Purpose

The main purpose of this paper is to evaluate the two energy saving position control strategies for AC drives valid for a wide range of boundary conditions including an analysis of their energy expenses.

Design/methodology/approach

For energy demands analysis, the optimal energy control based on mechanical and electrical losses minimization is compared with the near-optimal one based on symmetrical trapezoidal speed profile. Both control strategies respect prescribed maneuver time and define acceleration profile for preplanned rest-to-rest maneuver.

Findings

Presented simulations confirm lower total energy expenditures of energy optimal control if compared with near-optimal one, but the differences are only small due to the fact that two energy saving strategies are compared.

Research limitations/implications

Developed overall control system consisting of energy saving profile generator, pre-compensator and position control system respecting principles of field-oriented control is capable to track precomputed state variables precisely.

Practical implications

Energy demands of both control strategies are verified and compared to simulations and preliminary experiments. The possibilities of energy savings were confirmed for both control strategies.

Originality/value

Experimental verification of designed control structure is sufficiently promising and confirmed assumed energy savings.

中文翻译：

---

交流变频器位置控制的能耗优化

目的

本文的主要目的是评估适用于各种边界条件的交流变频器的两种节能位置控制策略，包括对其能耗的分析。

设计/方法/方法

为了进行能量需求分析，将基于机械和电气损耗最小化的最佳能量控制与基于对称梯形速度曲线的近似最佳控制进行了比较。两种控制策略均遵守规定的操纵时间，并为预先计划的休息到休息操纵定义了加速度曲线。

发现

提出的仿真与近乎最优的相比，证实了能源最优控制的总能源消耗较低，但是由于比较了两种节能策略，因此差异仅很小。

研究局限/意义

研发的整体控制系统由节能曲线发生器，预补偿器和位置控制系统组成，并遵循磁场定向控制的原理，能够精确跟踪预先计算的状态变量。

实际影响

验证了两种控制策略的能量需求，并将其与仿真和初步实验进行比较。两种控制策略均确认了节能的可能性。

创意/价值

设计控制结构的实验验证是很有前途的，并确认了假定的节能效果。