Zero-offset voltage feedback for AC power supplies
    4.
    发明申请
    Zero-offset voltage feedback for AC power supplies 有权
    交流电源的零偏置电压反馈

    公开(公告)号:US20160344403A1

    公开(公告)日:2016-11-24

    申请号:US14999526

    申请日:2016-05-19

    IPC分类号: H03M1/12 H02M3/157

    摘要: A high voltage AC measurement method and circuit is disclosed to measure with zero offset and mirrored distortion based on hybrid chopping and fully differential signal path. There is a scheme with hybrid chopping and dual mixed signal paths. It applies high frequency chopping to the voltage measurement signal before the low-voltage signal conditioning, then samples and converts it to digital with two simultaneous ADCs, and finally demodulate the chopped signal by software. This technique not only reduces DC errors and drift but also cancels the distortion asymmetry caused by ADC non-linearity. The resultant DC accuracy and resolution can be significantly smaller than 1 LSB.

    摘要翻译: 公开了一种基于混合斩波和全差分信号路径的零偏移和镜像失真的高压AC测量方法和电路。 有混合斩波和双混合信号路径的方案。 在低电压信号调理之前,将高频斩波应用于电压测量信号,然后采样并将其转换为具有两个同时ADC的数字信号,最后通过软件解调斩波信号。 该技术不仅可以降低直流误差和漂移,还能消除由ADC非线性引起的失真不对称性。 得到的直流精度和分辨率可以明显小于1 LSB。

    Zero-offset voltage feedback for AC power supplies

    公开(公告)号:US09871442B2

    公开(公告)日:2018-01-16

    申请号:US14999526

    申请日:2016-05-19

    IPC分类号: H03M1/12 H02M3/157 H02M7/538

    摘要: A high voltage AC measurement method and circuit is disclosed to measure with zero offset and mirrored distortion based on hybrid chopping and fully differential signal path. There is a scheme with hybrid chopping and dual mixed signal paths. It applies high frequency chopping to the voltage measurement signal before the low-voltage signal conditioning, then samples and converts it to digital with two simultaneous ADCs, and finally demodulate the chopped signal by software. This technique not only reduces DC errors and drift but also cancels the distortion asymmetry caused by ADC non-linearity. The resultant DC accuracy and resolution can be significantly smaller than 1 LSB.

    Advanced PFC voltage controller
    7.
    发明申请
    Advanced PFC voltage controller 有权
    先进的PFC电压控制器

    公开(公告)号:US20160352216A1

    公开(公告)日:2016-12-01

    申请号:US14999532

    申请日:2016-05-19

    IPC分类号: H02M1/42 H02M7/44 H02M3/04

    摘要: A power factor correction voltage controller is disclosed. In one embodiment, the controller has a linear PI compensator, a moving average filter, a non-linear error circuit, a hysteretic peak control, and an output power feedforward. The power factor correction voltage controller provides regulation of maximum and minimum voltage values but without allowing large periodic fluctuations in the input power/current.

    摘要翻译: 公开了功率因数校正电压控制器。 在一个实施例中,控制器具有线性PI补偿器,移动平均滤波器,非线性误差电路,迟滞峰值控制和输出功率前馈。 功率因数校正电压控制器提供最大和最小电压值的调节,但不允许输入功率/电流的大周期性波动。

    Inrush current limiting method based on buck+boost topology
    10.
    发明申请
    Inrush current limiting method based on buck+boost topology 有权
    基于降压+升压拓扑的浪涌电流限制方法

    公开(公告)号:US20160344292A1

    公开(公告)日:2016-11-24

    申请号:US14999524

    申请日:2016-05-19

    IPC分类号: H02M3/158 H02M1/08 H02M1/32

    摘要: A cascaded buck+boost inrush limiter is claimed where the buck converter is only allowed to switch for very short times and stays turned on, or off, during steady state operation. The inrush limiter has a control system having a digital controller and an analog comparator for controlling the buck and boost converters. The system utilizes a single loop current feedback.

    摘要翻译: 要求降压+升压浪涌限制器,其中降压转换器只允许在稳态运行期间切换非常短的时间并保持打开或关闭。 浪涌限制器具有控制系统,其具有用于控制降压和升压转换器的数字控制器和模拟比较器。 该系统采用单回路电流反馈。