초록 ▼

A circuit for providing a regulated a-c or d-c output voltage from an unregulated a-c input voltage. A series inductance is connected between the regulator input and the regulator output to support the difference in voltage between the unregulated a-c input voltage and the regulated a-c or d-c outpu

A circuit for providing a regulated a-c or d-c output voltage from an unregulated a-c input voltage. A series inductance is connected between the regulator input and the regulator output to support the difference in voltage between the unregulated a-c input voltage and the regulated a-c or d-c output voltage. A controllable shunt reactance is connected to the source of input voltage, through the series inductance, to vary the current through and the voltage across the series inductance. Control circuitry controls the magnitude of the current which the shunt reactance draws through the line inductance, as required, to establish and maintain the regulated output voltage at the desired output current.

대표청구항 ▼

A voltage regulator circuit comprising, in combination, a circuit input for connection to a polyphase a-c source, a circuit output for connection to a load, polyphase line inductance means for supporting a voltage dependent upon the difference in voltages between the a-c voltages at the circuit inpu

A voltage regulator circuit comprising, in combination, a circuit input for connection to a polyphase a-c source, a circuit output for connection to a load, polyphase line inductance means for supporting a voltage dependent upon the difference in voltages between the a-c voltages at the circuit input and the voltage at the circuit output, a transformer having a set of polyphase primary windings, having a first set of polyphase secondary windings and having a second set of polyphase secondary windings, means for connecting the line inductance means between the circuit input and the primary windings, means for connecting the first set of secondary windings to the circuit output, at least three capacitors connected in a closed circuit path such that each capacitor can exchange charge with each adjacent capacitor, the capacitors serving as means for drawing a leading component of current from the circuit input through the line inductance means and the transformer, means for connecting the capacitors to the second set of secondary windings, controllable switching means for sequentially conducting a resonant discharge current pulse through each capacitor to reverse the polarity of the charge across that capacitor and redistribute charge among the then remaining capacitors, each resonant discharge current pulse having a resonant discharge frequency of from three to ten times the frequency of the voltage at the circuit input, and control means for changing the phase relationship between said resonant discharge current pulses and the voltages at the circuit input, in accordance with the voltage at the circuit output, to maintain the voltage at the circuit output at a substantially constant value.