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公开(公告)号：US20110211379A1
公开(公告)日：2011-09-01
申请号：US12714860
申请日：2010-03-01
申请人： Patrick L. Chapman , Trishan Esram
发明人： Patrick L. Chapman , Trishan Esram
IPC分类号： H02M7/53
CPC分类号： H02M7/53873
摘要： A power converter includes a reverse-recovery avoidance scheme. The power converter may include deliver current from a direct current (DC) power source to an alternating current (AC) load. A first switch and second switch of the power converter may be operated to supply the AC load with positive current respective to the AC load from the DC power source. A third and fourth switch of the power converter may be operated to supply the AC load with negative current respective to the AC load from the DC power source. A first diode may be electrically coupled in series with the second switch and second diode may be electrically coupled in parallel with the first diode and the second switch. The second diode may conduct the positive current when the first switch is off and the second switch is on. A third diode may be electrically coupled in series with the fourth switch and a fourth diode may be electrically coupled in parallel with the third diode and the fourth switch. The fourth diode may conduct the negative current when the third switch is off and the fourth switch is on.
摘要翻译： 功率转换器包括反向恢复避免方案。 功率转换器可以包括从直流（DC）电源到交流（AC）负载的输送电流。 功率转换器的第一开关和第二开关可以被操作以向AC负载提供来自DC电源的AC负载的正电流。 可以操作功率转换器的第三和第四开关，以向来自直流电源的AC负载分别提供具有负电流的AC负载。 第一二极管可以与第二开关串联电耦合，并且第二二极管可以与第一二极管和第二开关并联电耦合。 当第一开关断开并且第二开关导通时，第二二极管可以传导正电流。 第三二极管可以与第四开关串联电耦合，并且第四二极管可以与第三二极管和第四开关并联电耦合。 当第三开关断开且第四开关接通时，第四二极管可以导通负电流。
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公开(公告)号：US20110211376A1
公开(公告)日：2011-09-01
申请号：US13036191
申请日：2011-02-28
申请人： Tatsuya HOSOTANI
发明人： Tatsuya HOSOTANI
IPC分类号： H02M7/53
CPC分类号： H02M3/33523 , H02M1/32 , H02M2001/0032 , Y02B70/16
摘要： A switching control IC outputs a rectangular wave signal from an output terminal thereof to a driving circuit. A feedback circuit compares a value of a divided voltage of a voltage across output terminals of a switching power supply device with a reference voltage, generates a feedback signal, and inputs the feedback signal into a feedback terminal of the switching control IC. A capacitor and a Zener diode are connected between the feedback terminal and a ground terminal. The Zener diode is selectively connected, and a voltage at the feedback terminal is changed in accordance with the presence of the Zener diode. A voltage at the feedback terminal is detected, and one of a latch method and a hiccup method is selected as a method for an overcurrent protection operation in accordance with the detected voltage.
摘要翻译： 开关控制IC从其输出端子向驱动电路输出矩形波信号。 反馈电路将开关电源装置的输出端子间的电压的分压值与参考电压进行比较，生成反馈信号，并将反馈信号输入到开关控制IC的反馈端子。 电容器和齐纳二极管连接在反馈端子和接地端子之间。 选择性地连接齐纳二极管，并且根据齐纳二极管的存在来改变反馈端的电压。 检测反馈端子的电压，根据检测到的电压，选择锁存方法和打嗝方法之一作为过电流保护动作的方法。
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43.发明授权Low cost electronic ultracapacitor interface technique to provide load leveling of a battery for pulsed load or motor traction drive applications 失效低成本电子超级电容器接口技术，用于为脉冲负载或电机牵引驱动应用提供负载均衡电池
公开(公告)号：US5723956A
公开(公告)日：1998-03-03
申请号：US654476
申请日：1996-05-28
CPC分类号： B60L11/005 , H02J7/34 , H02M1/14 , B60L2210/20 , Y02T10/7022 , Y02T10/725 , Y10T307/505 , Y10T307/658
摘要： A battery load leveling arrangement for an electrically powered system in which battery loading is subject to intermittent high current loading utilizes a passive energy storage device and a diode connected in series with the storage device to conduct current from the storage device to the load when current demand forces a drop in battery voltage. A current limiting circuit is connected in parallel with the diode for recharging the passive energy storage device. The current limiting circuit functions to limit the average magnitude of recharge current supplied to the storage device. Various forms of current limiting circuits are disclosed, including a PTC resistor coupled in parallel with a fixed resistor. The current limit circuit may also include an SCR for switching regenerative braking current to the device when the system is connected to power an electric motor.
摘要翻译： 用于电力系统的电池负载调平装置，其中电池负载经受间歇性大电流负载，利用与存储装置串联的无源储能装置和二极管，以在当前需求时将蓄电装置传导到负载 迫使电池电压下降。 限流电路与二极管并联连接，以对被动能量存储装置进行再充电。 电流限制电路用于限制提供给存储设备的再充电电流的平均幅度。 公开了各种形式的限流电路，包括与固定电阻器并联耦合的PTC电阻器。 电流限制电路还可以包括用于当系统连接到电动马达供电时将再生制动电流切换到装置的SCR。
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公开(公告)号：US5408404A
公开(公告)日：1995-04-18
申请号：US36792
申请日：1993-03-25
申请人： Daniel M. Mitchell
发明人： Daniel M. Mitchell
CPC分类号： H02M7/49 , H02M7/4807 , H02M7/493
摘要： An apparatus and method for accomplishing DC-to-AC power conversion that combine the AC outputs of n interleaved, time division multiplexed inverters and steer the secondary pulses positively or negatively, as commanded by the time varying reference signal, such that the effective switching, or sampled-data, frequency of any of the inverter or pulse-steering transistors. The n interleaved inverter system can, in turn, be paralleled such that, relative to a single inverter supplying all the power, the losses for any inverter transistor are 1/np, n due to time multiplexing and p due to paralleling.
摘要翻译： 一种用于实现DC-AC电力转换的装置和方法，其组合n个交错的时分多路复用的逆变器的AC输出，并且按照时变参考信号的指令正向或负向地转向辅助脉冲，使得有效切换， 或采样数据，任何逆变器或脉冲转向晶体管的频率。 n交错逆变器系统又可以并联，使得相对于提供所有功率的单个逆变器，由于时间复用而导致的任何逆变器晶体管的损耗为1 / np，由于并联而导致的p。
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公开(公告)号：US4048552A
公开(公告)日：1977-09-13
申请号：US657353
申请日：1976-02-12
申请人： Dale Eugene Stone
发明人： Dale Eugene Stone
CPC分类号： H04M19/008
摘要： An inverter for direct current power generation is shown in which both voltage regulation and logical control of the output are achieved by digitally controlling the application of clock signals to the inverter circuit. A standard clock source is used to drive the inverter and digital circuitry, timed from the same clock source, is used to control the gating of clock pulses to the inverter. Entire clock pulses including both positive going and negative going transitions are blocked so as to preserve the balanced excitation of the inverter transformer. Logical control signals can also be used to disable the application of clock pulses.
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公开(公告)号：US3976932A
公开(公告)日：1976-08-24
申请号：US568237
申请日：1975-04-15
申请人： James R. Collins
发明人： James R. Collins
IPC分类号： H02M7/537 , H02M7/5387 , H02M7/53
CPC分类号： H02M7/537 , H02M7/53871
摘要： A bridge type switching transistor inverter circuit for driving high power AC loads such as arc discharge lamps from a DC electrical energy source. Four switching transistors are arranged in bridge configuration that the load may be connected alternately in the inverter circuit between diagonal pairs of switching transistors. Each switching transistor is included in a switching amplifier whose response time is short as compared with the response characteristic of the load and the AC cycle period. A single driver circuit is coupled to the respective switching amplifiers by photocouple isolation means through an electro-optically coupled light emitter-sensor pair. A clock pulse generator provides the necessary signal to the driver circuit which includes a phase splitter driver. A two-stage amplifier receives the signal from the sensor transistor of the photocouple and amplifies it to drive the switching transistor which is, in the preferred embodiment, a power darlington device of the monolithic type.
摘要翻译： 一种用于从DC电能源驱动诸如电弧放电灯的大功率AC负载的桥式开关晶体管逆变器电路。 四个开关晶体管以桥式配置布置，负载可以交替地连接在对角线对开关晶体管之间的逆变器电路中。 每个开关晶体管包括在与负载和AC循环周期的响应特性相比响应时间短的开关放大器中。 单个驱动器电路通过光电耦合光发射器 - 传感器对通过光耦隔离装置耦合到相应的开关放大器。 时钟脉冲发生器向包括相分离器驱动器的驱动器电路提供必要的信号。 两级放大器接收来自光电耦合器的传感器晶体管的信号，并将其放大以驱动开关晶体管，在优选实施例中，开关晶体管是整体型的功率达赖顿装置。
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公开(公告)号：US3478256A
公开(公告)日：1969-11-11
申请号：US3478256D
申请日：1967-10-18
发明人： TOMOTA MIYAJI
CPC分类号： H02M7/53
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公开(公告)号：US11984821B2
公开(公告)日：2024-05-14
申请号：US17761444
申请日：2020-07-31
申请人： Hitachi Astemo, Ltd.
CPC分类号： H02M7/5395 , B60L15/08 , H02M1/12 , H02P27/08 , H02P29/40 , B60L2210/40
摘要： An inverter control device 200 includes a current control unit 210 that outputs a voltage commands (Vd*, Vq*), a modulation wave control unit 220 that generates a modulation wave based on the voltage commands (Vd*, Vq*), a pulse generation unit 230 that generates a PWM pulse for controlling an inverter 100 using a modulation wave and a carrier wave of a predetermined frequency, and a pulse shift unit 250 that corrects the phase of the PWM pulse such that the PWM pulse is output in a phase corresponding to a harmonic of a predetermined order of the modulation wave in the near-zero-cross region including the zero-cross point at which the modulation wave changes across 0.
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公开(公告)号：US11901829B2
公开(公告)日：2024-02-13
申请号：US17903501
申请日：2022-09-06
发明人： Sadanori Suzuki
CPC分类号： H02M3/33592 , H02M1/083 , H02M1/42 , H02M1/0058
摘要： A power converter includes an alternating-current-side circuit, a direct-current-side inductor, an alternating-current-side inductor, a direct-current-side circuit, a controlling unit, a transformer, a direct-current-side capacitor, and an alternating-current-side capacitor. The alternating-current-side circuit includes an alternating-current-side buffer circuit and a bridge circuit, and is connected to an alternating-current-side winding of the transformer via the alternating-current-side capacitor. The direct-current-side circuit includes a direct-current-side buffer circuit and a rectification switching element, and is connected to a direct-current-side winding of the transformer via the direct-current-side capacitor. The controlling unit controls switching of the switching elements.
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