ユーザー事例

Vonsch加快了用于太阳能逆变器和电池充电器的控制系统的开发

Challenge

在经常转移市场要求的情况下,开发太阳逆变器和电池充电器控制系统

Solution

将基于模型的设计与MATLAB和SIMULINK一起建模电源电子和控制系统,运万博1manbetx行模拟,并为Ti微控制器生成嵌入式代码

Results

  • Product development time reduced by one year
  • 通过模型再利用加速新产品研发
  • 硬件原型的数量减少了

“基于模型的设计使我们能够快速适应不断变化的立法和要求。在可用原型硬件之前,我们在Simulink中设计并模拟了整个系统,并为控制器生成了嵌入式代码,该控制器在可用的硬件后一两天内在原型上工作。”万博1manbetx

Dr. Jakub Vonkomer, VONSCH
Development and testing of FOTO CONTROL 1f and FOTO CHARGER products.

Government incentives for renewable energy and increased consumer awareness of the advantages of solar power are sparking demand for efficient solar battery chargers and solar inverters. VONSCH has developed two product lines to meet this demand: FOTO CHARGER DC 48 and FOTO CONTROL 1f. The FOTO CHARGER product uses direct current (DC) output of solar panels to charge batteries, and FOTO CONTROL 1f products convert the DC output of a solar panel or battery into alternating current (AC) that can be directed to the grid or used locally.

VONSCH used Model-Based Design to accelerate the development of control software for its solar inverter and battery charger products.

“Model-Based Design significantly shortened our development time, enabling us to meet the target launch date despite changing requirements caused by new legislation,” says Dr. Jakub Vonkomer, research and development software engineer at VONSCH. “We used our Simulink models for both simulation and code generation, which let us focus on our core design challenges, not C-language implementation specifics.”

Challenge

In the past, VONSCH engineers wrote control software for three-phase inverters by hand in C, which meant they had to wait until hardware was available before software development could start. This approach was feasible when VONSCH had only a few product types sold in larger numbers. As VONSCH began specializing in custom power electronics solutions, the team needed a more efficient process to design a wider variety of products to be sold in smaller numbers.

为了利用计划的政府补贴太阳能,范施希望在补贴生效之前完成产品开发。但是,许多立法变更导致了一个迅速转移的市场,太阳能电池板提供商淹没了万施,其基于最新立法的其他要求。

To speed development while accommodating changing requirements and to manage the added complexity introduced by the single-phase inverters in their newer products, VONSCH needed a way to simulate their control algorithms early in the development process—before hardware was available—and to generate code once the hardware was ready.

Solution

VONSCH engineers used Model-Based Design to model, simulate, and generate code for the FOTO CONTROL and FOTO CHARGER control systems.

Working in Simulink®and Simscape Electrical™, a team of three software engineers created models of electrical systems including transistors, diodes, and batteries. They simulated this model to identify switching transients, optimize values for passive elements, and validate filter behavior with various switching frequencies.

The group modeled multiple controllers in Simulink, including algorithms for DC voltage regulation, power limiting, and maximum power point tracking (MPPT).

在硬件可用之前,团队跑关闭-loop simulations with the plant models to verify the initial controller designs.

Once the prototype hardware was ready, the team refined their plant models based on initial hardware tests and used Embedded Coder®从其为Texas Instruments™Piccolo™微万博1manbetx控制器的Simulink模型中生成C代码。

Following hardware tests in the lab, they used MATLAB®绘制从微控制器导出的数据,并使用信号处理工具箱进行了光谱分析。

通过几次迭代,团队根据测试结果分析,对目标微控制器的再生代码进行了改进并优化了他们的控制器设计,并在原型硬件上进行了重新测试。万博1manbetx

即使在开发过程中的需求变化引起的延迟,该团队也达到了计划的时间表,以开发FOTO充电器产品,并同时开发了375伏和48伏版本的FOTO控制版本,所有这些版本现在都在生产中。

Results

  • Product development time reduced by one year. “Using Model-Based Design, our small engineering team completed development in just 6 months instead of the 18 months we had initially estimated,” says Vonkomer. “We were faster because we had the ability to rapidly debug our algorithms, verify components through simulation, and focus on the core design rather than on processor peripherals and low-level implementation details.”

  • 通过模型再利用加速新产品研发. “For the FOTO CHARGER product, we reused our MPPT algorithms and numerous Simulink models from FOTO CONTROL,” Vonkomer says. “MATLAB and Simulink helped us accelerate research and development by a factor of three while giving us the freedom to switch to another hardware platform if we ever want to.”

  • 硬件原型的数量减少了. “Running simulations of the plant models we built with Simulink and Simscape Electrical enabled us to improve and optimize our hardware design before it was finalized,” says Vonkomer. “The simulations eliminated several iterations of preprototype hardware.”

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