达尔林普尔湾 (Dalrymple Bay) 煤碳码头位于澳大利亚昆士兰州海波因特 (Hay Point) 港口，其安装的新型装船机采用艾默生CT交流驱动器，构成了装船机的主要特色。巨型装船机为中央昆士兰 (Central Queensland) 的总共14个矿区（包括布莱尔阿索尔 (Blair Athol) 矿）提供服务，是Babcock & Brown基础建设扩展计划的一部分。　　达尔林普尔煤炭码头的标准卸载速度为每小时5500吨，每天可卸煤约15-18列火车，用来出口至日本、中国、印度及其他国家。在近期第6阶段扩建计划中，将新增一个泊位并安装新的装船机，与原有的两个泊位两台装船机一起，将装载能力提升至每年5600万吨。装煤机重1030吨，高49米，在布里斯本河 (Brisbane River) 制造，造成后由重型起重船运至达尔林普尔湾3号泊位。运输在落潮时进行，通过布里斯本大桥 (Brisbane Gateway Bridge) 时与桥体净空仅2.5米！　　承包商Clough Downer JV将所有与装煤机变速交流电动机控制相关的合同都交给了艾默生CT澳洲分部。艾默生CT的设计方案是通过DeviceNet实现所有驱动器与PLC的通信，通过编码器反馈实现电动机闭环控制，同时，所有驱动器都具有额外的板载处理能力。　　“尽管装煤机很大，但供驱动操纵台操作的空间却很有限。”艾默生CT悉尼本部的执行总监Ananda Sebastian说。　　“用户对我们基于Unidrive交流驱动器的方案非常满意，此方案中驱动器和开关装置背靠背安装于一个专门设计的紧凑型机柜中。在离开布里斯班河码头之前，我们必须调节吊臂驱动器降低吊臂，以便顺利通过大桥。在达尔林普尔湾安装之后，我们也很快完成了最终调试。客户对此非常满意。”　　装船机每小时可装载7200吨货物，可沿停泊船只在200 m长的码头 (1/3) 轨道上行驶，整个登岸码头长3.8 km，是澳大利亚最长的煤炭码头。吊臂梭形头的作用范围可覆盖整个货舱宽度，实现均匀加载，加载时使用套筒式装煤槽，将灰尘产生量控制至最小。此装煤槽可在货舱360°范围内装载煤炭，确保完全、均匀的装载。　　套筒式装煤槽绞盘系统配备两台55 kW的Unidrive，一台用于位置控制，一台带再生模式，在刹车时可将能量馈至电源。吊臂俯仰式起重机是一个500 kW的可再生系统，包括三台可进行电力分配的Unidrive和三台带有可再生模式的Unidrive。55 kW吊臂梭动绞盘系统具有再生性，配有一台位置控制Unidrive和一台带有可再生模式的Unidrive。　　沿泊位约200 m的行程由通过4台160 kW驱动器同步控制的28个电机进行驱动，另有4台160 kW驱动器提供再生电。　　通过DeviceNet从驱动软件和控制PLC获取反馈信息，PLC 利用这些信息控制钢索和软管卷盘的卷绕，从而使得无论在卷入还是卷出时，在钢索和软管上都保持一个恒定的进料角度。　　艾默生CT有能力提供新型起重机和设备更新的驱动方案。我们在全球主要市场区域都拥有资深的驱动专家，可为港口起重机原始设备制造商和港口操作员提供高质量服务，并给出最佳电气驱动方案。
主要优点● 尺寸紧凑● 通信方式可选● 编码器反馈● 具备板载处理能力● 无谐波，高效节能 的再生系统 附（原文）：Coal Loader Down Under Depends on Control Techniques Drives　　AC drives from Control Techniques feature on a new shiploader installed at the Dalrymple Bay Coal Terminal in the port of Hay Point, Queensland, Australia. The massive shiploader serves a total of 14 mines in Central Queensland including Blair Athol and is part of Babcock & Brown Infrastructures expansion plans.　　The coal terminal unloads about 15 - 18 trains a day at the nominal rate of 5,500 tonnes per hour, for export to Japan, China and India, amongst others. The recent Stage 6 Expansion, added a new berth and the installation of the new ship loader to the existing 2 berths/2 shiploader combination, increasing capacity to 56 million tonnes pa.　　The coal loader, weighing 1030 tonnes and 49 metres high, was built on the Brisbane River and moved by a heavy lift ship to the Dalrymple Bay Berth No 3. The operation was synchronised to coincide with a low tide to give a mast clearance of just 2.5 metres under the Brisbane Gateway Bridge!　　Control Techniques Australia was awarded the contract for the control of all variable speed AC motors on the machine by contractors Clough Downer JV. Control Techniques solution was for a scheme whereby all drives communicated with a PLC via DeviceNet, with encoder feedback giving closed loop motor control and all drives featured additional on-board processing.　　“Despite the size of the coal loader, space for drives cubicles was limited,” says Ananda Sebastian, managing director of Control Techniques Australia Pty, based in Sydney.　　“The client was pleased with our solution based on Unidrive AC drives and drives and switchgear were mounted back-toback in specially designed compact cubicles. We had to commission the drives for the boom before it left the dock in the Brisbane River so that the boom could be lowered to pass under the Gateway bridge. Once installed at Dalrymple Bay, we completed the final commissioning, which was completed very quickly to the client’s full satisfaction.”　　The 7,200 tonne per hour shiploader travels alongside a berthed ship on rails on a 200 metre wharf (1 of 3) fed by a 3.8 kilometre long jetty, the longest bulk coal jetty in Australia. Reach across the width of the holds is provided by a shuttling head on the boom to ensure even loading and a telescoping loading chute minimises the generation of dust. This chute can direct coal through 360° around the hold to make sure the hatch is fully and evenly loaded.　　The telescopic chute winch system features two 55 kW Unidrives, one for position control, one in regenerative mode, to feed power back to the supply during braking. The boom luffing winch is a 500 kW regenerative system, with three Unidrives power sharing and a further three in regenerative mode. The 55 kW boom shuttle winch system is also regenerative with a position control Unidrive and one in regen mode.　　The long travel of about 200 metres along the berth is provided by 28 motors controlled in synchronism by four 160 kW Unidrives with a further four units giving power regeneration.　　Using feedback from the drives’ software to the controlling PLC via DeviceNet, the PLC controls the reeling of the cable and hose reels to maintain a constant feed angle on the cable and hose whether reeling in or paying out.　　Control Techniques has the capacity to deliver drive solutions for both new crane projects as well as retrofit installations. With our qualified specialist drive engineers, based in key global regions, we are able to provide high quality assistance to Port Crane OEMs and Port Operators with optimised electrical drive solutions.KEY BENEFITS● COMPACT SIZE● COMMUNICATION OPTIONS● ENCODER FEEDBACK● ON-BOARD PROCESSING● ZERO HARMONICS, ENERGY EFFICIENT REGENERATIVE SYSTEM　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　（自动化网莫铭编辑）