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    • 45. 发明授权
    • Generator having automatic parallel operation function
    • 发电机具有自动并联运行功能
    • US5426578A
    • 1995-06-20
    • US014634
    • 1993-02-08
    • Masashi NakamuraMotohiro Shimizu
    • Masashi NakamuraMotohiro Shimizu
    • H02J3/38H02J3/40H02J3/42H02M7/493H02M5/45H02J1/00
    • H02M7/493H02J3/38Y10T307/735
    • An invertor-controlled generator unit is connectible with at least one other generator for parallel operation. The invertor-controlled generator has an invertor circuit which performs switching operation to convert a direct current power into an alternating current power based on a reference sinusoidal signal. Voltage and current of the alternating current power from the invertor circuit are detected. A difference in phase between the detected voltage and current is detected, and a signal indicative of the phase difference is formed. A reference pulse signal is formed in response to the signal indicative of the phase difference for varying the frequency of the signal indicative of the target output waveform in a manner such that the phase difference is decreased. Upon starting of the generator, when the above-mentioned voltage is detected, the signal indicative of the target output waveform is generated at timing dependent on the waveform of the detected voltage, whereas when the voltage is not detected, the signal indicative of the target output waveform is generated at timing independent of the voltage.
    • 逆变器控制的发电机单元可与至少一个其他发电机连接,用于并联运行。 逆变器控制的发生器具有逆变器电路,其执行开关操作以基于参考正弦信号将直流电力转换成交流电力。 检测来自逆变器电路的交流电力的电压和电流。 检测出检测到的电压和电流之间的相位差,形成表示相位差的信号。 响应于指示相位差的信号,以使得相位差减小的方式改变指示目标输出波形的信号的频率的信号形成参考脉冲信号。 在启动发电机时,当检测到上述电压时,指示目标输出波形的信号是根据检测到的电压的波形的定时产生的,而当没有检测到电压时,指示目标的信号 在与电压无关的定时产生输出波形。
    • 47. 发明授权
    • Curing agent-free water based coating composition
    • 无固化剂水性涂料组合物
    • US5344857A
    • 1994-09-06
    • US911933
    • 1992-07-10
    • Mituo UmezawaMasashi NakamuraHirosi Kubota
    • Mituo UmezawaMasashi NakamuraHirosi Kubota
    • C09D5/00C09D161/20C09D163/00C09D163/02C09D167/00C09D167/02C08K3/20
    • C09D167/00
    • A water based coating composition which has excellent shelf stability and can be cured by ordinary baking in the absence of a sulfonic acid-containing acid catalyst and which gives a coating having excellent adhesion and excellent water resistance. The water based coating composition can be obtained by dissolving or dispersing50 to 80% by weight, as a solid content, of a water-soluble polyester resin prepared by polycondensing a carboxylic acid component containing 10 to 60 mol % of a polycarboxylic acid having 3 to 4 carboxyl groups per molecule and 40 to 90 mol % of a dicarboxylic acid and 1.1 to 2.0 mol, per mole of the carboxylic acid component, of a glycol component, to obtain a polyester resin having a free carboxyl group, and dissolving the polyester resin in water in the presence of a base,5 to 20% by weight, as a solid content, of a water based bisphenol type epoxy resin, and15 to 45% by weight, as a solid content of an alkyl-etherified amino resin, in an aqueous medium.
    • 一种水性涂料组合物,其具有优异的储存稳定性,并且在不存在含磺酸的酸催化剂的情况下可通过普通烘烤固化,并且得到具有优异粘合性和优异耐水性的涂料。 水性涂​​料组合物可以通过将50〜80重量%的固体成分溶解或分散在水溶性聚酯树脂中而获得,所述水溶性聚酯树脂通过将含有10〜60摩尔%的具有3个碳原子的多元羧酸的羧酸组分 相对于每摩尔羧酸成分为二醇成分,每分子具有4个羧基和40〜90摩尔%的二羧酸和1.1〜2.0摩尔,得到具有游离羧基的聚酯树脂,并将该聚酯 在碱存在下,在水的存在下,以水基双酚型环氧树脂5至20重量%,固体含量为15至45重量%,作为固体含量的烷基醚化氨基树脂 ,在水性介质中。