Regenerative power utilization system, control method, and program

A regenerative power utilization system configured to utilize regenerative power generated by at least two types of motor systems, the at least two types of motor systems including:

• a first motor system including one or more first motors;
• and a second motor system including one or more second motors having a higher voltage specification than the one or more first motors, the regenerative power utilization system comprising:
• a power converter circuit of a voltage step up/down type, the power converter circuit being connected between a first bus line configured to supply electrical power to the first motor system and a second bus line configured to supply electrical power to the second motor system, the power converter circuit including a plurality of switch elements and configured to perform a switching operation on the plurality of switch elements;
• an electrical storage device connected to the power converter circuit either between one side and the power converter circuit, or between the other side and the power converter circuit, the one side including the first bus line, the other side including the second bus line;
• and
• a control unit configured to control the plurality of switch elements to charge the electrical storage device with the regenerative power,
• the control unit being configured to control the plurality of switch elements such that electrical energy stored in the electrical storage device is used as electrical energy for powering the first motor system when a particular condition is satisfied.