This paper presents a ring oscillator with the function of the oscillation controlled for wireless sensor systems (WSSs). The proposed oscillator consists of a NAND gate, 4 inverters, and 1-, 3-, 9-times buffer stage. Operation of it is controlled by the NAND gate. The oscillator can reduce the power loss because the oscillator is oscillated during only… (More)
This paper presents an analysis of characteristics of choke-input-type diode rectifier circuit on three-phase rectangular-voltage-fed distribution system. The validity of the analysis has been confirmed by experiments using the 2.4 kW prototype.
This paper suggests the new modulation method of the multi-level double converter system used for static synchronous compensator for distribution power system (D-STATCOM). The proposed modulation method can change the modulation factor for each level of the converter to control the balance of each dc capacitor voltage and also can reduce the higher… (More)