Electric power inverter with adaptive third harmonic auxiliary i

Details Electric power inverter with adaptive third harmonic auxiliary i Electric power inverter with adaptive third harmonic auxiliary i

1984-12-10

1986-04-29

Smith, Jr., David

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

318722, 363138, H02P 540

Patent

active

045859833

ABSTRACT:
In a 3-phase third harmonic auxiliary impulse commutated electric power inverter, during a commutation interval the firing signal for the oncoming main valve of the inverter is delayed for a programmed interval of fixed duration after the commutation capacitor voltage changes polarity, whereby the peak voltage on the capacitor can automatically vary with the magnitude of load current.

REFERENCES:
patent: 3852657 (1974-12-01), Skogsholm
patent: 3935528 (1976-01-01), Brenneisen et al.
patent: 4039926 (1977-08-01), Steigerwald
patent: 4244017 (1981-07-01), Steigerwald
patent: 4253140 (1981-02-01), McMurry
patent: 4309751 (1982-01-01), Okado
patent: 4403280 (1983-09-01), Okado
Steigerwald & Lipo, "Analysis of a Novel Forced-Commutation Starting Scheme for a Load-Commutated Synchronous Motor Drive", IEEE Trans., vol. IA-15, No. 1, Jan./Feb. 1979, pp. 14-24.

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