In response to the intensifying energy crisis in today’s world, MM7 actively promotes the concept of new energy utilization and sustainable development. The PV series of solar pump inverters came into being and has enjoyed a good reputation in the domestic and overseas markets since its launch. The PV series solar pump inverter converts the direct current from the solar panel into alternating current, driving various water pumps. MM7 inverter offers advanced solar water pump solutions such as solar water pumping systems tailored for irrigation and other water supply needs, making major contributions to farm irrigation, drinking water, and desert management. MM7 solar irrigation pump system includes technical support, production delivery, and a reasonable solar power inverter price.

The original fountain control system utilizes the musics main phonemes (frequency, amplitude, timbre and tempo) to control the combination of pattern changes in water spray, the height of the water column, changes in distance, and light color combinations. The principle is to convert sound signals into electrical signals. After amplification and other processes to promote the relay or electronic switch, and then to control the opening and closing of the solenoid valve located on the waterway, so as to achieve to control the on and off of the nozzle water circuit .

Burning incense has a long history in our country and even in the world. In all parts of our country, both cities and villages burn incense. Such as Spring Festival, Qingming Festival, first, fifteen, seven and a half moon, Buddha, God, temple, funeral have incense habits, incense industry is a one-time consumer goods of the country and the world market never saturated, burning incense in China has a huge market, but due to the traditional incense production process is complicated, slow, dust and the high cost of operating in the production and consumption of each link restricts the production and development of the product. The manual production operators have look forward to the advent of incense machine. Undoubtedly, the utility model "incense making machine" goes to the market with many advantages. At present, the types of incense making machines in the market are auxiliary type, labor-saving type, one-time molding and fully automatic type.

Industrial washing machine from the ordinary to the development of automatic type, the automatic industrial washing machine mostly adopts multiple double speed AC motor, because of the characteristics of simple structure, stable, cheap, widely used. But its shortcoming is the speed adjustment performance is bad, the speed catastrophe is big, the vibration is big. With the development of power semiconductor technology, AC inverter has been widely used in industrial washing machines in recent years.

Escalators and moving walkways in hotels, shopping malls, subway, train stations, office buildings, application hall guildhalls, airports and other places application more, in the for convenience of customers and improve the quality of service has played a very important role. But because of its’ special occasions application cases, often part of escalator in idle rotation some escalators are often in idle state, it will waste a lot of energy, but also make the escalator parts (such as motor, reducer, handrail etc.) cause wear abrasion and fatigue damage is not necessary. Therefore, this paper uses inverter electric ray to reform MM7 pay attention on not enough application of frequency inverters and needs of reforms.MM7 is a reliable elevator inverter and elevator drive solution provider. Our elevator control system makes the starting process smoother and saves the running cost.