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| 400Hz System |
| Inverter output transformer by stray inductance output filter inductance |
| Used for medium and high-frequency online UPS circuit |
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Used for medium and high-frequency online UPS circuit, the inverter is in SPWM mode, e.g. turning the stable DC voltage which is by commercial power rectified and storage battery output, and than boosted by the transformer. Meanwhile using the stray inductance of the transformer to parallel in a filter capacitor for filtering to receive a pure sinusoidal. Thus there is no need to fix a filter inductor and the sinusoidal has a little distortion.
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