Title:
INVERTER CONTROL METHOD, ALTERNATING CURRENT LOAD DRIVE SYSTEM, AND REFRIGERATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/150727
Kind Code:
A1
Abstract:
The present invention suppresses heat generation of a switching element of an inverter. An alternating current load drive system (100) has: a converter (2) that converts an alternating current voltage (V2) outputted from a commercial power supply (1) into a direct current voltage (Vdc); and an inverter (4), which converts the direct current voltage (Vdc) into an alternating current voltage (V1), and supplies an alternating current load (5) with operating power (Po). The control circuit (6) detects the direct current voltage (Vdc), and if the direct current voltage (Vdc) is lower than a predetermined first value, the control circuit reduces the power (Po) to be supplied to the alternating current load (5) from the inverter (4).
Inventors:
NAKAJIMA YUUKI (JP)
Application Number:
PCT/JP2018/043670
Publication Date:
August 08, 2019
Filing Date:
November 28, 2018
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H02M7/48
Foreign References:
| JP2005328583A | 2005-11-24 | |||
| JPH10162945A | 1998-06-19 | |||
| JP2014155343A | 2014-08-25 | |||
| JP2007288971A | 2007-11-01 | |||
| JP2003274666A | 2003-09-26 | |||
| JPH07303395A | 1995-11-14 | |||
| JP2009247064A | 2009-10-22 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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