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200 kW Three-Phase Inverter Reference Design

The 200kW three-phase inverter reference design improves power density and efficiency, using a platform for SiC MOSFETs suitable for multiple applications.

three phase inverter

A 200 kW three-phase inverter is particularly significant in electric vehicles (EVs), underscoring its vital role in contemporary power systems. The inverter’s ability to convert DC to AC is crucial for EV technology, especially for charging stations catering to high-power electric vehicles. In EV charging applications, the 200 kW capacity enables the rapid charging of vehicles, significantly reducing waiting times and enhancing the usability of EVs. Furthermore, in more extensive EV infrastructures, such as bus depots or commercial fleets, the three-phase aspect of the inverter ensures a stable and efficient power supply, aligning perfectly with the high-energy demands of these applications. 

The 200kW three-phase inverter reference design, CRD200DA12E-XM3, from Wolfspeed sets a new standard in system-level power density and efficiency, a feat achieved by integrating Wolfspeed’s innovative XM3 power module platform. This platform is specifically tailored for SiC MOSFETs and boasts a high-density and low-intensity design. This configuration reduces system-level losses and streamlines the overall system design.

Key features of this design include an optimized setup for Wolfspeed’s All-SiC, Low Inductance XM3 Power Modules. The complete stackup encompasses various components: modules, cooling systems, bussing, gate drivers, voltage/current sensors, and a controller. The design supports high-frequency, ultra-fast switching operations, which, combined with ultra-low loss and low parasitic bussing, enable the creation of compact, lightweight systems.

Notably, this inverter achieves twice the power density of traditional silicon-based inverters. This increase in power density is accompanied by high-efficiency operation, which reduces thermal requirements. As a result, the overall system cost is also significantly reduced, making this inverter an exemplary model of advanced power system design.

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The technology finds its applications in a diverse range of fields. It is suitable for vehicle traction inverters, providing the necessary power conversion for electric vehicles. In active front-ends, it ensures efficient energy flow, while in uninterruptible power supplies, it guarantees a steady energy supply. Its utility extends to industrial motor drives, optimizing the performance of various industrial machinery. Technology also significantly influences energy storage systems, contributing to more efficient power management. It’s also a key component in grid-tied renewable energy systems, aiding in integrating renewable sources with the power grid. Lastly, its application in smart grids and flexible AC transmission systems represents a step forward in modernizing and enhancing the efficiency of power distribution networks.

The specifications of this advanced system are detailed and robust. It operates with an 800VDC bus nominal, reaching up to 900V at its maximum. The system can deliver an output of 240 ARMS and supports a maximum switching frequency of 80kHz. It includes a 300uF DC Link Capacitance for efficient energy storage and transfer. The system is equipped with a liquid-cooled cold plate for temperature regulation, ensuring optimal performance under various operational conditions. Additionally, it features a CAN Interface, facilitating communication and control within networked systems.

Wolfspeed has tested this reference design. It comes with a Bill of Material (BOM), schematics, etc. You can find additional data about the reference design on the company’s website. To read more about this reference design, click here.

Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a journalist at EFY. She is an Electronics and Communication Engineer with over five years of academic experience. Her expertise lies in working with development boards and IoT cloud. She enjoys writing as it enables her to share her knowledge and insights related to electronics, with like-minded techies.


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