| 摘要 |
PURPOSE:To maintain a control response constant irrespective of the magnitude of an input voltage by forming a reference signal waveform as a function waveform for correcting the nonlinearity between the pulse width and the output voltage of an inverter. CONSTITUTION:A DC power from a DC power source 1 is converted by an inverter 2 into an AC power, and supplied through a filter 3 into a load 4. The AC voltage is detected by a voltage detector 11 to obtain a control signal G so that a deviation between the voltage signal and a set signal from a voltage setter 15 becomes zero, a comparator 16 compares the signal G with a signal F from a reference function signal generator 21 to decide the pulse width (h) of the inverter 2. In this case, the signal F is formed in a waveform so that the output variation of a voltage regulator 14 becomes constant with respect to the variation in the input voltage E within the input voltage variation range of the inverter 2. |
