SOROTEC UPS

Usually the harmonic current is proportional to the working current of the harmonic source equipment. Dynamic  harmonic filter , which measures load harmonic current by controller, controls bi-directional thyristor zero-crossing trigger, realizes dynamic harmonic filtering and reactive power compensation for non-linear load, and has no impact, inrush and transition during switching process. 1.Automatically tracking the harmonic of compensating change has high controllability and fast responsiveness. Compensation performance is not affected by the frequency fluctuation of power grid, and filtering characteristics are not affected by system impedance, which can eliminate the risk of resonance with system impedance. 2.It can not only control harmonics, but also compensate reactive power, restrain flicker and improve power factor. It can independently compensate for a single harmonic source or centrally compensate for multiple harmonic sources. The specified sub-harmonics are el...

The common structure of on grid  solar power generation system  includes centralized, series, multi-series and AC modules. In centralized, series and multi-series systems, there are series and parallel solar cell modules, so the maximum power point tracking of the system is aimed at the whole series-parallel solar cell array, which can not take into account each solar cell array in the system. The utilization of single solar cell array is low, the system has poor ability to resist local shadows, and the system expansion flexibility is not enough. The  solar on grid micro-inverters  are connected with a single solar cell module, which can directly convert the DC output of the solar cell module into AC and transmit it to the grid. They have the following advantages: 1.It ensures that each solar cell module runs at the maximum power point, and has a strong ability to resist local shadows. 2.By integrating micro-inverters with solar cell modules, can realize modular...

A device used to filter one or more harmonics in power system; most of its structures are composed of inductors, capacitors and resistors, i.e. passive harmonic filters, which also serve as reactive power compensation; the emerging filtering technology also includes  active harmonic filters . It is used to filter harmonics in power system with voltage less than 1000 volts, such as harmonics generated by six-pulse rectifier, also known as harmonic generator. Based on the principle of electromagnetic induction and reactor, a filter compensation system is composed of high performance filter capacitors connected in series with high linearity filter devices to compensate reactive power while absorbing the main harmonic components of the system. By integrating dynamic reactive power compensation and filtering functions, it can quickly follow the load changes, and has three main functions: restraining current fluctuation, absorbing harmonics of power grid and compensating reactive po...

Building Integrated PV(BIPV) is a new concept of solar power generation. Simply speaking, solar photovoltaic power generation square array is installed on the outer surface of the building envelope to provide power. According to the different ways of combining photovoltaic array with buildings, building Integrated PV can be divided into two categories: one is the combination of photovoltaic array and buildings. The other is the integration of photovoltaic array and building, such as photoelectric tile roof, photoelectric curtain wall and photoelectric lighting roof. In these two ways, the combination of photovoltaic arrays and buildings is a common form, especially with the roof of buildings. Because the combination of photovoltaic array and building does not occupy additional ground space, it is the best installation method of photovoltaic power generation system widely used in cities, so it attracts much attention. The integration of photovoltaic arrays and buildings is an advanced ...