Conveyance system with regenerative drive

A method of operating a regenerative drive of a conveyance system, the regenerative drive comprising a direct current (DC) bus, a converter comprising a first plurality of switching devices in selective communication with each phase of an alternating current (AC) power source and with the DC bus, and a machine control circuit comprising a second plurality of switching devices in selective communication with each phase of a machine and with the DC bus, the method comprising:

• driving movement of the machine with power from the AC power source using the regenerative drive, wherein the machine is arranged to move a conveyance apparatus of the conveyance system;
• when motion of the machine is being braked, harvesting power from the machine using the regenerative drive;
• switching a switching arrangement from a first condition, in which an energy harvesting device is disconnected from the machine control circuit of the regenerative drive, to a second condition in which the energy harvesting device is operatively connected to at least one switching device of the second plurality of switching devices of the machine control circuit;
• wherein the switching arrangement is connected between one phase of the machine control circuit and the energy harvesting device.