Power converting system with a plurality of charging capacitors
First Claim
1. A power converting system comprising a load, a plurality of capacitors, a charge section for charging the respective capacitors to render their terminal voltages to be mutually different predetermined voltages, a load-use capacitor acting as a power source for the load, an inductor connected in series to the load-use capacitor, a plurality of switching elements respectively inserted between a series circuit of the load-use capacitor and inductor and the respective capacitors, and a control circuit for controlling the switching elements to vary both end voltages of the load-use capacitor into a pulsating waveform by sequentially connecting the respective capacitors alternatively to the series circuit.
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Accused Products
Abstract
A power converting system rendering an applied voltage to a load to be a continuous voltage waveform, wherein a plurality of capacitors are charged so that their terminal voltages will reach predertermined voltages mutually different, the respective capacitors are sequentially connected respectively through a switching element to a series circuit of an inductor and a load-use capacitor, the load-use capacitor is charged with a resonance current of the capacitor and inductor, and the applied voltage to the load-use capacitor is made to be a pulsating waveform by properly adjusting the terminal voltages upon charging of the respective capacitors as well as change-over timing of the respective switching elements.
52 Citations
29 Claims
- 1. A power converting system comprising a load, a plurality of capacitors, a charge section for charging the respective capacitors to render their terminal voltages to be mutually different predetermined voltages, a load-use capacitor acting as a power source for the load, an inductor connected in series to the load-use capacitor, a plurality of switching elements respectively inserted between a series circuit of the load-use capacitor and inductor and the respective capacitors, and a control circuit for controlling the switching elements to vary both end voltages of the load-use capacitor into a pulsating waveform by sequentially connecting the respective capacitors alternatively to the series circuit.
- 10. A power converting system comprising a load, a plurality of power supplying capacitors, a first inductor connected in series to a DC power source, means for charging through the first inductor the respective power supplying capacitors to a predetermined voltage, a load-use capacitor acting as a power source to the load, a second inductor connected in series to the load-use capacitor, a plurality of switching means connected respectively in series between a series circuit of the load and the second inductor and the respective power supplying capacitors, a control means for connecting the respective switching means sequentially alternatively to the series circuit of the load and the second inductor to vary both end voltages of the load-use capacitor to a pulsating wave shape, a charge current controlling capacitor for controlling a charging current to the respective power supplying capacitors, and means for charging and discharging the charge current controlling capacitor.
Specification