Control method for a three-phase self-excited inverter

Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components

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H02M 114

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042284910

ABSTRACT:
A control method for a three-phase self-excited inverter which is fed from a dc voltage source and in which the fundamental oscillation of the output voltage is adjustable in frequency and amplitude, in particular by the subharmonic method, and wherein the pulsing or timing is always done in only one of three phases (R, S or T) such that 60.degree.-wide pulse regions are arranged symmetric to the maximum and minimum of the fundamental voltage oscillation of each phase (R, S or T) and overlap each fundamental voltage oscillation.

REFERENCES:
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patent: 3820003 (1974-06-01), Tappeiner et al.
patent: 3916285 (1975-10-01), Iwata et al.
patent: 3958171 (1976-05-01), Sekino
Patel et al., "Generalized Techniques of Harmonic Elimination in Voltage Control in Thyristor Inverters: Part I-Harmonic Elimination", IEEE Transactions on Industry Applications, vol. IA-9, No. 3, May/Jun. 1973.
Patel et al., "Generalized Techniques of Harmonic Elimination in Voltage Control in Thyristor Inverters: Part II-Voltage Control Techniques", IEEE Transactions on Industry Applications, vol. IA-10, No. 5, Sep./Oct. 1974.
Lienav et al., "Mogoichkeiten, etc. "ETZ-A, Band 97, (1976, H.11, pp. 663-667).
Vandenboom et al., BBC Reprint "BBC Converter Techniques for Drives", Apr. 1970, Article 2.
Schonung et al., BBC Reprint "BBC Converter Techniques for Drives", Apr. 1970, Article 3.
Dewan et al., "Harmonic Analysis of a Synchronized Pulse Width-Modulated Three-Phase Inverter", IEEE Transactions on Industry Applications, vol. IA-10, No. 1, Jan./Feb. 1974.

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