Half-bridge arrangement for switching electrical power

Details Half-bridge arrangement for switching electrical power Half-bridge arrangement for switching electrical power

1993-09-08

1995-01-10

Stephan, Steven L.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363141, H02M 75387

Patent

active

053813308

ABSTRACT:
A half-bridge arrangement for switching electrical powers, wherein at least two semiconductor switches (14, 21; 15, 20; 16, 19; 17, 18) forming a half-bridge (12a; 12b; 12c; 12d) are connected in series; each semiconductor switch (14, 21; 15, 20; 16, 19; 17, 18) is provided with a control input (G) which is connected to a driving circuit (23, 24); each first semiconductor switch (14; 15; 16; 17) is at a high voltage potential (V.sub.ss) with its source terminal (S); each second semiconductor switch (18; 19; 20; 21) is at a low voltage potential (V.sub.DD) with its drain terminal (D); the drain terminal (D) of each first semiconductor switch (14; 5; 16; 17) is connected with the source terminal (S) of each respective second semiconductor switch (18; 19; 20; 21) for providing an output terminal (A); and at least one capacitor assembly (30) is arranged between the high and the low voltage potential (V.sub.SS, V.sub.DD); is characterized in that said driving circuit (23, 24) activates said semiconductor switches (14, 21; 15, 20; 16, 19; 17, 18) by a control signal with a switching frequency of more than 20 kHz; said capacitor assembly (30) is made up by at least one sheet capacitor (30a) at a printed circuit board (33) carrying semiconductor switches (14, 21; 15, 20; 16, 19; 17, 18) and by at least one wrap capacitor (30b) designed as a hollow coil (40); said semiconductor switches (14, 21; 15, 20; 16, 19; 17, 18) being arranged within said wrap capacitor (30b); and a fluid cooling being provided within the hollow coil (40).

REFERENCES:
patent: 4617621 (1986-10-01), Kuroki
patent: 4860184 (1989-08-01), Tabisz et al.
patent: 4979089 (1990-12-01), Takase
patent: 5132896 (1992-07-01), Nishizawa et al.
patent: 5170337 (1992-12-01), Borowiec et al.
patent: 5231563 (1993-07-01), Jitaru
patent: 5253157 (1993-10-01), Severinsky

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