Title:
インバータ装置
Document Type and Number:
Japanese Patent JP5626293
Kind Code:
B2
Abstract:
In an inverter device, a first three-level circuit includes first to fourth preceding-stage switch elements connected in series between a first input end and a ground and a first charging and discharging capacitor. A second three-level circuit includes fifth to eighth preceding-stage switch elements connected in series between a second input end and the ground and a second charging and discharging capacitor. The first and second two three-level circuits define a five-level circuit that is subjected to switching with the carrier frequency of PWM modulation. The output polarity of a subsequent-stage bridge clamping circuit is inverted between the anterior half cycle and the posterior half cycle of a power supply frequency.
Inventors:
伊東 淳一
野下 裕市
野下 裕市
Application Number:
JP2012188726A
Publication Date:
November 19, 2014
Filing Date:
August 29, 2012
Export Citation:
Assignee:
株式会社村田製作所
International Classes:
H02M7/487; H02M7/48
Attorney, Agent or Firm:
Patent business corporation Kaede Patent Attorneys' Office