Uninterruptible power supply with energy conversion and enhancement

Power supply control apparatus employable with an a.c. source input of given frequency and amplitude for providing a regulated output to a load, comprising:

• battery means of given storage level and capacity for providing a rechargeable storage reservoir;
• node means for establishing a d.c. node connection having a predetermined energy level;
• input converter means coupled with a select impedance between said node connection and said a.c. source and controllable to provide at said input a control a.c. signal in select phase relationship with said given phase and of select amplitude;
• bi-directional output converter means coupled between said node connection and said load for employing said energy at said node to derive said output to said load;
• bi-directional reservoir inverter means having a d.c. side coupled with said battery means, including inverter switching means actuable at a select frequency to provide a time varying output of given phase;
• bi-directional a.c.-to-d.c. converter means having an a.c. side responsive to said time varying output, a d.c. side coupled in energy transfer relationship with said node connection and including converter switching means controllable to derive a select phase relationship of said a.c. side with respect to said time varying output given phase;
• and
• control means for controlling said converter switching means to supply energy to said node connection to maintain said energy level by effecting a selectively lagging said phase relationship of said converter means a.c. side with respect to said time varying output given phase.

Power supply control apparatus employable with an input a.c. source of given frequency and amplitude for providing a regulated output to a load, comprising:

• positive and negative rail means for establishing a d.c. node connection having a predetermined effective energy level;
• capacitor means coupled with said rail means for providing energy storage at said node connection;
• an input converter including first switching means coupled with said rail means and connectable with said input a.c. source and controllable for applying an a.c. signal of select amplitude to said source at said given frequency and in select phase relationship therewith;
• an output converter including second switching means coupled with said rail means, energizable therefrom, connectable with said load and controllable for applying an a.c. output thereto;
• battery means of given storge level and capacity for providing a rechargeable energy reservoir;
• voltage level adjustment means having primary and secondary sides for selectively boosting voltages asserted at said primary side;
• bi-directional reservoir inverter means having a d.c. side coupled with said battery means and an a.c. side coupled with said voltage level adjustment means primary side for applying an a.c. output of given phase and frequency thereto;
• bi-directional a.c.-to-d.c. rectifier means having controllable third switching means coupled with said voltage level adjustment means secondary side and said rail means for association in energy transfer relationship with said d.c. node connection;
• and
• control means responsive to said a.c. source given amplitude and frequency and to said rail means effective energy level when below said predetermined energy level to apply a select phase lag with respect to said bidirectional a.c.-to-d.c. rectifier means controllable third switch means and said bidirectional reservoir inverter means to derive an effective said predetermined energy level at said node connection.

Power supply control apparatus employable with an input a.c. source of given frequency and amplitude for providing a regulated output to a load, comprising:

• positive and negative rail means for establishing a d.c. node connection having an effective predetermined energy level;
• capacitor means coupled with said rail means for providing energy storage at said node connection;
• an input converter including first switching means coupled with said rail means and connectable with said input a.c. source and controllable for applying an a.c. signal of select amplitude to said source at said given frequency and in select phase relationship therewith;
• an output converter including second switching means coupled with said rail means, energizable therefrom, connectable with said load and controllable for applying an a.c. output thereto;
• battery means of given storage level and capacity for providing a rechargeable energy reservoir;
• voltage level adjustment means having primary and secondary sides for selectively boosting voltages asserted at said primary side;
• bi-directional reservoir inverter means having a d.c. side coupled with said battery means and an a.c. side coupled with said voltage level adjustment means primary side for applying an a.c. output of given phase and frequency thereto;
• bi-directional a.c.-to-d.c. rectifier means having controllable third switching means coupled with said voltage level adjustment means secondary side and said rail means for association in energy transfer relationship with said d.c. node connection;
• and
• control means responsive to said a.c. source given amplitude and frequency and to said rail means energy level for controlling said first switching means to derive a said a.c. signal of amplitude value below that of said input a.c source selected to effect the passage of energy to said node connection to effectively maintain said predetermined energy level, and to control said bidirectional rectifier third switching means as a synchronous rectifier in phase coincidence with said a.c. output given phase in the presence of adequate said passage of energy from said input a.c. source.

Power supply control apparatus employable with an a.c. source input of given phase frequency and amplitude to provide a regulated output to a load, comprising:

• an input a.c.-to-d.c. converter having an a.c. side coupled with said a.c. source input and a d.c. side and controllabe to provide at said a.c. side a control a.c. signal in select phase relationship with said given phase and of select amplitude;
• rechargeable storage battery means having a given energy level and a capacity for providing energy in the form of direct current;
• node means in energy transfer communication with said d.c. side of said input a.c.-to-d.c. converter and with said rechargeable storage battery means for deriving a node connection exhibiting a predetermined energy level;
• an output d.c.-to-a.c. converter having a d.c. side coupled with said node connection and an a.c. side deriving a first output a.c. signal of predetermined frequency selected having a value greater than said given frequency;
• isolation transformer means having a primary winding coupled to receive said first output a.c. signal and having a secondary winding;
• a.c.-to-d.c. converter means having an a.c. side coupled with said isolation transformer means secondary winding and a d.c. side for providing a d.c. output;
• d.c.-to-a.c. converter means having a d.c. side coupled in energy receiving relationship with said d.c. output and an a.c. side deriving a second a.c. output connectable with said load;
• and
• control means responsive to said a.c. source given amplitude, to said node means energy level, and to said rechargeable storage battery means given energy level for controlling said input d.c.-to-a.c. converter to derive a said control a.c. signal select amplitude of value below said a.c. source given amplitude to effect maintenance of said node means predetermined energy level and maintenance of said rechargeable storage battery means given energy capacity.