Table 1 Switching states of proposed topology.

From: A nine-level switched-capacitor multilevel inverter based on ANPC topology with optimized component count and suppressed charging current

Levels (\(\times {\text{V}}_{\text{dc}}\))

Switching states

Diode state

Effect on Capacitor

\({\text{D}}_{1}\)

\({\text{D}}_{2}\)

Csc1

Csc2

 + 1.00

\({\text{S}}_{1}\), \({\text{S}}_{4}\), \({\text{S}}_{8}\),\({\text{S}}_{10}\)

0

0

 + 0.75

\({\text{S}}_{1}\), \({\text{S}}_{4}\), \({\text{S}}_{9}\),\({\text{S}}_{10}\)

0

0

 + 0.50

\({\text{S}}_{1}\), \({\text{S}}_{3}\), \({\text{S}}_{6}\), \({\text{S}}_{8}\),\({\text{S}}_{10}\)

0

1

 + 0.25

\({\text{S}}_{1}\), \({\text{S}}_{3}\), \({\text{S}}_{6}\), \({\text{S}}_{8}\),\({\text{S}}_{11}\)

0

1

 + 0

\({\text{S}}_{1}\), \({\text{S}}_{3}\), \({\text{S}}_{8}\),\({\text{S}}_{11}\)

0

0

−0

\({\text{S}}_{2}\), \({\text{S}}_{6}\), \({\text{S}}_{8}\),\({\text{S}}_{10}\)

0

0

 − 0.25

\({\text{S}}_{2}\), \({\text{S}}_{3}\), \({\text{S}}_{6}\), \({\text{S}}_{7}\),\({\text{S}}_{10}\)

1

0

 − 0.50

\({\text{S}}_{2}\), \({\text{S}}_{3}\), \({\text{S}}_{6}\), \({\text{S}}_{8}\),\({\text{S}}_{11}\)

1

0

 − 0.75

\({\text{S}}_{2}\), \({\text{S}}_{5}\), \({\text{S}}_{7}\),\({\text{S}}_{11}\)

0

0

 − 1.00

\({\text{S}}_{2}\), \({\text{S}}_{5}\), \({\text{S}}_{8}\),\({\text{S}}_{11}\)

0

0

  1. (↑, ↓) denotes charging and discharging of capacitor.