Microcomputer Implemented PWM Inverter Using a Unique Pattern of Switching Angles

A method is proposed for implementing a PWM transistor inverter using a microcomputer. The control of the input de voltage to the inverter allows the use of a unique pattern of switching angles and a continuous variation of the output voltage. The periodically measured input de voltage defines compl...

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Veröffentlicht in:	IEEE transactions on industry applications 1987-01, Vol.IA-23 (1), p.85-89
Hauptverfasser:	Mishriky, Aida H., Girgis, Girgis A, Selim, Hany
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Electrical engineering. Electrical power engineering Equations Exact sciences and technology Frequency conversion Microcomputers Microprocessors Power electronics, power supplies Pulse width modulation Pulse width modulation inverters Space vector pulse width modulation Voltage control Voltage measurement
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Beschreibung
Zusammenfassung:	A method is proposed for implementing a PWM transistor inverter using a microcomputer. The control of the input de voltage to the inverter allows the use of a unique pattern of switching angles and a continuous variation of the output voltage. The periodically measured input de voltage defines completely the switching instants, which are inversely proportional to the measured dc voltage. A 10-bit A/D, converter allows a voltage and consequently a frequency resolution of 0.1 percent. Since the proposed method does not require extensive look-up tables, only about 700 bytes of memory were required for the inverter implementation using a TMS 9900 microprocessor.
ISSN:	0093-9994 1939-9367
DOI:	10.1109/TIA.1987.4504870