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1. 发明授权

US5257174A Engine-driven power generating system with over-current protection and stator teeth with grooves on a top surface 失效
标题翻译：具有过电流保护功能的发动机驱动发电系统和顶面凹槽的定子齿
公开(公告)号：US5257174A
公开(公告)日：1993-10-26
申请号：US661900
申请日：1991-02-27
申请人： Kazuyuki Ogiwara , Keisuke Okada , Hiroshi Kobiyama
发明人： Kazuyuki Ogiwara , Keisuke Okada , Hiroshi Kobiyama
IPC分类号： H02H7/12 , H02H7/122 , H02K1/16 , H02M5/458 , H02M7/48
CPC分类号： H02H7/122 , H02K1/16 , H02M5/458 , H02M7/53871 , H02K2201/06
摘要： An engine-driven power generating system having a bridge circuit section in which low-frequency switching elements are driven alternately by low-frequency drive signals, and high-frequency switching elements driven by high-frequency drive signals during the ON period of the low-frequency switching elements are connected in a bridge network, and an inverter circuit section having a drive signal supply circuit for supplying low-frequency and high-frequency drive signals are each supplied to the low-frequency and high-frequency switching elements that form a pair; the a-c voltage generated by an engine-driven a-c generator is converted into d-c voltage that is in turn converted into a predetermined level of low-frequency a-c voltage; characterized in that an overcurrent detecting circuit for detecting an overcurrent flowing in the bridge circuit section at a level higher than a predetermined level, a drive-signal control circuit that outputs to a drive-signal supply circuit, when the overcurrent detecting circuit detects an overcurrent during a half-cycle of the low-frequency signal in which the low-frequency switching element is turned on, a signal which turns off at least any one of the low-frequency and high-frequency switching elements to be turned on during the half-cycle after the detection of the overcurrent, and a low-pass filter for obtaining a sine-wave waveform on an output end are provided.
摘要翻译：一种具有桥式电路部分的发动机驱动的发电系统，其中低频开关元件由低频驱动信号交替驱动;以及高频开关元件，由高频驱动信号驱动，频率开关元件连接在桥式网络中，并且具有用于提供低频和高频驱动信号的驱动信号供给电路的逆变器电路部分分别提供给形成一对的低频和高频开关元件 ; 由发动机驱动的a-c发电机产生的a-c电压被转换成d-c电压，其又转换成预定水平的低频a-c电压; 其特征在于：过电流检测电路，用于检测在高于预定电平的电桥电路部分中流过的过电流;驱动信号控制电路，当过电流检测电路检测到过电流时，向驱动信号供给电路输出在低频开关元件导通的低频信号的半周期期间，在半频开关元件中的至少任一个低频开关元件和高频开关元件接通的信号被截止在检测到过电流之后进行循环，并且提供用于在输出端获得正弦波波形的低通滤波器。

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