Series resonant converter transformer assembly having integral i

Details Series resonant converter transformer assembly having integral i Series resonant converter transformer assembly having integral i

1997-06-23

1999-03-23

Tso, Edward

Electricity: power supply or regulation systems

External or operator controlled

Using a transformer or inductor as the final control device

323333, 323362, G05B 2402

Patent

active

058865160

ABSTRACT:
A transformer assembly in which an isolation transformer and two additional inductor elements of a series/parallel resonant converter are physically integrated in a cost and space-efficient design. The transformer and two inductors are integrated through the simultaneous control of the leakage inductance and the magnetizing inductance of the assembly. The primary and secondary windings of the transformer are wound in a prescribed manner on a closed-path ferromagnetic core, the magnetizing inductance of the unit being determined by the desired inductance of second inductor, and the leakage inductance of the unit being determined by the inductance of the first inductor, which predominates the total series inductance of the tank circuit. The desired magnetizing inductance is achieved by controlling an air gap disposed in the magnetic flux path of the core, while the desired leakage inductance is achieved by winding a certain portion of the secondary turns on a loosely coupled leg of the core. A non-magnetic housing and spring clamp hold the assembly and maintain the air gap constant.

REFERENCES:
patent: 4274071 (1981-06-01), Pfarre
patent: 5434767 (1995-07-01), Batarseh et al.
patent: 5438497 (1995-08-01), Jain

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