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公开(公告)号：US3842338A
公开(公告)日：1974-10-15
申请号：US35288073
申请日：1973-04-20
Applicant: GEN ELECTRIC
Inventor： WALDEN J
CPC classification number: H05B6/062 , H02M7/523 , H05B6/1281
Abstract: A single-thyristor series resonant inverter used to drive an induction heating coil is operated at a variable frequency over a limited ultrasonic range in known manner to obtain high output power control. The low output power range is extended by using the secondary winding of a reset transformer and a series connected auxiliary solid state device to limit the amount of recharge energy supplied to the commutating capacitor by the primary winding during non-oscillating intervals of the inverter.
Abstract translation: 用于驱动感应加热线圈的单晶闸管串联谐振逆变器以已知方式在有限的超声波范围内以可变频率工作，以获得高输出功率控制。 通过使用复位变压器的次级绕组和串联的辅助固态装置来扩展低输出功率范围，以在逆变器的非振荡间隔期间限制由初级绕组提供给换向电容器的再充电能量。
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2.发明授权Power supply including inverter having multiple-winding transformer and control transistor for controlling main switching transistors and providing overcurrent protection 失效电源包括具有用于控制主开关晶体管和提供过流保护的多绕组变压器和控制晶体管的逆变器
公开(公告)号：US3781638A
公开(公告)日：1973-12-25
申请号：US3781638D
申请日：1972-06-28
Applicant: GEN ELECTRIC
Inventor： ANDERSON T , WALDEN J
CPC classification number: H02M5/458 , H02M3/3388
Abstract: A power supply includes a high frequency inverter comprising a pair of main switching transistors for alternately conducting current from a d.c. source through different winding halves of a multi-winding transformer. A starting resistor, connected between the source and the base of a selected one of the main transistors, initiates base-emitter current flow to make the transistor conductive. A control transistor turns the then conducting main transistor ''''off'''' in response to a predetermined current level through the conducting main transistor; the predetermined current level having been reached in response to the onset of magnetic saturation of the core of the transformer. Subsequently, a voltage induced in a third transformer winding initiates base-emitter current flow in the other main transistor thereby turning it ''''on''''. Also, the control transistor serves to turn either main switching transistor ''''off'''' when the current therethrough is excessive, (e.g., overload or short-circuit condition).
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公开(公告)号：US3821630A
公开(公告)日：1974-06-28
申请号：US38498973
申请日：1973-08-02
Applicant: GEN ELECTRIC
Inventor： KORNRUMPF W , WALDEN J , WALKER L
CPC classification number: H02H7/1225 , H02M3/158 , Y02B70/1425
Abstract: A direct current-to-alternating current inverter employing a silicon controlled rectifier (SCR) is described in which control means is provided to promptly and automatically restore inverter operation after a commutation failure. The control means includes means for sensing the instantaneous voltage across the SCR and comparing this voltage with a threshold voltage. Whenever the SCR voltage is lower than the threshold voltage, the gating pulses to the SCR and a series connected chopper of the inverter are inhibited. When the threshold voltage is exceeded, gating pulses are passed to the SCR and the chopper, thereby providing normal inverter operation.
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公开(公告)号：US3761667A
公开(公告)日：1973-09-25
申请号：US3761667D
申请日：1971-12-27
Applicant: GEN ELECTRIC
Inventor： WALDEN J
CPC classification number: H05B6/062 , H02M7/523 , H05B6/1281
Abstract: A single-thyristor series resonant inverter used to drive an induction heating coil in a cooking appliance is operated at a variable frequency over a limited ultrasonic range in known manner to obtain high output pwer control. The low output power range is extended by using the secondary winding of a reset transformer and a series connected auxiliary solid state device to limit the amount of recharge energy supplied to the commutating capacitor by the primary winding during nonoscillating intervals of the inverter.
Abstract translation: 用于驱动烹饪器具中的感应加热线圈的单晶闸管串联谐振逆变器以已知方式在有限的超声波范围内以可变频率运行，以获得高输出波导控制。 通过使用复位变压器的次级绕组和串联的辅助固态装置来扩展低输出功率范围，以在逆变器的非振荡间隔期间限制由初级绕组提供给换向电容器的再充电能量。
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