Cycloconverter Control Circuits
- 1 July 1972
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industry Applications
- Vol. IA-8 (4), 443-453
- https://doi.org/10.1109/tia.1972.349835
Abstract
Cycloconverter control circuitry is discussed using examples from a practical three-phase to single-phase circulating current free cycloconverter. The voltage biased cosine wave technique is used for phase control. Phase-forward and phase-back limit (PBL) pulses are superimposed on each cosine wave. Spurious gating pulses in the range 180° to 360° are suppressed. A new current zero detector is presented involving continuous monitoring of the voltage across each thyristor. Two types of circulating current elimination logic are used, suitable for 1)resistive and lagging loads, and 2)leading, resistive, and lagging loads. Auxiliary gate pulses are supplied to the incoming converter to prevent large gaps in the load current waveform.Keywords
This publication has 8 references indexed in Scilit:
- The Practical CycloconverterIEEE Transactions on Industry and General Applications, 1968
- A 5-kW Low-Frequency Power Amplifier of Improved Frequency ResponseIEEE Transactions on Industrial Electronics and Control Instrumentation, 1967
- Thyristor Adjustable Frequency Power Supplies for Hot Strip Mill Run-Out TablesIEEE Transactions on Industry and General Applications, 1967
- Factors affecting the operation of a phase-controlled cycloconvertorProceedings of the Institution of Electrical Engineers, 1967
- Precise Control of a Three-Phase Squirrel-Cage Induction Motor Using a Practical CycloconverterIEEE Transactions on Industry and General Applications, 1966
- Reversing Thyristor Armature Dual Converter with Logic Crossover ControlIEEE Transactions on Industry and General Applications, 1965
- Precise frequency power generation from an unregulated shaftTransactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1961
- Variable-speed constant-frequency generator system for aircraftTransactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1959