Inverter driving method for induction motor

Abstract

Abstract PURPOSE:To improve the responsiveness of speed-torque with vector control on any winding connection, by reading a motor controlling constant group against the winding connection, out of a storage means, and by applying the group to a control section as a motor controlling constant. CONSTITUTION:In a vector controlling circuit, exciting current command 8, secondary current command 9, slip frequency command 10, and the like are determined by motor characteristic, and motor controlling constants 11-15 are obtained from the motor characteristic at the time of connecting each winding. The motor controlling constants 11-15 at the time of Y-connecting and at the time of -connecting are kept stored in a ROM. Then, it is judged whether operation is Y-connecting operation or -connecting operation, and a motor controlling constant group accommodated to the operation is read out of the ROM and is applied as the motor controlling constants 11-15.

Inventors

• 👤 Toshihiro Sawa
• 👤 Tsuneo Kume
• 👤 Masanobu Miyasato
• 👤 Mitsujiro Sawamura

Bibliographic Details