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Research on Soft Mearureing Temperature of Electric Submersible Motor Based on Analyzing Rotor Slot Harmonics

Author: HaoHongHai
Tutor: WangLiGuo
School: Harbin Institute of Technology
Course: Electrical Engineering
Keywords: Submersible motor Rotor slot harmonics The method of least squares Parameter Identification Overheating protection
CLC: TM346
Type: Master's thesis
Year: 2011
Downloads: 46
Quote: 0
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Abstract


In this paper, the National Natural Science Foundation network thermodynamic modeling of the submersible pump unit temperature soft measurement method ( 50,877,016 ) based high-temperature and high-pressure common late for China 's major oil exploration , non- submersible motor - based identification of the sensor temperature , intelligent power distribution study conducted the hyperconcentrated high gas condition dive oil motor . By derivation the mathematical mechanism between the rotor slot harmonics submersible motor temperature rise , laid a theoretical analysis of the basis for building a the submersible motor real-time temperature monitoring system . Design Identification temperature and inverter powered closed-loop control system , and efficient operation of the intelligent distribution to achieve the energy efficiency and stability of the submersible motor control provides a theoretical reference . The main content of this paper is as follows : study based on the fast Fourier transform for submersible motor stator current spectrum given between the rotor slot harmonic submersible motor speed change mechanism . Laid a theoretical foundation for the sensor temperature identification system based on a three-phase induction motor motor stator and rotor model and the conversion relationship between ABC coordinate system and αβ coordinate system . ABC coordinate system is transformed into αβ coordinate system of three-phase induction motor mathematical model , using an auxiliary fading memory recursive least squares algorithm to complete the submersible motor parameter identification , fast Fourier analysis of the results of simulation accuracy ; to achieve based the submersible motor temperature identification rotor slot harmonic analysis laid the basis of the algorithm analysis . Designed as the core of the IPC and the data acquisition card hardware platform , the different speed of the motor , motor temperature under different load identification . Build recognition system DSP2812 control center , and use its online the temperature identification with overheating protection control to verify high temperature superheated conditions dive oil motor temperature identification and the inverter deceleration control system correctness . Using SolidWorks software to build a three-dimensional model of the submersible motor and its armored cable , based on the Ansys Workbench achieve mathematical derivation of the temperature field of submersible motor , and a certain degree of long- armored cable temperature field perturbation study ; finite element calculation of the temperature and the measured temperature of the experimental platform to corroborate verifies the accuracy of the identification system of the submersible motor temperature .

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CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Induction motor
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