公开(公告)号：US20140307494A1

公开(公告)日：2014-10-16

申请号：US14222898

申请日：2014-03-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Xinhui WU ,  Jiao LIU ,  Dan HOU ,  Xueqin WU ,  Zhuohui TAN

IPC: H02M7/537

CPC classification number: H02M7/537 ,  H02J3/383 ,  H02J3/48 ,  H02J3/50 ,  H02M7/48 ,  Y02E10/563

Abstract: A power conversion system is disclosed including a DC bus for receiving DC power, a power converter for converting the DC power to AC power, and a controller. The controller includes an active power regulator for generating a phase angle command signal, a reactive power regulator for generating a voltage magnitude command, and an active power (P) and reactive power (Q) decoupling unit for decoupling interaction between the active and reactive power regulators. The PQ decoupling unit includes an active power compensation element and a reactive power compensation element. The active power compensation element is used for generating a phase angle compensation signal based on a reactive power error signal, to compensate the phase angle command signal. The reactive power compensation element is used for generating a voltage magnitude compensation signal based on an active power error signal, to compensate the voltage magnitude command signal.

Abstract translation: 公开了一种电力转换系统，包括用于接收DC电力的DC总线，用于将DC电力转换为AC电力的功率转换器以及控制器。 该控制器包括用于产生相位角命令信号的有功功率调节器，用于产生电压幅度指令的无功功率调节器以及用于去耦有功和无功功率之间的相互作用的有功功率（P）和无功功率（Q）去耦单元 监管者。 PQ解耦单元包括有功功率补偿元件和无功功率补偿元件。 有源功率补偿元件用于基于无功功率误差信号产生相位角补偿信号，以补偿相位角指令信号。 无功功率补偿元件用于基于有功功率误差信号产生电压幅度补偿信号，以补偿电压幅度指令信号。

公开(公告)号：US20130099788A1

公开(公告)日：2013-04-25

申请号：US13659337

申请日：2012-10-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Fei XU ,  Tao MA ,  Xi LU ,  Xinhui WU ,  Yimeng SHI ,  Pengcheng ZHU ,  Garron Koch MORRIS ,  Juan Antonio SABATE ,  Jeffrey Neal SLOTNICK

IPC: G01R1/30 ,  H02M7/44 ,  G01R33/341

CPC classification number: G01R33/3852 ,  H02M3/3376 ,  Y02B70/1433

Abstract: A gradient amplifier for driving a gradient coil is disclosed. The gradient amplifier includes a direct current (DC) bus for receiving DC voltage generated from a series resonant converter, an inverter coupled to the DC bus configured to receive the DC voltage at the DC bus and convert the DC voltage to generate an output voltage to be applied to the gradient coil, and an inverter controller coupled to the inverter. The inverter controller is configured to generate control signals to control operation of the inverter based at least on a DC voltage feedback signal measured at the DC bus, an output voltage feedback signal measured at the output of the inverter, and a reference output voltage signal indicative of a desired voltage to be achieved at the output of the inverter.

Abstract translation: 公开了一种用于驱动梯度线圈的梯度放大器。 梯度放大器包括用于接收从串联谐振转换器产生的直流电压的直流（DC）总线，耦合到DC总线的反相器，其被配置为在DC总线处接收DC电压并转换DC电压以产生输出电压 施加到梯度线圈，以及连接到逆变器的逆变器控制器。 逆变器控制器被配置为产生控制信号，以至少基于在DC总线处测量的DC电压反馈信号，在逆变器的输出处测量的输出电压反馈信号和指示的参考输出电压信号来控制逆变器的操作 具有在逆变器的输出端要实现的期望电压。