure which is typically analyzed invoking time-scale separation assumptions. A key feature of the new cascaded control paradigm is that the latter arguments are obviated in the stability analysis. Our objective in this paper is to characterize a class of machines for which such a passivity-based controller solves the output feedback torquetracking problem. Roughly speaking, the class consists of machines whose nonactuated dynamics are well damped and whose electrical and mechanical dynamics can be suitably decoupled via a coordinate transformation. The first condition translates into the requirement of approximate knowledge of the rotor resistances to avoid the need of injecting high gain into the loop. The latter condition is known in the electric machines literature as Blondel-Park transformability, and in practical terms it requires that the air-gap magnetomotive force must be suitably approximated by the first harmonic in its Fourier expansion. These conditions-stemming from the construction of the machine-have a clear physical interpretation in terms of the couplings between its electrical, magnetic, and mechanical dynamics and are satisfied by a large number of practical machines. The passivity-based controller presented here reduces to the well-known indirect vector controller for current-fed induction machines. Our developments constitute an extension, to voltagefed machines, of this de facto standard in industrial applications. Furthermore, our analysis provides it with a solid theoretical foundation.Index Terms-Electric machines, passivity-based control, physical systems.

show abstract

Section: Discussionmentioning

confidence: 99%

“…6) The desired transformed currents could be chosen from a similar objective as in the field-oriented approach. The transformed torque equation is generally given as (53) where is a constant, and are and components of the transformed flux vector. If we can make equal to zero and constant, it will be possible to control the torque by specifying…”

Section: Remarksmentioning

confidence: 99%

Passivity-based control of a class of Blondel-Park transformable electric machines

Nicklasson

Ortega

Espinosa-Pérez³

et al. 1997

IEEE Trans. Automat. Contr.

125

View full text Add to dashboard Cite

show abstract

“…The advances in the field of power electronics has contributed to the development of control techniques where the performance of an AC machine became comparable with that of a DC machine [2]. These techniques are known as vector control techniques and are classified as Direct/feedback field oriented control method (DFOC) and indirect/ feed forward method (IRFOC) [3]. The method depends on the determination of instantaneous rotor flux phasor position known as field angle or unit vector.…”

Section: Introductionmentioning

confidence: 99%

A Novel Rotor Resistance Estimation Technique for Vector Controlled Induction Motor Drive Using TS Fuzzy

Chacko

Bhende²,

Jain

et al. 2015

IJPEDS

View full text Add to dashboard Cite

Induction motor with indirect field oriented control is well suited for high performance applications due to its excellent dynamic behavior. But, the indirect field oriented controller is sensitive to variations in rotor time constant, especially variation in rotor resistance. In this study a scheme based on the Rotor flux Model Reference Adaptive Controller is used for on line identification of the rotor resistance and thus improving the steady state performance of the drive. The overriding feature of this estimation technique is the accurate identification of rotor resistance especially during transient and steady state conditions when the drive is operating at full load and at zero motor speed condition. Moroever, the effectiveness of the TS fuzzy controller utilizing rotor flux for online estimation of rotor resistance for four quadrant operation of motor drive is investigated and compared with the conventional PI and Mamdani fuzzy controller Simulation results in MATLAB/Simulink environment.have been presented to confirm the effectiviness of the technique.

show abstract

Advances in vector control ofac motor drives — A review

Chattopadhyay

1997

Sadhana

View full text Add to dashboard Cite

This paper attempts to present a comprehensive review of the advances made in vector control or field orientation as applied to high performance ac motor drives. Brief application survey, machine models in d-q representation, implementation issues with inverters and cycloconverters, parameter effects etc for both induction and synchronous motor vector control are dealt with and sample results from studies on them are presented. The latest advance on this control like direct torque control (DTC) has been briefly discussed. A substantial updated bibliography, though by no means complete, is included for those who are interested in keeping track of the present state-of-the-art and working further in this area.

show abstract

The generalized theory of indirect vector control for AC machines

Cited by 46 publications

References 13 publications

Passivity-based control of a class of Blondel-Park transformable electric machines

Passivity-based control of a class of Blondel-Park transformable electric machines

A Novel Rotor Resistance Estimation Technique for Vector Controlled Induction Motor Drive Using TS Fuzzy

Advances in vector control ofac motor drives — A review

Contact Info

Product

Resources

About