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首页> 外文会议>Powersystems world conference exhibit >Battery Reliability: Preventing the 'Whiplash' Effect with Flywheel Technology Increases Battery Life and the Reliability of UPS Systems
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Battery Reliability: Preventing the 'Whiplash' Effect with Flywheel Technology Increases Battery Life and the Reliability of UPS Systems

机译：电池可靠性：防止与飞轮技术的“鞭打”效果增加了电池寿命和UPS系统的可靠性

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UPS battery failures are the nightmare of facility managers in mission critical applications. Can flywheels mitigate such problems? The experience with flywheels demonstrates that they can. At Pentadyne we believe there are two appropriate applications for a flywheel energy storage system with a UPS. One application is for the VSS to be installed in place of the battery when an external generator or other source can be brought on-line. The VSS provides the energy to support the DC bus and ride through the transition to a generator. The other application is to place the VSS in parallel with the battery and eliminate the 'coup de fouet'. This approach is attractive to users who, for whatever reason, cannot give up their batteries entirely, but want a better battery experience. Some users feel that if the generator does not start they need time to shut down or attempt a manual start. For these rare but possible scenarios, mission critical facilities still depend on the battery to perform when called upon. Therefore ensuring that the battery is always in the highest state of reliability is very desirable. The 'coup de fouet' is a major wear-and-tear factor that depletes a battery, leading to shorter battery life and poor reliability. It occurs each time the battery is discharged whether due to long-term outages or, more frequently, shorter-term voltage sags and utility reclosure operations. By using a VSS to handle discharge activity the battery remains essentially unused. In other words, by staying "off the battery" the stress inflicted by the "coup de fouet" is prevented. Its capacity is preserved and its life will not be depleted. It will remain in a state of higher reliability and therefore higher availability. The combination of a UPS with battery plus a Pentadyne VSS is more reliable than the battery-only system. With a flywheel in parallel, the battery will achieve a much longer life. It is realistic to expect obtaining closer to the full operational design life of the battery. Where UPS systems have two strings of batteries connected in parallel, or a redundant string configuration, a superior approach would be to use the VSS flywheel to replace one of the strings to protect the single string to gain the same reliability improvement as above. Besides the higher reliability benefit there are substantial financial benefits too. Since the flywheel protects the battery, individual cells or the entire battery will not need to be replaced as often; battery and cell replacement costs can be deferred. The VSS is engineered to run for 15 years without major maintenance, owing to its magnetic bearings and internal vacuum pump, so its maintenance costs are dramatically less than compared to maintaining a battery. It is energy efficient, consuming only 120 Watts when idling, and energy consumption costs will be significantly reduced if the VSS replaces a battery. Economically, the VSS is very competitive compared to a battery over a 2-5 year period, and does not carry the same financial liabilities as a battery. To make it even more financially attractive, leasing programs are also available for the VSS. In conclusion, the Pentadyne VSS is both a technically and financially viable solution to battery reliability problems. Ultimately, the Pentadyne VSS provides greater reliability and lower ownership and operational costs for owners of UPS systems.
机译：UPS电池故障是关键任务应用程序中设施管理人员的噩梦。 Flywheels可以减轻这些问题吗？ Flywheels的经验表明他们可以。在Pentadyne，我们相信飞轮储能系统具有两个适当的应用。一个应用程序是当外部发电机或其他源可以在线时安装到电池的VSS。 VSS提供能量来支持直流总线并乘坐到发电机的过渡。另一个应用程序是将VSS与电池并联，并消除“Coup De Fouet”。这种方法对用户的吸引力是谁，无论出于何种原因，不能完全放弃他们的电池，而是想要更好的电池体验。有些用户觉得如果生成器不开始，则需要时间关闭或尝试手动启动。对于这些罕见但可能的情况，使命关键设施仍然依赖于电池在呼叫时执行。因此，确保电池总是处于最高的可靠性状态是非常理想的。 'Coup de Fouet'是一种主要的磨损因素，可耗尽电池，导致电池寿命更短，可靠性差。当电池放电时，它是否由于长期停滞或更频繁地，更短，电压凹陷和公用设施闭合操作而出现。通过使用VSS来处理放电活动，电池基本仍未使用。换句话说，通过保持“关闭电池”，防止了“Coup de Fouet”造成的应力。它的能力被保存，其生命不会耗尽。它将保持在更高的可靠性状态，因此更高的可用性。带电池加上Pentadyne VSS的UPS的组合比仅电池系统更可靠。通过平行的飞轮，电池将达到更长的寿命。预计将获得更接近电池的全部运行设计寿命是现实的。其中UPS系统有两个并联连接的电池，或者冗余字符串配置，卓越的方法是使用VSS飞轮来替换其中一个串以保护单个串以获得如上所述的相同可靠性改进。除了更高的可靠性效益，还有很大的经济利益。由于飞轮保护电池，因此不需要经常更换单个电池或整个电池;电池和细胞更换成本可以推迟。由于其磁性轴承和内部真空泵，VSS设计为运行15年，无需重大维护，因此其维护成本与维护电池相比，其维护成本显着小。如果VSS替换电池，它是节能，仅在怠速时消耗120瓦，并且能量消耗成本将显着降低。在经济上，与2-5期间的电池相比，VSS与电池相比非常有竞争力，并且不会将与电池相同的金融负债。为了使其更具资金上有吸引力，租赁计划也适用于VSS。总之，五达达斯与电池可靠性问题的技术和经济上可行的解决方案。最终，Pentadyne VSS为UPS系统的所有者提供了更高的可靠性和较低的所有权和运营成本。

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