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公开(公告)号：US5880574A
公开(公告)日：1999-03-09
申请号：US774783
申请日：1996-12-30
申请人： Kazuo Otsuka , Hisahiro Ito , Sadao Shinohara , Yasumichi Ohnuki , Fumio Anraku , Shinji Yoshikawa
发明人： Kazuo Otsuka , Hisahiro Ito , Sadao Shinohara , Yasumichi Ohnuki , Fumio Anraku , Shinji Yoshikawa
IPC分类号： H02H7/00 , B60L3/00 , B60L11/18 , B60L15/08 , B60L15/28 , H02H7/12 , H02M7/48 , H02P27/06 , H02P27/08 , H02P5/41
CPC分类号： B60L15/08 , B60L11/1803 , B60L3/003 , B60L2270/142 , B60L2270/145 , Y02T10/645 , Y02T10/7005 , Y02T10/7258
摘要： In an electric vehicle in which a motor is driven using the electric power of a battery, and a PWM controller controls an inverter mounted between the battery and the motor. The frequency of the PWM control means is usually set higher than an audio frequency, in order to decrease the switching noise of the inverter. Motor operational state detecting devices detect when the motor is at low speed and high-load operational state, and if there is a possibility that switching elements of the inverter may be over-heated, the frequency of the PWM controller is decreased by a frequency changing device, thereby preventing damage to the switching elements of the inverter due to the over-heating.
摘要翻译： 在使用电池的电力驱动电动机的电动车辆中，PWM控制器控制安装在电池和电动机之间的逆变器。 为了降低逆变器的开关噪声，PWM控制装置的频率通常设定为高于音频频率。 电机运行状态检测装置检测电机何时处于低速和高负载运行状态，如果逆变器的开关元件有可能过热，则PWM控制器的频率会因频率变化而降低 装置，从而防止由于过热导致的逆变器的开关元件的损坏。
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公开(公告)号：US20130088096A1
公开(公告)日：2013-04-11
申请号：US13640806
申请日：2011-04-07
申请人： Junichi Hashimoto , Sadao Shinohara
发明人： Junichi Hashimoto , Sadao Shinohara
IPC分类号： H02H3/087
CPC分类号： H02H3/087 , H02M1/08 , H02M1/32 , H03K17/0828 , H03K17/163 , H03K17/168 , Y10T307/865
摘要： A short-circuit protection method for a circuit having a plurality of power switching elements, includes, when a short-circuit of a first power switching element is detected by detection device that detects a short-circuit of the plurality of power switching elements, performing a cut-off process of cutting off a gate of a second power switching element through which a short-circuit current caused by the short-circuit of the first power switching element flows, and changing a resistance value of a gate resistor of the second power switching element while the cut-off process is performed.
摘要翻译： 具有多个功率开关元件的电路的短路保护方法包括：当检测到所述多个功率开关元件的短路的检测装置检测到第一功率开关元件的短路时，执行 切断由第一电力开关元件的短路引起的短路电流流过的第二电力开关元件的栅极的切断过程，以及改变第二电力的栅极电阻器的电阻值 开关元件，同时进行切断处理。
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公开(公告)号：US20130038140A1
公开(公告)日：2013-02-14
申请号：US13643853
申请日：2011-04-08
申请人： Shinsei Seki , Sadao Shinohara
发明人： Shinsei Seki , Sadao Shinohara
IPC分类号： H01H47/00
CPC分类号： H02M7/53873 , H02P27/08 , H03K17/08142 , H03K17/145 , H03K17/74 , H03K2017/0806 , H03K2217/0036 , Y02B70/1483 , Y10T307/747
摘要： Provided is a switching circuit including an arm having two switching elements connected. The switching elements are SiC semiconductors, and when a commutation current flows to the reverse conducting element, the switching element having the reverse conducting element connected in parallel thereto is turned on.
摘要翻译： 提供一种包括连接有两个开关元件的臂的开关电路。 开关元件是SiC半导体，并且当换向电流流向反向导通元件时，具有并联连接的反向导通元件的开关元件导通。
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公开(公告)号：US5132604A
公开(公告)日：1992-07-21
申请号：US498050
申请日：1990-03-22
申请人： Iwao Shimane , Yoshio Kojima , Toshio Yokoyama , Sadao Shinohara
发明人： Iwao Shimane , Yoshio Kojima , Toshio Yokoyama , Sadao Shinohara
IPC分类号： F02N11/04
CPC分类号： F02N11/04 , F02N15/046
摘要： An engine starter and electric generator system transmits rotative power to a crankshaft to start an engine and generates electric power based on rotative power from the crankshaft after the engine has started. The engine starter and electric generator system includes a starter/generator operable selectively as a starter motor to produce the rotative power and a generator for generating the electric power, and an electric power supply device for supplying electric power to the starter motor. A power transmitting mechanism operatively interconnects the crankshaft and the starter/generator, for bidirectionally transmitting the rotative power between the crankshaft and the starter/generator. A transmission mechanism is disposed in the power transmitting mechanism, for changing the speed of rotation transmitted between the crankshaft and the starter/generator. The system also has a control device for controlling operation of the starter/generator and establishing different speed-reduction ratios for the transmission mechanism when the starter/generator operates as the generator and when the starter/generator operates as the starter motor.
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公开(公告)号：US06643157B2
公开(公告)日：2003-11-04
申请号：US10115979
申请日：2002-04-05
IPC分类号： H02M75387
CPC分类号： H02M7/5387 , Y02B70/1441
摘要： A resonant inverter circuit is provided which can be made lighter in weight and smaller in capacity. With a main circuit in steady mode, IGBT of an auxiliary circuit are controlled and the energy of an electric current is stored in a resonant inductance. Next, snubber capacitors are charged and discharged by means of an electric current. At this time, the voltages across both terminals of IGBT corresponding with the snubber capacitors being charged becomes zero, and ZVS is achieved. Furthermore, when the snubber capacitors being discharged have been completely discharged, and free wheeling diodes and IGBT corresponding with these snubber capacitors conduct, both the voltages across both terminals of the IGBT and the electric current become zero and ZVS and ZCS are achieved.
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公开(公告)号：US06570780B2
公开(公告)日：2003-05-27
申请号：US10134535
申请日：2002-04-30
IPC分类号： H02M324
CPC分类号： B60L11/1803 , B60L15/025 , H02M7/53873 , H02M7/53875 , Y02T10/643 , Y02T10/7005
摘要： An inverter control apparatus is provided which controls a resonant soft switching inverter circuit according to the operational principle that the number of the resonant inductors be reduced. When the three phase control signal of the control CPU 5 changes from the (1, 0, 0) state to (0, 0, 1), the drive signal generating device 6 causes a current to flow to the inductor Lr by making the auxiliary switching elements conductive, and when the current I4 flowing to the inductor Lr is the same as the maximum among the currents I1, I2, and I3 flowing through the load, turns OFF the IGBT Q1 and IGBT Q6. Next, the voltage sensors Vs2 and Vs5, which are connected to the IGBTs Q2 and Q5 of the main switching circuit, detect whether or not the voltage across the collector terminal and emitter terminal has become “zero”, and when the outputs Z2 and Z5 of the zero voltage detecting device 8 output the respective logical values “1”, the device signal generating device 6 outputs the switching control signals S2 and S5 that force the IGBTs Q2 and Q5 to conduct, and transit to a stationary condition.
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公开(公告)号：US06646898B2
公开(公告)日：2003-11-11
申请号：US10166767
申请日：2002-06-12
IPC分类号： H02M5451
CPC分类号： B60L15/08 , H02M7/5387 , H02P27/06 , Y02T10/644 , Y02T10/645 , Y10T307/685
摘要： The invention provides a resonant inverter apparatus that allows making the number of sensors small and reducing the cost. In an inverter apparatus comprising an inverter circuit 2A, a resonant circuit 2B, and a control circuit 3, a three phase main circuit, capacitors C1 to C6, and load current sensors Is1 to Is3 are provided in the inverter circuit, a three phase auxiliary circuit and inductor Lr are provided in the resonant circuit, a resonant current arrival determining device 7 and a drive signal generating device 6 are provided in the control circuit, and a maximum value detecting device 12 that detects the absolute value of the maximum value of the load current, a counter setting value output device 13 that outputs the counter setting value that depends on the absolute value of the maximum value of the load current, and a count calculating device 14 that outputs the arrival determination signal after the passage of a time interval that depends on the counter setting value output by the counter setting value output device after the drive signal generating device outputs a predetermined switching timing signal are provided in the resonant current arrival determining device.
摘要翻译： 本发明提供一种谐振逆变器装置，其使得传感器的数量变小并降低成本。 在包括逆变器电路2A，谐振电路2B和控制电路3的逆变器装置中，三相主电路，电容器C1至C6和负载电流传感器Is1至Is3设置在逆变器电路中，三相辅助 电路和电感器Lr设置在谐振电路中，谐振电流到达判定装置7和驱动信号生成装置6设置在控制电路中，最大值检测装置12检测最大值的绝对值 负载电流的计数器设定值输出装置13，输出与负载电流的最大值的绝对值相对应的计数器设定值的计数器设定值输出装置13，以及在经过时间间隔后输出到达判定信号的计数运算装置14 这取决于在驱动信号产生装置输出预定切换时机之后由计数器设定值输出装置输出的计数器设定值 谐振电流到达判定装置中设置有信号。
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公开(公告)号：US5804973A
公开(公告)日：1998-09-08
申请号：US728196
申请日：1996-10-10
CPC分类号： B60L11/1807 , B60L11/1803 , B60L15/007 , G01R31/028 , B60L2210/20 , Y02T10/645 , Y02T10/7005 , Y02T10/725
摘要： Before a motor contactor is turned ON, a pre-charge contactor is turned ON to charge a smoothing capacitor of an inverter. During this time, an increased rate of voltage of the capacitor is detected by a voltage sensor. When the increased rate exceeds a predetermined value, it is determined that the capacitor has deteriorated. After turning-OFF the motor contactor, a discharge contactor is turned ON, and the capacitor of the inverter is discharged. During this time, a decreased rate of voltage of the capacitor is detected by the voltage sensor. When the decreased rate exceeds a predetermined value, it is determined that the capacitor has deteriorated. Thus, it is possible to determine the deterioration of the smoothing capacitor mounted in the inverter in an electric vehicle without removing of the capacitor from the inverter.
摘要翻译： 在电动机接触器接通之前，预充电接触器接通以对变频器的平滑电容器充电。 在此期间，通过电压传感器检测电容器的电压升高。 当增加的速率超过预定值时，确定电容器已经劣化。 电动机接触器关闭后，放电接触器接通，变频器的电容器放电。 在此期间，由电压传感器检测电容器的电压降低。 当降低速率超过预定值时，确定电容器已劣化。 因此，可以确定安装在电动车辆中的逆变器中的平滑电容器的劣化，而不从电抗器移除电容器。
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公开(公告)号：US5619107A
公开(公告)日：1997-04-08
申请号：US501962
申请日：1995-07-13
申请人： Sadao Shinohara , Masaharu Hosoda
发明人： Sadao Shinohara , Masaharu Hosoda
CPC分类号： B60L11/005 , B60L15/20 , B60L3/00 , Y02T10/645 , Y02T10/7022 , Y02T10/7275
摘要： A device for controlling an electric vehicle motor that optimally discharges a smoothing capacitor, connected to the input terminals of an inverter in accordance with the condition of an electric vehicle. The device includes a motor drive means, the smoothing capacitor connected in parallel with the motor drive means, switching means operating in connection with an operation switch operated by the vehicle operator, discharging means for discharging the smoothing capacitor, draw detecting means, and discharge restricting means. The system opens the switching means to shut off output from the battery and to discharge the smoothing capacitor when the switching means is open, but restricts discharging during a towing or drawing condition of the electric vehicle.
摘要翻译： 一种用于控制电动车辆电动机的装置，该电动车辆电动机根据电动车辆的状况，最佳地排放连接到逆变器的输入端子的平滑电容器。 该装置包括电动机驱动装置，与电动机驱动装置并联连接的平滑电容器，与由车辆操作者操作的操作开关连接的开关装置，用于对平滑电容器进行放电的放电装置，牵引检测装置和放电限制 手段。 该系统打开开关装置，以切断电池的输出，并且在切换装置打开时对平滑电容器进行放电，但限制电动车辆牵引或拉出状态期间的放电。
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