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Development of a Long Life Uninterruptible Power Supply Using a Flywheel Energy Storage Unit.

使用飞轮储能装置开发长寿命不间断电源。

基本信息

批准号：
03452143
负责人：
TAKAHASHI Isao
金额：
$ 3.65万
依托单位：
Nagaoka University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1992
项目状态：
已结题

项目摘要

An uninterruptible power supply composed of a flywheel and a motor/generator for energy storage unit is developed. The main results obtained are as follows;1.The 10KW-1min. flywheel was designed and constructed for trial, but not yet examined by vacuum system accidents.2.For vacuum system improvements, the titanium getter was replaced by the good performance zirconium getter. From long term experiments, the vacuum was not maintained by leak through O-rings and the castg vessel.3.High efficiency of 93% was achieved by using switching loss recover circuits and amorphous core reactors.4.Short life electrolytic capacitors were replaced by small muF film capacitors by applying capacitor less inverter theories. The minimum value of capacitance can be decreased to 200muF in 10KW system having voltage build-up ability.5.By using high response current control of the PWM inverter, 99% input power factor and 2% output voltage distortion were obtained, simultaneously.7.Short life photo-couplers of the gate isolation were also removed by replacing pulse-transformers and transistor discharge circuits. As a result, the system will have over 15 years life.8.By use of direct torque control for motor/generator power, the sensorless drive of the flywheel was realized. It made a simple vacuum vessel and high speed power regeneration. All experimental data shown above present the validity of the flywheel use for energy storage units of uniterruptible power supplies.

研制了一种由飞轮和电动机/发电机组成的储能单元不间断电源。主要研究结果如下：1. 10 KW-1 min.飞轮是为试验而设计和制造的，但尚未通过真空系统事故进行检验。2.为改进真空系统，用性能良好的锆吸气剂取代钛吸气剂。通过长期实验，发现真空不会通过O形环和铸造容器泄漏来维持; 3.采用开关损耗恢复电路和非晶铁芯电抗器，获得了93%的高效率; 4.应用无电容逆变器理论，用小μ F薄膜电容器取代了短寿命的电解电容器。采用高响应电流控制的PWM逆变器，使输入功率因数达到99%，输出电压畸变率达到2%。7.通过更换脉冲变压器和晶体管放电电路，取消了寿命短的光电耦合器的栅极隔离。8.采用直接转矩控制技术对电机/发电机的功率进行控制，实现了飞轮的无速度传感器驱动。它制作了一个简单的真空容器和高速功率再生。以上所示的所有实验数据表明飞轮用于不间断电源的能量存储单元的有效性。