公开(公告)号：US20120103977A1

公开(公告)日：2012-05-03

申请号：US13381090

申请日：2010-05-19

申请人： Shouqing Qiu ,  Samson Xu

发明人： Shouqing Qiu ,  Samson Xu

IPC分类号： H05B6/68 ,  H05B1/02

CPC分类号： H05B6/062

摘要： A digital control type power converter for cooking utensils includes a rectifier; a power inverting circuit composed of an IGBT and an LC shunt-resonant circuit; and a SoC chip which internally integrates a MPU, a Programmable Pulse Generator (PPG), an ADC, a COM, wherein the PPG, the ADC and the COM are connected to the MPU. One output of the MPU is connected to the PPG through a first AND gate, and a pulse signal outputted by the PPG is transmitted to the IGBT through a second AND gate. The MPU calculates the present power value according to measured current and voltage signals, and compares the present power value with the required power of the host computer to change the set pulse width value of the PPG. When a magnetic energy conversion detecting circuit outputs an enabling signal, the PPG outputs the pulse signal with the setting pulse width to drive the IGBT and realize the regulation of power. Since this converter can receive man-machine operating instructions and dynamically change its output power, the inductive structure in the resonant circuit can be appropriately changed to be applied to high-frequency heating equipment, such as a microwave oven, an electromagnetic oven, and the alike.

摘要翻译： 一种用于炊具的数字控制型功率转换器包括整流器; 由IGBT和LC并联谐振电路组成的电源反相电路; 以及内部集成了MPU，可编程脉冲发生器（PPG），ADC，COM的SoC芯片，其中PPG，ADC和COM连接到MPU。 MPU的一个输出通过第一与门连接到PPG，并且由PPG输出的脉冲信号通过第二与门传输到IGBT。 MPU根据测量的电流和电压信号计算当前功率值，并将当前功率值与主机的所需功率进行比较，以改变PPG的设定脉冲宽度值。 当磁能转换检测电路输出使能信号时，PPG以设定脉冲宽度输出脉冲信号，驱动IGBT并实现功率调节。 由于该转换器可以接收人机操作指令并且动态地改变其输出功率，所以可以适当地改变谐振电路中的感应结构以适用于诸如微波炉，电磁炉的高频加热设备 一样。

公开(公告)号：US09012821B2

公开(公告)日：2015-04-21

申请号：US13381090

申请日：2010-05-19

申请人： Shouqing Qiu ,  Samson Xu

发明人： Shouqing Qiu ,  Samson Xu

IPC分类号： H05B6/62 ,  H05B6/06

CPC分类号： H05B6/062

摘要： A digital control type power converter for cooking utensils includes a rectifier; a power inverting circuit composed of an IGBT and an LC shunt-resonant circuit; and a SoC chip which internally integrates a MPU, a Programmable Pulse Generator (PPG), an ADC, a COM, wherein the PPG, the ADC and the COM are connected to the MPU. One output of the MPU is connected to the PPG through a first AND gate, and a pulse signal outputted by the PPG is transmitted to the IGBT through a second AND gate. The MPU calculates the present power value according to measured current and voltage signals, and compares the present power value with the required power of the host computer to change the set pulse width value of the PPG. When a magnetic energy conversion detecting circuit outputs an enabling signal, the PPG outputs the pulse signal with the setting pulse width to drive the IGBT and realize the regulation of power. Since this converter can receive man-machine operating instructions and dynamically change its output power, the inductive structure in the resonant circuit can be appropriately changed to be applied to high-frequency heating equipment, such as a microwave oven, an electromagnetic oven, and the alike.

摘要翻译： 一种用于炊具的数字控制型功率转换器包括整流器; 由IGBT和LC并联谐振电路组成的电源反相电路; 以及内部集成了MPU，可编程脉冲发生器（PPG），ADC，COM的SoC芯片，其中PPG，ADC和COM连接到MPU。 MPU的一个输出通过第一与门连接到PPG，并且由PPG输出的脉冲信号通过第二与门传输到IGBT。 MPU根据测量的电流和电压信号计算当前功率值，并将当前功率值与主机的所需功率进行比较，以改变PPG的设定脉冲宽度值。 当磁能转换检测电路输出使能信号时，PPG以设定脉冲宽度输出脉冲信号，驱动IGBT并实现功率调节。 由于该转换器可以接收人机操作指令并且动态地改变其输出功率，所以可以适当地改变谐振电路中的感应结构以适用于诸如微波炉，电磁炉的高频加热设备 一样。

公开(公告)号：US20110127256A1

公开(公告)日：2011-06-02

申请号：US12992955

申请日：2009-12-09

申请人： Shouqing Qiu ,  Xu Samson ,  Li Peng ,  Chen Jinfeng

发明人： Shouqing Qiu ,  Xu Samson ,  Li Peng ,  Chen Jinfeng

IPC分类号： H05B6/04

CPC分类号： H05B6/68 ,  H05B6/06

摘要： A method for automatic calibration of the power of electromagnetic oven includes the following steps: 1) selecting two current test values within a range of working current of the electromagnetic oven, making it operate in the case of the current test values and zero, detecting voltage values of current signals under the three operation states; calculating, by a CPU, a coefficient k and an intercept b according to a formula y(i)=k×i+b using the three sets of data, and storing them; 2) during operation, calculating, by the CPU, a current current signal i using a voltage value y(i) of the current current signal detected by the current detection and collection circuit and the coefficient k and intercept b, according to a formula i=1/k×y(i)−b/k, and in turn calculating a current power using the current current signal and a current voltage signal. A calibration program is built in the chip for setting a parameter and automatically colleting and calculating the calibration parameter; during operation, the current or power may be automatically calibrated, which provides an accurate basis for adjusting the power of electromagnetic oven. The mode in which a conventional potentiometer is adopted for calibration may be replaced by the present invention, which results in reduction of cost and improvement of the reliability.

摘要翻译： 一种自动校准电磁炉功率的方法，包括以下步骤：1）选择电磁炉工作电流范围内的两个当前测试值，使其工作在当前测试值和零点的情况下，检测电压 在三种操作状态下的电流信号值; 使用三组数据根据公式y（i）= k×i + b由CPU计算系数k和截距b，并存储它们; 2）在运行期间，由CPU根据公式i利用由电流检测和采集电路检测的当前电流信号的电压值y（i）和系数k和截距b来计算电流信号i = 1 / k×y（i）-b / k，然后使用电流电流信号和电流电压信号计算电流功率。 该芯片内置校准程序，用于设置参数并自动进行采集并计算校准参数; 在运行期间，电流或功率可以自动校准，这为调整电磁炉功率提供了准确的依据。 采用常规电位器进行校准的模式可以由本发明代替，这导致成本的降低和可靠性的提高。

公开(公告)号：US20110226758A1

公开(公告)日：2011-09-22

申请号：US12992944

申请日：2009-12-04

申请人： Shouqing Qiu ,  Samson Xu ,  Chunguang Liu ,  Peng Li ,  Jinfeng Chen

发明人： Shouqing Qiu ,  Samson Xu ,  Chunguang Liu ,  Peng Li ,  Jinfeng Chen

IPC分类号： H05B6/06

CPC分类号： H05B6/06

摘要： An electromagnetic oven circuit based on SoC chip includes a power inversion circuit and a CHK-S008 type SoC chip. A CPU, comparators, an operational amplifier, an A/D converter, and an IGBT drive control module are integrated into this chip. The circuit further includes a feedback excitation IGBT driver including the IGBT drive control module, the comparator, an external driver, and an external feedback circuit connected between the output of the IGBT drive control module and the in-phase input terminal of the comparator, the output of the comparator is connected to the feedback terminal of the IGBT drive control module, the external driver is connected between the output of the drive control module and the input of the power inversion circuit for driving the power inversion circuit to work. The external feedback circuit feeds back the pulse signal into the chip to modify the IGBT drive waveform and optimize the pulse signal waveform, which improves the work efficiency; at the same time, an excitation effect may be generated in the case of a weak synchronization signal by the external feedback circuit, preventing the synchronization signal from failing when the commercial power is low.

摘要翻译： 基于SoC芯片的电磁炉电路包括功率反转电路和CHK-S008型SoC芯片。 该芯片集成了CPU，比较器，运算放大器，A / D转换器和IGBT驱动器控制模块。 该电路还包括反馈激励IGBT驱动器，其包括IGBT驱动控制模块，比较器，外部驱动器和连接在IGBT驱动控制模块的输出与比较器的同相输入端之间的外部反馈电路， 比较器的输出端连接到IGBT驱动控制模块的反馈端，外部驱动器连接在驱动控制模块的输出端和电源反相电路的输入端之间，用于驱动电源反相电路工作。 外部反馈电路将脉冲信号反馈到芯片中，修改IGBT驱动波形，优化脉冲信号波形，提高工作效率; 同时，在外部反馈电路的弱同步信号的情况下，可能会产生激励效应，从而防止商业电力低时的同步信号失效。