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Patent Searching and Data


Title:
POWER SUPPLY DEVICE FOR DRIVING ELECTROMAGNETIC PUMP
Document Type and Number:
Japanese Patent JPH06169562
Kind Code:
A
Abstract:

PURPOSE: To provide an electromagnetic pump driving power supply device which performs the wide range flow control including residual heat removing operation with variable-speed operation on high speed side at normal operation and performs the constant velocity operation on low speed side at residual heat removing operation, with an MG set composed of a number-of-poles converting motor.

CONSTITUTION: The driving power supply device of an electromagnetic pump 10 comprises an MG set 22, which is composed of a number-of-poles converting motor 22a and a synchronous motor 22b, a power source 8 for normal operation, which is connected to the high speed side of the number-of-poles converting motor 22a, a revolution controller 23 for a variable-voltage variable-frequency power source, which is supplied with power from the power source for normal operation, being connected to the synchronous generator, a coast down start switch 14, which operates by a coast down start signal and a high-speed and low-speed changeover signal, a power source 11 for residual heat removing operation, and a residual heat removing operation switch 24, which operates by the coast down signal and a coast down taking-over signal, being connected on the low speed side.


Inventors:
SAKAMOTO MITSUGI
Application Number:
JP32040492A
Publication Date:
June 14, 1994
Filing Date:
November 30, 1992
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H02K44/02; (IPC1-7): H02K44/02
Attorney, Agent or Firm:
Inomata Shoaki