Title:
THREE-PHASE /SINGLE-PHASE ALTERNATING CURRENT POWER SUPPLY-COMPATIBLE ELECTRIC HOIST
Document Type and Number:
WIPO Patent Application WO/2018/123521
Kind Code:
A1
Abstract:
The present invention provides a three-phase/single-phase AC power supply-compatible electric hoist in which a three-phase AC power supply-compatible electric hoist equipped with an inverter and an AC motor can be changed to a single-phase AC power supply-compatible electric hoist by merely mounting a single-phase AC-DC converter unit, which has a simple configuration, on the three-phase AC power supply-compatible electric hoist. The three-phase AC power supply-compatible electric hoist is changed into the single-phase AC power supply-compatible electric hoist by: mounting the single-phase AC-DC converter unit equipped with a single-phase AC input terminal (51), a single-phase AC-DC converter (52), and a DC circuit (53) on the three-phase AC power supply-compatible electric hoist equipped with a three-phase AC input terminal (41), a three-phase rectifying circuit (42), a DC circuit (43), an inverter (44), and a three-phase AC motor (7); connecting a P-pole and an N-pole of a DC output terminal (54) of the single-phase AC-DC converter unit to a P-pole and an N-pole of the DC circuit (43), respectively; and opening the three-phase AC input terminal.
Inventors:
YAMANO TADASHI (JP)
Application Number:
PCT/JP2017/044231
Publication Date:
July 05, 2018
Filing Date:
December 08, 2017
Export Citation:
Assignee:
KITO KK (JP)
International Classes:
H02M7/48; H02M1/10; H02M7/06
Foreign References:
| JPS6155077A | 1986-03-19 | |||
| JP2008206260A | 2008-09-04 | |||
| JP2008206261A | 2008-09-04 |
Attorney, Agent or Firm:
KUMAGAI Takashi et al. (JP)
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