Circuit arrangement for supplying a load

Details Circuit arrangement for supplying a load Circuit arrangement for supplying a load

1989-11-30

1991-02-12

Skudy, R.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 87, 363 89, 363124, 363126, H02M 112, H02M 114

Patent

active

049929216

ABSTRACT:
A circuit arrangement for supplying a load (15) with energy from a power supply mains (1 to 5; 21, 22, 23) conveying at least one alternating voltage (UW; R, S, T) includes a simple network to ensure both a uniform energy supply of the load (15) and a reliable suppression of interference from the load to the power supply mains and in the reverse direction by means of a rectifier arrangement (7 to 10) which for each terminal (4, 5; 21, 22, 23), of the power supply mains includes a rectifier stage (7, 8; 9, 10; 24, 25; 26, 27; 28, 29) constituted as a first branch of a bridge rectifier. For each rectifier stage an energy storage device (11; 12; 30; 31; 32) can be charged by and is connected to said stage in accordance with a complementary branch of the bridge rectifier. For each stage a switching element (13; 14; 33; 34; 35) is provided for connecting each energy storage device to the load. A control circuit (18; 36; 191, 192) switches the switching elements-- cyclically following the charge of the energy storage devices from the power supply mains, via the rectifier stages. The switching elements are switched to conduct outside of the charge time intervals of the storage devices (i.e. the conducting phases of the rectifier stages).

REFERENCES:
patent: 3764886 (1973-10-01), Zarowin
patent: 4622474 (1986-11-01), Christl et al.
patent: 4821166 (1989-04-01), Albach
patent: 4855890 (1989-08-01), Kammiller

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