Power supply system
First Claim
Patent Images
1. A power supply system comprising:
- a source providing three phase AC power at a predetermined frequency, said source having output lines respectively corresponding to each of the phases of said AC power;
a plurality of rectifiers connected to respective pairs of said output lines;
a plurality of inverters each connected to an output of a respective one of said rectifiers and comprising an oscillation circuit, each said inverter providing by means of said oscillation circuit an oscillating output signal at a predetermined higher frequency than said predetermined frequency, the output signals of all of said inverters being at the same predetermined higher frequency;
a control means for operating the oscillation circuits of said inverters, said control means synchronizing the oscillation period of the oscillation circuits of the inverters such that the output signals of said inverters have the same zero cross point timing;
means connected to the outputs of said inverters for superposing in series and phase the outputs of said inverters to produce a high frequency power source.
1 Assignment
0 Petitions
Accused Products
Abstract
A power supply system is disclosed in which each of the phases of a three phase AC source are rectified and inverted. During inversion high frequency signals are obtained corresponding to the phases of the AC source which are synchronized so that their zero cross points occur at the same time. The high frequency signals are superposed in series to produce an output signal for a load which has a constant power and diminished current distortion.
-
Citations
2 Claims
-
1. A power supply system comprising:
-
a source providing three phase AC power at a predetermined frequency, said source having output lines respectively corresponding to each of the phases of said AC power; a plurality of rectifiers connected to respective pairs of said output lines; a plurality of inverters each connected to an output of a respective one of said rectifiers and comprising an oscillation circuit, each said inverter providing by means of said oscillation circuit an oscillating output signal at a predetermined higher frequency than said predetermined frequency, the output signals of all of said inverters being at the same predetermined higher frequency; a control means for operating the oscillation circuits of said inverters, said control means synchronizing the oscillation period of the oscillation circuits of the inverters such that the output signals of said inverters have the same zero cross point timing; means connected to the outputs of said inverters for superposing in series and phase the outputs of said inverters to produce a high frequency power source. - View Dependent Claims (2)
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeMatsushita Electric Works Ltd (Panasonic Holdings Corporation)
-
Original AssigneeMatsushita Electric Works Ltd (Panasonic Holdings Corporation)
-
InventorsMaeda, Takayoshi, Tomofuji, Yoshiaki
-
Primary Examiner(s)Beha, Jr., William H.
-
Assistant Examiner(s)STERRETT, JEFFREY L
-
Application NumberUS06/440,425Time in Patent Office1,001 DaysField of Search363/34, 363/36, 363/37, 363/38, 363/39, 363/44, 363/67, 363/68, 363/148, 363/151, 363/71, 363/72US Class Current363/36CPC Class CodesH02M 3/285 Single converters with a pl...H02M 7/48 using discharge tubes with ...
