Single-phase inverter input voltage ripple modulation compensation method
A single-phase inverter, input voltage technology, applied in the direction of electrical components, output power conversion devices, etc., can solve the problem of poor compensation effect, suppress the influence of input voltage ripple, improve output quality, and reduce control. effect of time
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[0024] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.
[0025] like figure 2 As shown, the inverter system includes a DC voltage source composed of a lead-acid battery, an input filter capacitor, a single-phase full-bridge MOSFET inverter circuit, a power frequency step-up transformer, and a digital control system composed of an LM4F230 microprocessor and peripheral chips. device and other parts. The rated input voltage range is 20V~32V, the rated output voltage is 220V±5%, and the rated output frequency is 50Hz±0.5Hz. The clock frequency of the digital controller timer module is 80MHz, and the array length N is 256. At this time, the switching frequency of the inverter circuit is 25.6kHz, and the amplitude of the positive half-cycle sine law changes the array, that is, the maximum value of the timer count is 3125.
[0026] Aiming at the compensation link of the input voltage ripple of the full-brid...
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