Title:
CURRENT ESTIMATING DEVICE, ELECTRIC COMPRESSOR, CURRENT ESTIMATING METHOD, AND MOTOR CURRENT EFFECTIVE VALUE ESTIMATING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/049625
Kind Code:
A1
Abstract:
A current estimating device that estimates a capacitor current of a high-voltage circuit for driving a motor, wherein the current estimating device calculates a voltage utilization rate using the input voltage of an inverter included in the high-voltage circuit and the speed of the motor, calculates a first constant by applying the voltage utilization rate to a predetermined first arithmetic expression, and calculates the capacitor current of an electrical condenser included in the high-voltage circuit by multiplying the first constant by a motor current effective value.
Inventors:
HATTORI MAKOTO (JP)
KAMITANI HIROYUKI (JP)
HIGUCHI HIROTO (JP)
MORI MASAHIRO (JP)
WATANABE KYOHEI (JP)
KAMITANI HIROYUKI (JP)
HIGUCHI HIROTO (JP)
MORI MASAHIRO (JP)
WATANABE KYOHEI (JP)
Application Number:
PCT/JP2018/030363
Publication Date:
March 14, 2019
Filing Date:
August 15, 2018
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
H02P23/14; B60H1/00; B60H1/32; F25B1/00
Foreign References:
| JP2015208143A | 2015-11-19 | |||
| JP2011087404A | 2011-04-28 | |||
| JPH10150775A | 1998-06-02 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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