Phase voltage measuring device of an AC motor and a measuring me

Details Phase voltage measuring device of an AC motor and a measuring me Phase voltage measuring device of an AC motor and a measuring me

1992-10-21

1993-12-07

Ro, Bentsu

Electricity: motive power systems

Induction motor systems

Primary circuit control

318767, 318811, H02P 528

Patent

active

052686280

ABSTRACT:
A phase voltage measuring device for an alternating current and a measuring method thereof for detecting a voltage from a main power supply Vcc supplied to a motor, wherein the voltage is converted to a digital signal which is multiplied by a basic pulse width modulation signal for detection of the phase voltage. A phase voltage measuring device and a measuring method have the advantage of measuring a phase voltage with a simple circuit by eliminating the problems associated with a conventional phase voltage measuring device which uses a current measuring coil and a pulse converter.

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patent: 5032771 (1991-07-01), Kerkman et al.
patent: 5159246 (1992-10-01), Ueki

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