# A Digital Hysteresis Current Control for Half-Bridge Inverters with Constrained Switching Frequency

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## Abstract

**:**

## 1. Introduction

## 2. Classical Fixed Band Hysteresis Current Control

## 3. Conventional Adaptive Hysteresis Current Control

#### 3.1. Algorithm of the Convention Adaptive Hysteresis Current Control

#### 3.2. Disadvantages of Conventional Adaptive Hysteresis Current Control

**Problem**

**1.**

**Problem**

**2.**

## 4. Proposed Robustly Adaptive Hysteresis Current Control

**Remark**

**1.**

## 5. Simulation Results

## 6. Conclusions

## Author Contributions

## Conflicts of Interest

## References

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**Figure 5.**Conventional adaptive hysteresis current control does not guarantee that the operating switching frequency will be lower than the desired constant frequency.

**Figure 6.**Conventional adaptive hysteresis current control does not guarantee the stability of the response current.

**Figure 9.**Current and switching period of the proposed method and conventional method for the desired switching frequency at 40 kHz.

**Figure 10.**Current and switching period of the proposed method and conventional method for the desired switching frequency at 20 kHz.

**Figure 11.**Current and switching period of the proposed method and conventional method for the desired switching frequency at 10 kHz.

Half Period | S_{1} | S_{2} | Input Voltage v_{dc} | Output Current i_{L} |
---|---|---|---|---|

Positive | On | Off | ${V}_{dc}$ | Increase |

Negative | Off | On | $-{V}_{dc}$ | Decrease |

Switching frequency | ${f}_{sw}=10$ kHz | ${f}_{sw}=20$ kHz | ${f}_{sw}=40$ kHz |

Proposed method | 97.1 | 98.4 | 99.3 |

Conventional method | 95.2 | 97.2 | 98.5 |

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**MDPI and ACS Style**

Nguyen-Van, T.; Abe, R.; Tanaka, K.
A Digital Hysteresis Current Control for Half-Bridge Inverters with Constrained Switching Frequency. *Energies* **2017**, *10*, 1610.
https://doi.org/10.3390/en10101610

**AMA Style**

Nguyen-Van T, Abe R, Tanaka K.
A Digital Hysteresis Current Control for Half-Bridge Inverters with Constrained Switching Frequency. *Energies*. 2017; 10(10):1610.
https://doi.org/10.3390/en10101610

**Chicago/Turabian Style**

Nguyen-Van, Triet, Rikiya Abe, and Kenji Tanaka.
2017. "A Digital Hysteresis Current Control for Half-Bridge Inverters with Constrained Switching Frequency" *Energies* 10, no. 10: 1610.
https://doi.org/10.3390/en10101610