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1.发明授权公开(公告)号：US10056756B2
公开(公告)日：2018-08-21
申请号：US15555079
申请日：2016-03-01
CPC分类号： H02J3/1828 , H04B3/54 , H04B3/542 , H04B3/546 , H04B2203/5416 , H04B2203/5491 , Y02E40/30
摘要： Audio Frequency Load Control (AFLC) signal processing electronics added to a power factor correction (PFC) unit allowing the AFLC system to operate without the need of large and heavy passive bypass or blocking filters at the PFC installations. The AFLC signal processing electronics a first group of additional electronics tuned to the AFLC frequency for detecting the AFLC carrier signal; and a second group of additional electronics for driving an AFLC impedance switch that is connected in parallel with an AFLC impedance. The AFLC impedance is connected in series with the PFC capacitors, and is sufficiently large to offer significant impedance in series with the PFC capacitors that allows the AFLC signal to bypass the PFC unit.
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公开(公告)号：US20170141692A1
公开(公告)日：2017-05-18
申请号：US15316162
申请日：2015-01-12
CPC分类号： H02M5/293 , G05F1/12 , G05F1/44 , G05F1/445 , H02J3/12 , H02J3/14 , H02J3/18 , H02J3/381 , H02J3/382 , H02J3/383 , H02J3/386 , H02J3/387 , H02M1/32 , H02M1/44 , H02M5/22 , H02M5/257 , H02M5/275 , Y02B10/14 , Y02E10/563 , Y02E10/763 , Y02E40/30 , Y10T307/352
摘要： An energy saving alternate current (AC) series voltage regulator comprises an AC high frequency (HF) series voltage buck power regulator, a bypass contactor (K1), a bidirectional AC semiconductor device (S1) connected in parallel with the bypass contactor and a control circuitry. Under the condition of an input AC mains voltage (Vin) drops below a specified and set optimum energy savings voltage or a lower selected voltage point, the control circuitry transitions both the slow bypass contactor and the fast bidirectional AC semiconductor device, then the AC high frequency (HF) series voltage buck power regulator are switched out to save the AC high frequency (HF) series voltage buck power regulator internal power electronics usage. Under this condition, the lower input AC mains voltage is directly delivered to an electrical load by the contactor bypass system, hence achieving more energy savings.
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公开(公告)号：US09979312B2
公开(公告)日：2018-05-22
申请号：US15316162
申请日：2015-01-12
IPC分类号： H02M5/293 , H02M1/44 , H02M1/32 , H02M5/257 , H02M5/275 , H02M5/22 , G05F1/445 , G05F1/12 , G05F1/44
CPC分类号： H02M5/293 , G05F1/12 , G05F1/44 , G05F1/445 , H02J3/12 , H02J3/14 , H02J3/18 , H02J3/381 , H02J3/382 , H02J3/383 , H02J3/386 , H02J3/387 , H02M1/32 , H02M1/44 , H02M5/22 , H02M5/257 , H02M5/275 , Y02B10/14 , Y02E10/563 , Y02E10/763 , Y02E40/30 , Y10T307/352
摘要： An energy saving alternate current (AC) series voltage regulator comprises an AC high frequency (HF) series voltage buck power regulator, a bypass contactor (K1), a bidirectional AC semiconductor device (S1) connected in parallel with the bypass contactor and a control circuitry. Under the condition of an input AC mains voltage (Vin) drops below a specified and set optimum energy savings voltage or a lower selected voltage point, the control circuitry transitions both the slow bypass contactor and the fast bidirectional AC semiconductor device, then the AC high frequency (HF) series voltage buck power regulator are switched out to save the AC high frequency (HF) series voltage buck power regulator internal power electronics usage. Under this condition, the lower input AC mains voltage is directly delivered to an electrical load by the contactor bypass system, hence achieving more energy savings.
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公开(公告)号：US09941698B2
公开(公告)日：2018-04-10
申请号：US15538662
申请日：2016-01-06
CPC分类号： H02J3/18 , H02J3/1814 , H02M5/04 , Y02E40/18
摘要： Legacy automatic variable capacitor KVAR compensation systems typically use either electromechanical devices such as relays or contactors of various forms and types to switch the selected capacitors in and out of the electrical system under some form of electronic control. These systems are slow and discontinuous in their ability to closely regulate the exact value of compensatory capacitance needed to compensate the variable and rapidly changing reactive power KVAR in the electrical power transmission and distribution networks. The present invention provides a fast response active KVAR compensator based on a variable transimpedance topology.
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公开(公告)号：US09819279B2
公开(公告)日：2017-11-14
申请号：US14565444
申请日：2016-04-11
CPC分类号： H02M5/22 , G05F1/44 , H02M1/08 , H02M5/293 , H02M2001/0009
摘要： An AC voltage regulator that regulates the output AC voltage level regardless of the varying AC input voltage utilizing high frequency series inductors that only process a proportion of the total output power and uses unipolar semiconductor low loss switches in series with one or more rectifiers.
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公开(公告)号：US10027120B1
公开(公告)日：2018-07-17
申请号：US15831383
申请日：2017-12-04
发明人： Jian Carlo Decena Zapata , Efren II Santos Cruzat , Neal George Stewart , Gordon Currie , Wing Ling Cheng
摘要： A high-efficiency system for conducting power factor (PF) and harmonics correction in an electrical network, comprising a controller; a digital PFC capacitor array comprising two or more passive PFC capacitors, providing fine steps increments in the PF correction; and linear PFC capacitor arrays, providing coarse steps increments in the PF correction. The PF correction in coarse steps increments and fine steps increments allow a total or near total PF correction without overcompensation. Optionally, the system further comprises a lower power active power filter (APF) configured to only target and eliminate or minimize harmonics in the electrical network.
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