Wccsolar Blog

Parallel Connection of Deye and Huawei Inverters via Deye Inverter GEN Interface In photovoltaic or energy storage systems, connecting inverters from different brands in parallel is a way to increase system capacity or achieve complementary functionality. In the case of Deye and Huawei inverters, it is possible to connect them in parallel using the GEN interface of the Deye inverter, allowing communication and coordination between both devices. The specific principles and steps are explained below: ✅ Working Principle Function of GEN Interface: In Deye inverters, the GEN interface is used to synchronize communication with other power sources or inverters. Ensures that devices connected in parallel maintain the same phase, frequency and voltage, avoiding interference. Huawei Inverter Connection: The Huawei inverter connects through its communication interface to the GEN interface of the Deye inverter. This allows the Deye inverter to read information from the Huawei inverter, such as output power, voltage and current, thus coordinating power supply for the connected loads. Coordination after Parallel Connection: The Deye inverter generally acts as the “master” inverter, controlling the operating logic of the system. The Huawei inverter acts as the “secondary inverter” (Slave), adjusting its output power according to the instructions of the Deye inverter. This mode of operation avoids conflicts between inverters and improves system efficiency and stability. Connection Steps Power Cut: Make sure all equipment is turned off before making connections. Communication Cable Connection: Use a suitable communication cable to connect the communication interface of the Huawei inverter to the GEN interface of the Deye inverter. Normally an RS485 cable is used, paying attention to the correct matching of terminals A and B. Communication Parameters Configuration: Configure the communication protocol and baud rate on the Deye inverter control interface to match those of the Huawei inverter. Make sure the communication addresses of both inverters are different to avoid conflicts. Electrical Parameters Check: Make sure both inverters have the same output voltage and frequency, usually 220V/50Hz or 380V/50Hz, depending on the system configuration. System Startup: Power on the Deye inverter first, then the Huawei inverter, ensuring that the master-slave relationship is established correctly. System Test: Check the stability of the parallel connected system and test the operation under different load conditions to confirm that both inverters work in coordination. Important Considerations Compatibility: Although this form of connection is usually possible, it is recommended to check the compatibility of specific models, as some recent models may have differences in communication protocols.