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Method for controlling electric power of plural loads

阅读:352发布:2021-11-07

专利汇可以提供Method for controlling electric power of plural loads专利检索,专利查询,专利分析的服务。并且PURPOSE:To decrease the containing rate of higher harmonic components while improving a power factor by approxmating a current conduction waveform to a sine wave without any break on the whole. CONSTITUTION:An optimum phase angle setter 2 determines on-off phases of loads L1- on the basis of setting data from control level setters 31- corresponding to the loads. When four loads L1-L4 are set to 96.7, 78.1, 44.2, and 9.4% control levels respectively, the load is turned on at 40-180 deg. as shown by (a) and the load L2 is turned on at 0-40 deg. and 85.5-180 deg. as shown by (b); and the load L3 is turned on at 66.5-85.5 deg. as shown by (c) and the load L4 is turned on at 65.5-66.5 deg. as shown by (d) to eliminate a break. Further, the entire conduction waveform is approximated to a sine waveform as shown by (e) to obtain a high power factor, i.e. 0.97 and to reduce the containing rate of higher harmonics to 70.4.,下面是Method for controlling electric power of plural loads专利的具体信息内容。

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