Automatically synchronized synchronous motor drive system

Details Automatically synchronized synchronous motor drive system Automatically synchronized synchronous motor drive system

1981-01-26

1983-06-21

Truhe, J. V.

Electricity: motive power systems

Synchronous motor systems

Synchronization systems

318721, 318807, H02P 736

Patent

active

043896065

ABSTRACT:
In a current-fed static controlled synchronous motor drive which includes a ramp logic for establishing the desired firing retardation for the naturally commutated thyristors, an optical encoder provides a position signal and a velocity signal, while the ramp counting the velocity pulses is automatically aligned with the position signal by means of a phase detector causing either to add pulses from a local oscillator or to inhibit velocity pulses so as to compensate for a phase error in either direction. Alignment is also provided within 60.degree. initially by presetting the ramp counting in relation to a digital representation of sine 60.degree. time intervals over a fundamental cycle.

REFERENCES:
patent: 4028609 (1977-06-01), Detering
patent: 4125796 (1978-11-01), Nagase et al.
patent: 4173722 (1979-11-01), Detering
patent: 4295085 (1981-10-01), Lafuze
patent: 4329636 (1982-05-01), Uchida et al.
Slemon et al.; "Controlled-Power-Angle Synchronous Motor Inverter Drive System," Mar./Apr., 1973, IEEE Transactions, vol. IA-9, No. 2, pp. 216-219.
Moffat et al., "Digital Phase-Locked Loop for Induction Motor Speed Control," Mar./Apr., 1979, IEEE Transactions, vol. IA-15, No. 2, pp. 176-182.

Affiliated with

Also associated with

Rating

Automatically synchronized synchronous motor drive system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatically synchronized synchronous motor drive system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatically synchronized synchronous motor drive system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2112266