Control method and system for DCDC (Direct Current to Direct Current) converter

The invention discloses a control method and system for a DCDC (Direct Current to Direct Current) converter. The system comprises a sampling device, a first computer, a second computer and a pulse width modulation signal generating unit. The method comprises the following steps of: (S1) sampling a b...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	CAI JINSONG, WANG MINKANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention discloses a control method and system for a DCDC (Direct Current to Direct Current) converter. The system comprises a sampling device, a first computer, a second computer and a pulse width modulation signal generating unit. The method comprises the following steps of: (S1) sampling a bus voltage Ubus, an inverter alternating current voltage Uac(t) and an alternating current Iac (t) of the DCDC converter; (S2) figuring out a given value Ubusref of the bus voltage according to the inverter alternating current voltage Uac(t) and the alternating current Iac (t); (S3) figuring out an error value between the given value Ubusref of the bus voltage and the bus voltage Ubus; and (S4) generating a pulse width modulation signal according to the error value and outputting the pulse width modulation signal to an MOS tube base of the DCDC converter. Therefore, the bus voltage Ubus is jittered, so that an envelope line of the input current Iin is changed into a straight line and the conduction losses of an MOS