REACTOR-CAPACITOR FILTER FOR DIRECT CURRENT SOURCE
The invention pertains to electrical engineering, particularly to DC-DC converters. There is proposed a reactor-capacitor filter for DC source with the reactor in circuit of the DC source and capacitor at output of filter. The switches of inverter, which is connected to the output of said filter, ar...
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Sprache: | eng ; lav |
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Zusammenfassung: | The invention pertains to electrical engineering, particularly to DC-DC converters. There is proposed a reactor-capacitor filter for DC source with the reactor in circuit of the DC source and capacitor at output of filter. The switches of inverter, which is connected to the output of said filter, are incorporated in a single-phase bridge mode. The output of inverter through transformer and rectifier is connected to load, and the diagonal pairs of switches of inverter are activated periodically and contrary by signals generated in control junction. For purpose of improvement the functional properties of converter, a diode is introduced in series with the capacitor in conductivity direction of DC source, and a transistor is connected in parallel and in reverse direction of conductivity of DC source. A control gate of said transistor through driver is connected to output of AND-NOT logical gate but two inputs of the gate are connected to signal outputs of the control system for switching one leg of the inverter with contrary activated transistors.
Izgudrojums attiecas uz elektrotehniku, konkrēti - uz pusvadītāju līdzsprieguma pārveidotājiem. Izgudrojumā ir piedāvāts droseles-kondensatora tipa līdzsprieguma filtrs ar droseli avota ķēdē un kondensatoru filtra izejā, kurai ir pieslēgti invertora slēdži vienfāzes tiltveida slēgumā, pie kam invertors ir savienots ar izejas transformatoru, kura sekundārais tinums caur taisngriezi ir pieslēgts slodzei, pie kam tiltveida invertora diagonālslēdžu pārus periodiski un pārmaiņus pārslēdz vadības sistēmas ģenerētie signāli. Ar mērķi paaugstināt pārveidotāja funkcionālās iespējas, virknē ar kondensatoru avota vadāmības virzienā ir ieslēgta diode, tai paralēli un pretējā vadāmības virzienā ir ieslēgts tranzistors, kura vadības elektrods ir pievienots UN-NE loģiskā elementa izejai, bet loģiskā elementa abas ieejas ir pievienotas vadības sistēmas invertora tilta viena pleca dažādu pāru abu slēdžu vadības izejām. |
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