Arrangement and method in connection with a transport system

A control arrangement of a transport system, which transport system comprises:

• a motor for moving a transport appliance;
• a power supply circuit of the motor connected between the motor and a power source that is limited (Plim) in its dimensioning;
• an energy storage, limited (Elim) in its capacity, fitted in connection with the power supply circuit of the motor, for supplying power between the energy storage and the power supply circuit of the motor;
• a determination of a charging status (EQ) of the energy storage;
• a determination of a movement reference of the transport appliance;
• and
• a control of the movement of the transport appliance as a response to the movement reference of the transport appliance,
• wherein the movement reference of the transport appliance is determined based on a travel distance of the transport appliance and at least one of an amount of energy that can be discharged from the energy storage and an amount of energy that can be charged into the energy storage, and
• wherein a limit value is set for the travel distance of the transport appliance, and the movement reference for the transport appliance is limited to a maximum value when the travel distance exceeds the limit value.

A method in connection with a transport system, said method comprising the steps of:

• fitting a motor to the transport system for moving a transport appliance;
• connecting a power supply circuit of the motor between the motor and a power source that is limited (Plim) in its dimensioning;
• fitting an energy storage that is limited (Elim) in its capacity in connection with the power supply circuit of the motor, for supplying power between the power supply circuit of the motor and the energy storage;
• determining a charging status (EQ) of the energy storage;
• determining a movement reference of the transport appliance;
• controlling the motion of the transport appliance as a response to the movement reference of the transport appliance;
• and
• wherein the step of determining the movement reference of the transport appliance is based on a travel distance of the transport appliance and an amount of energy that can be discharged from the energy storage when the transport appliance moves vertically in a heavy direction and is determined based on the travel distance of the transport appliance and an amount of energy that can be charged into the energy storage when the transport appliance moves vertically in a light direction that is opposite to the heavy direction.

A method in connection with a transport system, said method comprising the steps of:

• fitting a motor to the transport system for moving a transport appliance;
• connecting a power supply circuit of the motor between the motor and a power source that is limited (Plim) in its dimensioning;
• fitting an energy storage that is limited (Elim) in its capacity in conection with the power supply circuit of the motor, for supplying power between the power supply circuit of the motor and the energy storage;
• determining a charging status (EQ) of the energy storage;
• determining a movement reference of the transport appliance;
• controlling the motion of the transport appliance as a response to the movement reference of the transport appliance;
• determining a limit value for the travel distance of the transport appliance;
• and
• limiting the movement reference of the transport appliance to a maximum value when the travel distance exceeds the limit value,
• wherein the step of determining the movement reference of the transport appliance is based on a travel distance of the transport appliance and at least one of an amount of energy that can be discharged from the energy storage and an amount of energy that can be charged into the energy storage.