Record Details
A voltage regulated SCR inverter utilizing conduction angle control
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | A voltage regulated SCR inverter utilizing conduction angle control |
| Names |
Skaar, Donald Laverne
(creator) Amort, Donald L. (advisor) |
| Date Issued | 1966-11-04 (iso8601) |
| Note | Graduation date: 1967 |
| Abstract | This paper describes an inverter design which provides voltage regulation against variations in both the input voltage and load impedance. This design modifies the so-called parallel inverter, which consists of two silicon controlled rectifiers (SCRs) operating in a push-pull arrangement, to include a third regulating SCR. This regulating SCR is controlled by a small self-saturating magnetic amplifier which is driven by a low-voltage winding of the inverter output transformer. The regulating SCR reduces the conduction angle of each of the parallel-connected SCRs to something less than the normal 180° conduction angle in order to maintain the output voltage constant. The regulating circuitry also reduces the harmonic distortion of the output waveform. Mathematical equations are given which relate the harmonic content of the output waveform to the conduction angle. Circuitry is incorporated into the design to feed back reactive energy associated with the commutating elements to the dc source. This circuitry results in a considerable increase in efficiency, particularly under light load conditions. Waveforms of the various circuit voltages and currents are plotted on the same time base to clarify the regulating mode. Curves are plotted of the output voltage, efficiency and percent harmonic distortion as a function of the load and the input voltage. |
| Genre | Thesis/Dissertation |
| Topic | Electric current rectifiers |
| Identifier | http://hdl.handle.net/1957/47457 |
