Title:
PULSE WIDTH MODULATION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/181506
Kind Code:
A1
Abstract:
According to the present invention, a compressor electric motor is caused to generate preheat. The path of an integral value over time of a unit voltage vector constituting a voltage vector serving as a unit which is a constituent of an instantaneous space vector representing a voltage (Vu, Vv, Vw) output other than in a dead time period by an inverter (3) which drives a compressor electric motor (5) forms a loop in a period that is shorter than the reciprocal of the maximum value of an operating frequency of an electrical angle of the compressor electric motor (5).
Inventors:
KITOU MINORU (JP)
KOBAYASHI NAOTO (JP)
KOBAYASHI NAOTO (JP)
Application Number:
PCT/JP2018/012827
Publication Date:
October 04, 2018
Filing Date:
March 28, 2018
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H02P27/08; F25B1/00; H02M7/48; H02P21/22
Domestic Patent References:
| WO2016071965A1 | 2016-05-12 |
Foreign References:
| JP5737445B2 | 2015-06-17 | |||
| JP2001286183A | 2001-10-12 | |||
| US20150236628A1 | 2015-08-20 | |||
| JP5490249B2 | 2014-05-14 | |||
| JP5693617B2 | 2015-04-01 | |||
| JPS5737445B2 | 1982-08-10 |
Other References:
See also references of EP 3605835A4
DAIJYO: "On PWM Patterns and Harmonic Analysis of a General Purpose Inverter for Induction Motor Drives", INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN TRANSACTIONS D, THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN, vol. 109, no. 11, 1989, pages 809 - 816
OHYAMA: "A Novel Current Control Technique for Voltage Source Inverter in Field Oriented Control", INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN TRANSACTIONS B, THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN, vol. 105, no. 11, 1985, pages 901 - 908
DAIJYO: "On PWM Patterns and Harmonic Analysis of a General Purpose Inverter for Induction Motor Drives", INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN TRANSACTIONS D, THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN, vol. 109, no. 11, 1989, pages 809 - 816
OHYAMA: "A Novel Current Control Technique for Voltage Source Inverter in Field Oriented Control", INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN TRANSACTIONS B, THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN, vol. 105, no. 11, 1985, pages 901 - 908
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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