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公开(公告)号：US09627961B1
公开(公告)日：2017-04-18
申请号：US14966109
申请日：2015-12-11
Inventor： Chi-Sheng Wu , Kuo-Kuang Jen , Hsuang-Chang Chiang , Tsang-Li Tai
CPC classification number: H02M3/04 , H02M3/1582 , H02M7/537 , H02M7/5387 , H02M2001/007
Abstract: A mixed power supply device includes a power supply component for providing a DC voltage; a DC-DC conversion module coupled to the power supply component to receive the DC voltage and output a stable DC voltage; a current transformation module coupled between the DC-DC conversion module and a load to receive the stable DC voltage and convert the stable DC voltage into an AC voltage; and a merging network switching switch coupled to the current transformation module to connect the current transformation module and a utility power network in parallel or disconnect the current transformation module from the utility power network, allowing a load to receive merging network mode-based power supply or standalone mode-based power supply, wherein, in the merging network mode, the current transformation module performs unbalanced current compensation on load unbalance of the load.
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2.发明授权公开(公告)号：US09450516B2
公开(公告)日：2016-09-20
申请号：US14198516
申请日：2014-03-05
Inventor： Hsuang-Chang Chiang , Chao-Tsung Ma , Kuo-Kuang Jen , Yi-Lun Chen
Abstract: The present invention relates to an inverter system for energy-storing microgrid and a controlling method thereof, wherein the inverter system for energy-storing microgrid is integrated with a detecting module, a controlling and processing module, a visual resistor algorithmic processor, and a PWM signal generator. Moreover, the controlling and processing module is installed with a power-voltage reducing function and a reactive power-frequency reducing function for making the controlling and processing module be able to properly distribute the intensity and output ratio of all the output currents of the inverters according to the charge states of battery modules and load currents. Therefore, the current supply of each of the parallel connected inverters in the inverter system can be automatically distributed and modulated for effectively providing necessary electric power to each of connected loads, respectively.
Abstract translation: 本发明涉及一种用于储能微电网的逆变器系统及其控制方法，其中用于存储微电网的逆变器系统与检测模块，控制和处理模块，可视电阻算法处理器和PWM 信号发生器。 此外，控制和处理模块安装有降压功能和无功功率降频功能，使控制和处理模块能够根据变频器的所有输出电流的强度和输出比正确分配 到电池模块的充电状态和负载电流。 因此，可以自动分配和调制逆变器系统中的每个并联逆变器的电流供应，以有效地为每个连接的负载提供必要的电力。
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公开(公告)号：US10833511B2
公开(公告)日：2020-11-10
申请号：US15834102
申请日：2017-12-07
Inventor： Chi-Sheng Wu , Gwo-Huei You , Hsuang-Chang Chiang , Tsang-Li Tai
Abstract: A battery cell management and balance circuit comprises multiple battery cell balance circuits, multiple battery cell monitor units, multiple battery module balance circuits and a battery management unit. The battery cell balance circuits connect to battery cells for executing a first charge or discharge command. The battery cell monitor units monitor battery cells for generating battery cell information and the first charge or discharge commands. The battery module balance circuits connect to battery modules for executing second charge or discharge commands. The battery management unit connect to the battery cell monitor units for receiving battery cell information and the battery module balance circuits for direct or indirectly generating the second charge or discharge commands to the battery module balance circuits. A battery system and a battery cell management and balance circuit method is also introduced.
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公开(公告)号：US09997993B1
公开(公告)日：2018-06-12
申请号：US15375209
申请日：2016-12-12
Inventor： Chi-Sheng Wu , Gwo-Huei You , Hsuang-Chang Chiang , Tsang-Li Tai
CPC classification number: H02M1/42 , H02M1/08 , H02M1/4208 , H02M1/4258 , H02M1/44 , H02M3/33546 , H02M2001/0009 , H02M2001/0067 , H02M2001/0074 , H02M2001/0077
Abstract: A single-phase bridgeless insulated power factor adjustment circuit includes an EMI filter module, low-frequency switching diode module, two switches and two insulated voltage transformation modules. The EMI filter module is coupled to an AC power. The low-frequency switching diode module is coupled to the EMI filter module. The two switches are coupled to the low-frequency switching diode module. The two insulated voltage transformation modules are coupled to one of the two switches. With the low-frequency switching diode module being in first ON state, one of the two switches turns on, and one of the two insulated voltage transformation modules turns on. With the low-frequency switching diode module being in second ON state, the other switch turns on, and the other insulated voltage transformation module turns on. Hence, the circuit is unlikely to fail, but features simple circuitry, incurs low costs, be compact, and achieves high conversion efficiency.
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公开(公告)号：US09847727B1
公开(公告)日：2017-12-19
申请号：US15364133
申请日：2016-11-29
Inventor： Kun-Feng Chen , Hsuang-Chang Chiang , Rong-Yang Wang , Chin-Yu Ho
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/1582 , H02M3/33523 , H02M3/33584 , H02M2001/0058 , H02M2001/007
Abstract: A half-bridge resonant bidirectional DC-DC converter circuit comprising a half-bridge buck-boost converter and a resonant DC-DC converter. The half-bridge buck-boost converter is coupled to an external DC power source to achieve a wide input voltage range. The resonant DC-DC converter is coupled to the half-bridge buck-boost converter to act as a later stage circuit of the half-bridge buck-boost converter. The resonant DC-DC converter is used to control the direction of the bidirectional power flow and respond to the half-bridge buck-boost converter under a fixed frequency mode to convert the input of the half-bridge buck-boost converter to an induced current.
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Patent Agency Ranking
公开(公告)号：US09735670B2
公开(公告)日：2017-08-15
申请号：US14969102
申请日：2015-12-15
Inventor： Chi-Sheng Wu , Gwo-Huei You , Hsuang-Chang Chiang , Tsang-Li Tai
CPC classification number: H02M1/4225 , H02M1/143 , H02M1/42 , H02M7/04 , H02M2001/0022 , H02M2001/0025 , H02M2003/1566 , Y02B70/126
Abstract: A power factor correction conversion device and control method thereof are adapted to send an AC signal to a power factor correction conversion device, convert the AC signal into a DC signal, and perform power factor correction of the DC signal, so as to change a power factor sent to a back-end load, wherein the control method includes a rectification step, a feedback step, a ripple calculating step, a ripple offsetting step, a logical computation step, a pulse width modulation step and a power factor correcting step. Hence, the second-order ripple component in a feedback signal is eliminated to thereby increase the response speed of the power factor correction conversion device and reduce the distortion rate of the current, thus increasing the power factor sent to the back-end load.
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7.发明授权公开(公告)号：US10807487B2
公开(公告)日：2020-10-20
申请号：US15836951
申请日：2017-12-11
Inventor： Chi-Sheng Wu , Chih-Hsien Chung , Hsuang-Chang Chiang , Tsang-Li Tai
Abstract: A battery management and balance circuit comprises multiple battery group balance circuits, multiple battery module balance circuits and a battery management unit. The battery group balance circuits connect to battery groups for executing first charge or discharge command. The battery management unit connect to the battery group balance circuits and the battery module balance circuits for generating the first and second charge or discharge commands to the battery module balance circuits. A battery system and a battery management and balance circuit method is also introduced.
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公开(公告)号：US10170985B1
公开(公告)日：2019-01-01
申请号：US15833263
申请日：2017-12-06
Inventor： Chi-Sheng Wu , Kuo-Kuang Jen , Hsuang-Chang Chiang , Tsang-Li Tai
Abstract: An apparatus for current estimation of a DC/DC converter includes a current sensing unit, a signal sampling unit, and a current estimator. The current sensing unit is for sensing a current passing through a switch of the DC/DC converter and converting the current into a voltage signal. The signal sampling unit, coupled to the current sensing unit, is for sampling the voltage signal so as to output a sampled signal. The current estimator, coupled to the signal sampling unit, is for determining a signal indicating estimated magnitude of an inductor current of the DC/DC converter, based on the sampled signal, a scale factor of the current sensing unit, a duty ratio of a driving signal for controlling the switch, an input voltage and an output voltage of the DC/DC converter. An apparatus for current estimation that can further control an averaged current of a DC/DC converter.
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公开(公告)号：US10063242B2
公开(公告)日：2018-08-28
申请号：US15372662
申请日：2016-12-08
Inventor： Chi-Sheng Wu , Kuo-Kuang Jen , Hsuang-Chang Chiang , Tsang-Li Tai
Abstract: A phase-locked loop method for use in utility electricity parallel-connection system is introduced. The phase-locked loop method comprises a conversion signal generating step, an error calculating step, a frequency correction signal obtaining step, an angle signal obtaining step, and a synchronous signal generating step to not only calculate an error value by detecting a utility electricity voltage, but also reduce or return-to-zero the error value by proportional integral adjustment. With the steps, the phase-locked loop method achieves synchrony precisely by eliminating input utility electricity voltage distortion and frequency variation. Furthermore, the phase-locked loop method advantageously features quick response and a wide frequency range and therefore is effective in tracking power generation facilities, such as a diesel generator, and expanding inverters.
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公开(公告)号：US09660515B1
公开(公告)日：2017-05-23
申请号：US14971008
申请日：2015-12-16
Inventor： Chi-Sheng Wu , Chih-Hsien Chung , Hsuang-Chang Chiang , Tsang-Li Tai
CPC classification number: H02M1/14 , H02M3/33507 , H02M3/3372 , H02M7/48 , H02M2001/007
Abstract: A control method for reducing second-order ripple is adapted to reduce second-order ripple on an input side of a DC-DC conversion device, wherein the input side of the DC-DC conversion device is coupled to a preceding voltage supply device, and an output side of the DC-DC conversion device is coupled to a DC-AC transforming device, characterized in that a voltage control device for controlling the preceding voltage supply device is designed according to a transfer function, and the transfer function is adjusted and controlled with an output voltage of the DC-DC conversion device and an amplitude voltage of pulse width modulation to reduce second-order ripple of an input voltage input to the input side of the DC-DC conversion device, thereby dispensing the need to increase circuits or increase capacitance of components and cutting costs.
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