Apparatus for measuring circuit constant of induction motor with

Details Apparatus for measuring circuit constant of induction motor with Apparatus for measuring circuit constant of induction motor with

1994-08-08

1997-01-14

Voeltz, Emanuel T.

Boots, shoes, and leggings

318767, 318805, G01R 1148

Patent

active

055946704

ABSTRACT:
An apparatus and method for measuring at least one desired motor constant applicable to an equivalent circuit of the induction motor according to the present invention utilizes a vector controlled speed variable apparatus for the induction motor. After the input and output parameters of the induction motor are measured, the apparatus calculates and measures the desired motor constant using a corresponding equation. For example, the secondary circuit time constant is calculated using the following equation. That is to say,

REFERENCES:
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patent: 5136228 (1992-08-01), Yamada et al.
patent: 5365158 (1994-11-01), Tanaka et al.
patent: 5396161 (1995-03-01), Doi et al.
JEC-37.sub.-1979, Induction Machines, Standard of Japanese Electrotechnical Committee, (Preface), pp. 1-3, Contents, pp. 43-44, with Background of the Invention from original specification and copy of Japanese text, pp. 1, 7, 39 and 40 (1979).
Takayama et al., "Relationship between Vector-Control of Induction Motor Taking Stator Core-Loss into Consideration and Equivalent Circuit", pp. 206-209 I.E.E. Japan, Industrial and Application Department (1992).
Yamada et al., "Compensation for Parameters Variation of Induction Motor Improved Torque Control Characteristics at Low and High Speed Region", vol. 112, No. 2, pp. 107-116 Dengakuron (1992).
Yamamoto et al., "No. 636 Measurement of Induction Motor Constants Using an Inverter", National Convention Record I.E.E. Japan, pp. 1-3 (trans.), with original Japanese text, 2 pages, (1993).
Yamamoto et al., "No. 155 Measurement of Motor Constants Using Inverter", National Convention Record I.E.E., Japan, pp. 1-10 (trans.), with original Japanese text, 3 pages, (1993).

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