Inductor devices – Inductive regulators with no relatively moving parts – With magnetic shunt to increase leakage reactance
Patent
1976-11-22
1977-08-09
Kozma, Thomas J.
Inductor devices
Inductive regulators with no relatively moving parts
With magnetic shunt to increase leakage reactance
29602R, 323 45, 323 56, 336184, 336215, H01F 2108, G05F 132
Patent
active
040414310
ABSTRACT:
A transformer power regulator and method of utilizing same for efficiently and variably delivering A.C. power to a load by regulating only a portion of the input voltage equal to maximum expected voltage variation in the input voltage source while transmitting most of the power directly to the load through some of the transformer windings. The laminated core structure is continuous and uninterrupted including primary and secondary winding leg portions and back portions defining a main magnetic flux circuit. A pair of control winding leg portions, with bridging portions therebetween define a separate control magnetic flux circuit. Variable energization of a pair of control windings, one on each of the control winding leg portions, variably controls the magnetic reluctance of the control magnetic flux circuit. A primary winding on the primary winding leg portion is connectible to an A.C. voltage source. Most of the power to the load is transmitted through the series combination of a bucking winding on the primary winding leg portion and a secondary winding on the secondary winding leg portion resulting in high power transmission efficiency between the source and the load. The bucking winding inductively drops a portion of the input voltage thereacross to compensate for the maximum expected deviation of the voltage source from its nominal value. Selective energization of the control windings provide control of the reluctance of the control winding leg portions, thereby controlling the shunting of flux induced in the primary winding leg portion away from the secondary winding leg portion. The secondary winding adds a variable voltage to return the voltage at the load to the desired nominal value despite deviations in the voltage source.
REFERENCES:
patent: 2306578 (1942-12-01), Wetzel
Kozma Thomas J.
Ralph Ogden
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