Me ke Induction Voltage Regulators?

Mai Induction Voltage Regulators shine da?

Taifata: Induction voltage regulator yana cikin abubuwan karkara mai tsari. Mutum zai iya ɗaukan tasirin voltajin ta daga sifil zuwa ma'adani mai kyau. Wannan mutane ya ɗaya ne da turn ratio da ke gaba da primary da secondary windings. Primary winding an haɗa shi da circuit da take so in yi amfani da voltage regulation, sai da secondary winding an haɗa shi a cikin series da wani.

Abun Induction Voltage Regulators

Induction voltage regulators suna cikin abun biyu: single-phase induction voltage regulator da three-phase induction voltage regulator.

Single-Phase Induction Voltage Regulator

Schematic diagram na single-phase induction voltage regulator ana bayyana a hukumar da aka baka. Primary winding an haɗa shi a cikin single-phase power supply, sai da secondary winding an haɗa shi a cikin outgoing lines.

A cikin wannan system, ana fara alternating magnetic flux. Idan ashu abubuwan biyu suka faɗa, duk magnetic flux daga primary winding za su haɗa da secondary winding. Saboda haka, maximum voltage za su fara a cikin secondary winding.

Idan rotor ya ƙoƙarin 90°, ba wani batu ba na primary flux zai haɗa da secondary windings; saboda haka, ba zai kasance wani flux a cikin secondary windings. Idan rotor ya ci ƙoƙarin har zuwa wannan matsayin, direction of the induced electromotive force (emf) a cikin secondary zai ƙarfin negative. Saboda haka, regulator zai zama idan ya ƙara ko ya ƙare ta hanyar circuit voltage, tare da relative orientation na abubuwan biyu a cikin regulator.

Single-phase voltage regulator ba zai ƙara phase shift. Primary windings suna sa a slots a surface na laminated cylindrical core. Saboda suka bar da currents mafi yawa, suke da small conductor cross-sectional area. Rotor na regulator yana da compensating windings, wanda ake kira tertiary windings.

Magnetic axis na compensating windings yana daidai 90° away from that of the primary windings. This configuration serves to counteract the detrimental series reactance effect of the secondary windings. The secondary windings, which are connected in series with the outgoing line, are located in the stator slots because of their larger conductor area requirements.

Three-Phase Induction Voltage Regulator

Three-phase induction voltage regulators suna da three primary windings da three secondary windings, wadanda suka faɗa 120° apart from one another. Primary windings suna sa a slots na laminated rotor core da suke haɗa shi a cikin three-phase AC power supply. Secondary windings suna sa a slots na laminated stator core da suke haɗa shi a cikin load.

Regulator ba zai bukata separate primary and compensating windings. Saboda kowane secondary winding na regulator yana haɗa da one or more primary windings a cikin regulator. A cikin wannan nau'in regulator, ana fara rotating magnetic field da tsari mai kyau. Saboda haka, voltage induced a cikin secondary winding yana da tsari mai kyau. Amma, phases na regulator zai ƙarfin daidai da variation na position na rotor a cikin stator.

Phasor diagram na induction regulator ana bayyana a hukumar da aka baka. Hakan, (V1) yana nufin supply voltage, (Vr) yana nufin voltage induced a cikin secondary, da (V2) yana nufin output voltage per phase. Output voltage yana samun phasor sum na supply voltage da induced voltage for any rotor displacement angle θ.

Saboda haka, locus na result yana da circle. Circle yana baka da center na ta na tip na supply voltage vector da radius equal to (Vr). Maximum output voltage zai samu a lokacin da induced voltage yana da same phase with the supply voltage. Amma, minimum output voltage zai samu a lokacin da induced voltage yana da anti-phase with the supply voltage.

Phasor diagram na three-phase case yana bayyana a hukumar da aka baka. Terminal na A, B, da C suna da input terminals, amma a, b, da c suna da output terminals na induction regulator. Supply and the output line voltages yana da same phase only at the maximum boost and minimum buck positions. For all other positions, there exists a phase displacement between the supply line voltage and the output voltage.