The global energy structure is accelerating its transformation towards low-carbonization, with the penetration rate of renewable energy continuously rising. However, the contradiction between the intermittency of wind and solar power generation and the stability of the power grid is becoming increasingly prominent. As the core "commander" of the energy storage system, the power conversion system (PCS) has become a key device to solve the problem of new energy consumption and improve the economic efficiency of industrial and commercial electricity consumption through its core functions such as bidirectional energy conversion and flexible frequency and voltage regulation.
As a core hub connecting renewable energy with the user side, the power conversion system (PCS) for energy storage is undergoing a dual transformation of technological iteration and market expansion. Qualtech, deeply rooted in the energy storage electronics industry, based on its in-depth understanding of industry pain points, has launched a 130KW series of energy storage PCS that integrates high efficiency, high reliability, and high intelligence. With a full-stack self-developed technology system, it breaks through the efficiency bottleneck and compatibility challenges of commercial and industrial energy storage systems, providing a solution that is both economically viable and forward-looking for the construction of new power systems.
Technical Core Analysis: The Three Major Core Competitiveness of Qualtech PCS
1.Efficiency Revolution: Three-Level Topology Redefines Industry Standards
The Qualtech QT-PCS-130 adopts a three-level topology architecture and combines an intelligent air-cooling system to achieve a system efficiency of over 98% and a 30% increase in power density. This design breaks through the limitations of traditional solutions, reducing the equipment volume by 20% and the weight by 15%, significantly lowering transportation and installation costs. Compared to the common heat dissipation problems of centralized PCS, its intelligent variable-speed fan can dynamically adjust the air volume according to the load, ensuring efficient heat dissipation while reducing energy consumption. This technical advantage is particularly prominent in large-scale industrial and commercial scenarios.
2. Flexible Configuration: Intelligent Hub for Multiple Scenarios
Supporting various connection methods such as three-phase four-wire system and multi-machine parallel, it can meet the customized demands of enterprises of different scales. Through multi-machine parallel technology, the system capacity can be flexibly expanded from 130kW to megawatt level, perfectly matching mainstream battery types such as ternary lithium and lithium iron phosphate, as well as a wide DC voltage range of 650-950V. Measured data shows that a single 130kW device can reduce power loss by over 12,000 kWh annually, directly saving users nearly 10,000 yuan in electricity bills.
3. Intelligent Control: The Central Nervous System of Grid Synergy
It integrates advanced functions such as primary frequency regulation and SVG reactive power compensation, keeping voltage fluctuations within ±2% and frequency fluctuations within ±0.1Hz. Its intelligent algorithm can monitor grid parameters in real time, dynamically adjust charging and discharging strategies, and quickly switch to off-grid mode in case of grid failure to ensure continuous power supply to critical loads. A case study in a data center shows that the system's response time is at the millisecond level, effectively suppressing harmonic interference and improving power quality to Class A.
Full-cycle value reconstruction: three-dimensional empowerment for cost reduction, intelligence, and safety
Economic breakthroughs in cost reduction and efficiency enhancement
The modular design reduces installation and operation and maintenance costs by 30%, and the ultra-high electrical insulation performance extends battery life by 20%. Its wide voltage compatibility can accommodate different batches of battery cells, avoiding system degradation caused by cell attenuation and further improving asset utilization.
2. Efficiency Leap in Intelligent Operation and Maintenance
Through multi-protocol interfaces such as RS485/CAN/Ethernet, it seamlessly integrates with EMS/BMS systems to achieve full-process digital management. The built-in AI fault early warning system can identify potential risks in advance, with a positioning accuracy of over 95%.
3. Safety barriers of reliability design
Low-loss IGBT modules and high-stability filter inductors are adopted, with temperature rise controlled below 35K at an ambient temperature of 40℃ and overload capacity reaching 150%/10min. Its three-level fire protection system and five-level fuse mechanism can effectively isolate the risk of thermal runaway, meeting strict safety standards such as GB/T 36547-2018.
Under the dual impetus of global energy transformation and the marketization of electricity prices, Qualtech has always taken technological innovation as its sail and customer value as its anchor, continuously promoting the iterative upgrade of its energy storage converter products. Its QT-PCS series products, equipped with high-efficiency, high-reliability, and high-intelligence technical cores, not only serve as an important tool for industrial and commercial users to achieve "quantifiable" economic benefits but also, with their outstanding grid-level interaction capabilities, strongly promote the construction of a new type of power system.