Title:
ELECTRIC ENERGY ARITHMETIC UNIT
Document Type and Number:
Japanese Patent JPH01195370
Kind Code:
A
Abstract:
PURPOSE:To obtain an electric energy integration device whose output is continuous by adding the integral value of the instantaneous value from a power converter to the latest integral value in the period when unit pulses from an ammeter are not received. CONSTITUTION:An output pulse B1 from an ammeter 1 is integrated by an electric energy integrator 2 to output a staircase reference electric energy signal B2. A power instantaneous value integrator 4 is reset at the time of outputting the output pulse B1 from the ammeter 1 and integrates a power instantaneous value A1 from a power converter 3 and gives the integral value to an adder 5. An integral value signal A2 is added to the reference electric energy integral value B2 by the adder 5. Thus, an integral electric energy A3 is continuously changed till the next pulse output B1 is outputted form the ammeter 1.
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Inventors:
EGI HIROSHI
Application Number:
JP1736088A
Publication Date:
August 07, 1989
Filing Date:
January 29, 1988
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G01R22/00; G01R11/00; G01R11/66; (IPC1-7): G01R11/00; G01R11/66; G01R22/00
Domestic Patent References:
| JPS58198124A | 1983-11-18 | |||
| JPS5126055A | 1976-03-03 |
Attorney, Agent or Firm:
Noriyuki Noriyuki (1 person outside)