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1. 发明授权

US5808450A Special alternator assembly with an inherent ballast impedance characteristic for lighting systems 失效
标题翻译：具有照明系统固有镇流器阻抗特性的特殊交流发电机组件
公开(公告)号：US5808450A
公开(公告)日：1998-09-15
申请号：US698134
申请日：1996-08-15
申请人： Stanley S. Chula , Gary L. Schurter , Lowell R. Stuebinger , Thomas H. Coleman, Jr.
发明人： Stanley S. Chula , Gary L. Schurter , Lowell R. Stuebinger , Thomas H. Coleman, Jr.
IPC分类号： H02K3/04 , H02K11/00 , H02K16/00 , H02K17/42 , H02K19/20 , H02K21/14 , H05B41/16 , H02P9/00
CPC分类号： H05B41/16 , F21L13/00 , H02K11/0094 , H02K11/33 , H02K16/00 , H02K3/04 , H02K17/42 , H02K19/20 , H02K21/14
摘要： An engine-driven alternator assembly includes an output winding having an internal impedance characteristic similar to a separate stationary ballast for high intensity discharge lamps. The output winding is direct connected to lamps in a mobile light tower application having four HID lamps. The alternator assembly includes four separate alternator units each having an output winding wound to establish the inherent internal impedance to provide a ballast source for the connected lamp. Each alternator unit has its rotor mounted on a common shaft connected to the shaft of the engine. Each alternator unit establishes an open circuit voltage to strike an arc across the HID lamp and then a sustaining voltage to maintain current flow as well as limiting the current to the lamp. The alternator unit has a high frequency output, preferably within 200 to 600 hertz. The alternator unit is a permanent magnet alternator, a switched reluctance alternator, an induction alternator, or a wound synchronous alternator. A full wave bridge may be connected across the alternator output to supply the limited direct current to the lamp, and the engine may be controlled to create the voltage change.
摘要翻译：发动机驱动的交流发电机组件包括具有类似于用于高强度放电灯的单独固定镇流器的内部阻抗特性的输出绕组。输出绕组直接连接到具有四个HID灯的移动光塔应用中的灯。交流发电机组件包括四个单独的交流发电机单元，每个单独的交流发电机单元具有缠绕的输出绕组，以建立固有的内部阻抗，以为连接的灯提供镇流器源。每个交流发电机单元的转子安装在与发动机的轴连接的公共轴上。每个交流发电机单元建立开路电压，以穿过HID灯发出电弧，然后建立维持电压以维持电流流动，并限制电流到灯。交流发电机单元具有高频输出，优选在200至600赫兹之间。交流发电机单元是永磁式交流发电机，开关磁阻交流发电机，感应交流发电机或卷绕同步交流发电机。交流发电机输出端可以连接全波桥，以将有限的直流电流提供给灯，并且可以控制发动机以产生电压变化。

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