{
  "$type": "site.standard.document",
  "description": "Systems and methods are provided for controlling an uninterruptible power supply (UPS) to transition between three- or higher-level operation and two-level operation in a neutral-point-clamped (NPC) inverter (22). In an example, a UPS system (10) includes an NPC inverter (22) and a controller (24)…",
  "path": "/patents/978792",
  "publishedAt": "2014-02-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J9/062",
    "GEN ELECTRIC [US]"
  ],
  "textContent": "Systems and methods are provided for controlling an uninterruptible power supply (UPS) to transition between three- or higher-level operation and two-level operation in a neutral-point-clamped (NPC) inverter (22). In an example, a UPS system (10) includes an NPC inverter (22) and a controller (24). The NPC inverter (22) may supply power to a load (14). The controller (24) may control the inverter (22) to operate in a three-level mode or higher when the load (14) is substantially balanced and to operate in a two-level mode when the load (14) is substantially unbalanced.",
  "title": "Apparatus and method for an adaptive level transition of an NPC-inverter within a transformerless uniterruptible power supply"
}