Phase commutation failure detection method and device, equipment, storage medium and program product

The invention relates to a commutation failure detection method and device, equipment, a storage medium and a program product. The method comprises the following steps: firstly, determining a target phase in a non-commutation state from each phase of a Y bridge of the converter; then, detecting whet...

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Bibliographische Detailangaben
Hauptverfasser: LIU BAISHUANG, LI LIN, DAI SHULONG, XIN LIANG, ZHOU YASHU, XU XUEHAI, HOU YUNCHUAN, TENG ZHAOLIN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a commutation failure detection method and device, equipment, a storage medium and a program product. The method comprises the following steps: firstly, determining a target phase in a non-commutation state from each phase of a Y bridge of the converter; then, detecting whether the Y bridge meets a first commutation success condition or not; if the first commutation success condition is not met, a first converter valve group with commutation failure is determined from converter valves contained in all phases, except the target phase, of the Y bridge, if the first commutation success condition is met, whether a D bridge of the converter meets a second commutation success condition or not is detected, and finally, under the condition that the D bridge does not meet the second commutation success condition, the converter valve group with the commutation failure is determined. And determining a second converter valve group with commutation failure from the converter valves contained in th