The power conversion system which uses the control type self-oscillation modulator, and that kind of modulator

摘要

The control type oscillation modulator, the comparator and the power amplification step and stability for pulse number modulation the 1st feedback expedient which guarantees oscillation state (21) and 1st forward expedient (22) has with the higher-order oscillation loop which it has. This modulator the load which is connected to the modulator vis-a-vis (5) in order value of the electric current which is supplied by the aforementioned power amplification step (i _L) to measure, designates the amperometry expedient which is formed as feature, possesses the transfer function which tries to form the aforementioned 1st feedback signal, the aforementioned 1st feedback expedient (21) the aforementioned measurable quantity which is supplied, the aforementioned measurable quantity (i _L) of on the basis possesses the transfer function which tries to form the aforementioned modulating signal the aforementioned 1st forward expedient (21), the aforementioned 1st feedback expedient and the input signal (V _i) of on the basis. Applied example is general DC-DC power conversion and the DC-AC power conversion which accompany induction load. With mounting which is desirable, it is the precise mutual conductance amplifier by electric current feedback. Furthermore with desirable execution form, as for the control type oscillation modulator, the precise voltage power amplifier is mounted with purpose of audio expansion.