Control device for elevator

A control device for an elevator, comprising:

• a first power converter;
• a second power converter;
• and
• a switcher,
• the first power converter being operable as a regenerative converter,
• the first power converter being operable as an inverter,
• the second power converter being operable as a regenerative converter,
• the second power converter being operable as an inverter,
• the regenerative converter having a function of converting power to DC power and a function of converting DC power to power,
• the inverter having:
• a function of converting DC power to AC power;
• a function of supplying the AC power to an electric power generator;
• a function of receiving regenerated power from the electric power generator;
• and a function of converting the regenerated power to DC power,
• the switcher being configured to selectively achieve:
• a first circuit configuration that causes the first power converter to operate as the regenerative converter, and also causes the second power converter to operate as the inverter;
• and
• a second circuit configuration that causes the second power converter to operate as the regenerative converter, and also causes the first power converter to operate as the inverter.