Induction Motors Torque Control

Amin, Bahram

doi:10.1007/978-3-662-04373-8_7

Cited by 6 publications

(8 citation statements)

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“…If Kirchhoff's Voltage Law is applied to a loop containing C, R 1 , L W , and L X , and also around the two closed R-L loops in the induction motor model, and the above-noted expressions for i LY and i LZ are used, the following equations are obtained. [11] [12]…”

Section: Figure 4 System Configuration With a Capacitively-compensatmentioning

confidence: 99%

Sandia Smart Anti-Islanding Project; Summer 2001: Task II Investigation of the Impact of Single-Phase Induction Machines in Islanded Loads: Summary of Results

Ropp¹,

Bonn²,

Gonzalez³

et al. 2002

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Islanding, the supply of energy to a disconnected portion of the grid, is a phenomenon that could result in personnel hazard, interfere with reclosure, or damage hardware. Considerable effort has been expended on the development of IEEE 929, a document that defines unacceptable islanding and a method for evaluating energy sources. The worst expected loads for an islanded inverter are defined in IEEE 929 as being composed of passive resistance, inductance, and capacitance. However, a controversy continues concerning the possibility that a capacitively compensated, single-phase induction motor with a very lightly damped mechanical load having a large rotational inertia would be a significantly more difficult load to shed during an island. This report documents the result of a study that shows such a motor is not a more severe case, simply a special case of the RLC network.

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Section: Figure 4 System Configuration With a Capacitively-compensatmentioning

confidence: 99%

Sandia Smart Anti-Islanding Project; Summer 2001: Task II Investigation of the Impact of Single-Phase Induction Machines in Islanded Loads: Summary of Results

Ropp¹,

Bonn²,

Gonzalez³

et al. 2002

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“…At last by using the experimental results done with the hardware platform, the good steadydynamic performance of the variable-speed induction motor drive based on DSP2812 is proved. (2) And the stator and rotor flux-linkage voltage in the same reference frame can be expressed: /s =L is+Lmir (3) Y/r = L ir + Lm is (4) And the expression for electromagnetic torque equation in the same reference frame is: 'mr = VL =I+(1+r)ir (6) Lm Substitution of (3) into (1) yields the following stator voltage equation in the rotor-flux-oriented reference frame: dis + dir + USIS RjL~+L4ct4C rjCoLj+j~L (7) = UM + jUTs Because the rotor magnetizing-current space phasor is coaxial with the M-axis in the special frame fixed on the rotor flux, imr imr | the following equation is obtained: …”

Section: Introductionmentioning

confidence: 99%

Study on the Vector Control Method of IM for Variable Speed Drive Based on DSP

Zhang

Yang

2006

2006 IEEE/RSJ International Conference on Intelligent Robots and Systems

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This paper proposes a fully digital high performance variable speed drive of induction motor implementing based on a single chip DSP motor controller. Some important models and features of the classic FOC are analyzed deeply and the implementing flowchart is given. The proposed speed control algorithm programming in C++ is realized by the TMS320F2812 DSP within 25us offering a fast current response. Experimental results show that very well static-and transientperformance can be obtained by the proposed variable-speed drive with reduced hardware and higher reliability. Index Terms -Induction motor, vector control, DSP. NOMENCLATURE Us, Ur Stator and rotor voltage space phasor im,iS, ir Magnetizing, stator and rotor current space phasor /V[s ' r Stator and rotor flux-linkage space phasor Lm, Ls, Lr Magnetizing, stator and rotor inductance respectively Rs Rr Stator and rotor resistance at)e Ct)r The angular speed of stator flux and rotor te the electromagnetic torque Rotor leakage factor (JLr / Lm,) and total leakage factor (1 -L2 I LL) Rotor time constant (Lr I Rr) and stator transient time constant (uL, I Rs ) Subscripts denoting M-and T-axis of the rotor -flux-oriented reference frame

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“…Shea, J.J., EI-M Jul-Aug 04 45-46 book review; Plastics Additives -Volume II -An Industry Guide, 3rd Ed (Flick, E.W. ;2002…”

mentioning

confidence: 99%

“…Qi, X., + ,EI-M Nov-Dec 04 27-34 part 2, materials, structs., props. Maier, G., EI-M May-Jun 04 6-24 Das, J.C.;2002). Shea, J.J., EI-M Jan-Feb 04 59-60 Heat conduction rational consideration of space charge.…”

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confidence: 99%