Apparatus for determining active and/or reactive current and/or

Details Apparatus for determining active and/or reactive current and/or Apparatus for determining active and/or reactive current and/or

1985-05-02

1986-09-02

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 35, 363132, 323207, H02P 1320

Patent

active

046099832

ABSTRACT:
In an inverter, the phase, frequency and amplitude of the output voltage are determined by the switching signals for the inverter switches. By means of the switches which can be actuated by the same switching signals, the measured values corresponding to the phase currents are pulse width-modulated. The instantaneous values of the phase power formed thereby are optionally added to form the total active power sum. A characteristic stage can weight the sum signal with the reciprocal value of the voltage drive of the inverter, so that a signal is produced which is proportional to the active current. In a similar manner, also the reactive current can be determined by means of switches if the phase of the measured phase currents is shifted by .pi./2.

REFERENCES:
patent: 3967173 (1976-06-01), Stich
patent: 4099225 (1978-07-01), Nygaard
patent: 4307442 (1981-12-01), Yano et al.
patent: 4502106 (1985-02-01), Glennon
patent: 4546422 (1985-10-01), Okado

Affiliated with

Also associated with

Rating

Apparatus for determining active and/or reactive current and/or does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for determining active and/or reactive current and/or , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for determining active and/or reactive current and/or will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1100540