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Power conversion systems

Power conversion systems (PCS) are intermediary devices between the storage element, such as large banks of (DC) batteries, and the (AC) power grid

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Overview

With the enormous amount of energy being consumed and government policies to minimize carbon emissions, the shift to renewable energy makes reliably delivering energy where and when it is needed more challenging than ever. A critical component of any successful energy storage system is the power conversion system (PCS), which is the intermediary device between the storage element, typically large banks of DC batteries, and the AC power grid.

Benefits

  • Losses cut by 50% for extra energy
  • 2% more energy w/ same battery size
  • Up to 200+ kW power level
  • High reliability
  • Low stray inductance
  • Wild range of operating temps
  • Integrated NTC with high isolation
  • Current measurement up to 120 A

Block diagram

About

About power conversion systems

Power conversion systems (PCS) are essential in energy storage systems, being the ambassador between the batteries and the grid. In particular, AC-DC and DC-AC conversion takes place in the power conversion system (PCS), and the converted energy flows into the batteries to charge them or is converted to AC from the battery storage and fed into the grid.?

Infineon's solutions for PCS enable high-efficiency, power-dense, and reliable power conversion systems in your ESS design. Check out the block diagram and the content on this page for more details.

Infineon solutions for different PCS power ranges

In PCS, solutions below 30 kW are typically best served with discrete solutions such as OptiMOS?, CoolMOS?, and CoolSiC? MOSFETs, as well as CoolGaN? HEMTs for more advanced, fast-switching designs. Additionally, while above 100 kW, the modular approach of CoolSiC? and TRENCHSTOP? 5 IGBT modules and highly integrated 3-level EasyPIM?, EasyPACK?, and EasyDUAL? IGBT power modules make the most economic sense.

The range in between is best examined on a case-by-case basis to determine the use of discrete or module solutions. Since every switch needs a driver, and every driver needs to be controlled, we offer the appropriate EiceDRIVER? gate driver ICs as well as XMC? microcontrollers and current sensor solutions. And our OPTIGA? security products round out the range and ensure data protection and security.

Power conversion system topologies and product recommendations

Infineon's product offerings for power conversion systems in ESS are broken down into three categories:?

  • PCS topologies <10 kW: Infineon enables full residential system solutions with the highest efficiency and power density by applying market-leading silicon carbide (SiC) and silicon (Si) MOSFETs, as well as IGBT technologies paired with best-fit gate drivers.
  • PCS topologies 10 kW to 125 kW: If the system is AC-coupled and has a battery voltage < 1000 V: CoolSiC? module 1200 V half-bridge (2-level), Easy CoolSiC? 3-level (3-level NPC2). Or, for a system with a battery voltage of 1200 V or 1300 V, we recommend a 1700 V half-bridge module or 3-level ANPC module. On the other hand, if the system is DC-coupled, with a battery voltage < 1000 V, we recommend a 1200 V CoolSiC? module.
  • PCS topologies 125 kW to 2 MW: In this mostly industrial category, Infineon's recommended products are divided into further three sub-categories. Battery voltage 1000 V and 3-level NPC1: 62 mm, EconoDUAL? 3. For a battery voltage of 1500 V and 3-level ANPC, we use Easy 3B, 62 mm, EconoDUAL? 3, PrimePACK? 3, PrimePACK? 3+, and lastly, for a battery voltage of 1500 V and 3-level NPC2, we use PrimePACK? 3+.

About power conversion systems

Power conversion systems (PCS) are essential in energy storage systems, being the ambassador between the batteries and the grid. In particular, AC-DC and DC-AC conversion takes place in the power conversion system (PCS), and the converted energy flows into the batteries to charge them or is converted to AC from the battery storage and fed into the grid.?

Infineon's solutions for PCS enable high-efficiency, power-dense, and reliable power conversion systems in your ESS design. Check out the block diagram and the content on this page for more details.

Infineon solutions for different PCS power ranges

In PCS, solutions below 30 kW are typically best served with discrete solutions such as OptiMOS?, CoolMOS?, and CoolSiC? MOSFETs, as well as CoolGaN? HEMTs for more advanced, fast-switching designs. Additionally, while above 100 kW, the modular approach of CoolSiC? and TRENCHSTOP? 5 IGBT modules and highly integrated 3-level EasyPIM?, EasyPACK?, and EasyDUAL? IGBT power modules make the most economic sense.

The range in between is best examined on a case-by-case basis to determine the use of discrete or module solutions. Since every switch needs a driver, and every driver needs to be controlled, we offer the appropriate EiceDRIVER? gate driver ICs as well as XMC? microcontrollers and current sensor solutions. And our OPTIGA? security products round out the range and ensure data protection and security.

Power conversion system topologies and product recommendations

Infineon's product offerings for power conversion systems in ESS are broken down into three categories:?

  • PCS topologies <10 kW: Infineon enables full residential system solutions with the highest efficiency and power density by applying market-leading silicon carbide (SiC) and silicon (Si) MOSFETs, as well as IGBT technologies paired with best-fit gate drivers.
  • PCS topologies 10 kW to 125 kW: If the system is AC-coupled and has a battery voltage < 1000 V: CoolSiC? module 1200 V half-bridge (2-level), Easy CoolSiC? 3-level (3-level NPC2). Or, for a system with a battery voltage of 1200 V or 1300 V, we recommend a 1700 V half-bridge module or 3-level ANPC module. On the other hand, if the system is DC-coupled, with a battery voltage < 1000 V, we recommend a 1200 V CoolSiC? module.
  • PCS topologies 125 kW to 2 MW: In this mostly industrial category, Infineon's recommended products are divided into further three sub-categories. Battery voltage 1000 V and 3-level NPC1: 62 mm, EconoDUAL? 3. For a battery voltage of 1500 V and 3-level ANPC, we use Easy 3B, 62 mm, EconoDUAL? 3, PrimePACK? 3, PrimePACK? 3+, and lastly, for a battery voltage of 1500 V and 3-level NPC2, we use PrimePACK? 3+.

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