Title:
INVERTER DEVICE
Document Type and Number:
Japanese Patent JP3768045
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To perform an optimal operation in a load condition by corresponding an inner condition rate of an inverter to a control condition rate of a turbo machine, memorizing the inner condition rate in the inverter as a target value, and controlling the inner condition rate so as to coincide with the target value memorized by detecting it inside the inverter.
SOLUTION: An initial set of an algorithm is executed, and an interruption waiting process is executed. A mode of a console is confirmed, a display mode is judged, and shunt voltage, current, and a frequency are displayed. It is judged whether it is a constant set mode or not, a data of a relation between operating speed and the shunt voltage is set, and is memorized to a memory. It is judged whether START = OFFH or not. When it is OFFH, it is regarded as established a start condition. An operation is started with initial speed, target shunt voltage is set, and is stored in a memory. The shunt voltage is detected, and a target value and a detected value are compared with each other. Accordingly, costs can be reduced, miniaturization and light weight can be attained, and reliability can be improved by simplifying a circuit.
Inventors:
Koichi Sato
Application Number:
JP27071999A
Publication Date:
April 19, 2006
Filing Date:
June 03, 1994
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
F04D15/00; H02M7/48; H02P27/06; (IPC1-7): F04D15/00; H02M7/48; H02P7/63
Domestic Patent References:
| JP5288412A |
Attorney, Agent or Firm:
Patent Business Corporation Daiichi International Patent Office