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Digital Control

Validate a control algorithm for digital implementation.

PSIM’s Digital Control module is a flexible, time-saving solution to analyze systems in z-domain and convert from analog to digital control.

Achieve more analysis with less cost

With higher performance and lower cost, microcontrollers/DSPs have been increasingly used in converter control in power supply and motor drive applications, requiring control algorithms to be implemented in the discrete-time z-domain.

Unlike analog control, there are unique issues in digital control loop design, such as:

Sampling
Quantization and resolution
Delay resulting from processor computation

As a result, a controller that works in the analog s-domain may not work in the digital z-domain.

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Simulation and Power Conversion

Test in Simulation – Not production

PSIM’s Digital Control Module lets you implement the digital control algorithm with z-domain simulation blocks making it easy to check the performance and stability of a digital control loop. You can easily test the effects of quantization and observe the effects of digital delay on a control algorithm, allowing users to debug and troubleshoot in a simulation environment.

Digital Control of Power Correction Circuit

Smooth conversion from analog to digital control

To facilitate digital controller design, a utility tool is provided to convert an analog controller to a digital controller. After the controller is designed in analog s-domain taking into account the digital delay, the controller can be converted to a digital controller in z-domain and implemented directly in PSIM.

MODULE FEATURES & BENEFITS