Transforming diesel generators into hybrid photovoltaic energy systems in off grid systems

In the markets, when there is no photovoltaic power, almost all rely on diesel engines for power generation, with several diesel engines rotating to generate electricity. The renovation of a large diesel engine, such as the use of three 600kW diesel engines on a certain island by a certain doctor, with alternating power generation. The customer saw other islands undergoing photovoltaic renovation, which can save costs. The customer also wants to carry out the renovation. Based on the daily electricity consumption of the customer, we have designed a 400kW photovoltaic and 200kW/400kWH energy storage device for 2-hour backup at night. During the day, most of the island's electricity consumption is supported by photovoltaics, which are used immediately. The unused electricity is stored in the energy storage system. When the light is weak, the energy storage is prioritized for release to the load for use. At night, when the energy storage cannot meet the electricity demand, the oil engine starts. Due to the high voltage and current during the oil engine start, the energy storage PCS needs to quickly respond to the sudden changes in the power grid during the oil engine start, quickly correct the quality of the power grid, and ensure that the load is not affected. The entire system is a typical hybrid system, where photovoltaic power generation saves costs during the day and relies on energy storage and oil engine power generation to ensure power supply at night.
The schematic diagram:

The Sino Soar company developed PCS operates in parallel off grid mode and has strong practical experience in matching oil engine controllers to respond to sudden voltage increases during oil engine startup. It can quickly respond to sudden stable voltage and current increases and has rich experience in 100kW~1.5MW microgrid systems.

About SinoSoar

Product characteristics of Sino Soar's bidirectional energy storage converter

✔ Intelligent and efficient

Advanced three-level circuit topology with a maximum conversion efficiency of 98%

Wide DC voltage range, 600-950V

Advanced control algorithms with multiple operation modes including constant current, constant voltage, and constant power available

Equipped with off grid output function

Supports long-term overload operation at 110% rated power, and overload at 150% rated power for 10ms

Stable operation of intelligent air cooling and liquid cooling

✔ Economically friendly

Ultra high power density, smaller volume with equal power

Integrated design for easy transportation and integration

Support multi machine AC/DC parallel connection and flexible expansion

Independent modular architecture, convenient maintenance

✔ Safe and reliable

Complete battery protection and maintenance strategies to improve battery life

Protection against overcurrent, overheating, overload, overvoltage, short circuit, lightning protection and grounding

Equipped with zero voltage and high voltage traversal functions, with strong adaptability to the power grid

High performance DSP, optimized control circuit design, more stable system

Adapt to harsh environments of low temperature, high humidity, and high altitude

✔ Smart Internet

Supports RS485, Ethermet, and CAN communication methods, and can receive BMS commands in real-time

Support MODBUS-RTU/MODBUS-TCP/CAN2.0B/

About us

Sino Soar was established in 2015 and is located in Shenzhen, the electronic city of China. The company is committed to providing users with system solutions for power monitoring, power quality management, electrical safety, etc. It is a national high-tech enterprise specializing in the research and development, manufacturing, sales, and service of power electronic devices.

The company's main products include PCS energy storage converters, optical storage integrated machines, and energy storage system