## 6 Experiment  
Figure 23 is a photograph of the experimental prototype. A 1500 W experimental platform was built for verifying the simulation results. The BOM (bill of materials) used in the experiment is shown in Table 4  
The input source selected in Table 4 is Chroma's 61815-TC. This power supply can provide integer multiple harmonics, interharmonics, supraharmonics, and voltage disturbances, which is very useful for verifying the correctness and effectiveness of HSCM. The experimental results when injecting integer multiple harmonics are shown in Figure 24, where Figure 24a is before the action of HSCM, and Figure 24b is after the action of HSCM. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Parameter** & **Type** & **Number** & **Nrand** \\ \hline \(L_{\text{a}}\),\(L_{\text{b}}\),\(L_{\text{c}}\) & LGNE1 mH-30–100K-3P & 1 & LGNE \\ S\({}_{1}\)\(\sim\)S\({}_{6}\) & IKW30N60T & 6 & Infineon \\ C\({}_{i}\) & C3D1U206F0 BC00/20 uF & 3 & Faratronic \\ S\({}_{7}\)\(\sim\)S\({}_{10}\) & IKW30N60T & 4 & Infineon \\ C\({}_{r}\) & C3D1U505 KB00C00/5 uF & 2 & Faratronic \\ \(T\) & GTF-60V 50A-100K & 1 & Wengudq \\ D\({}_{1}\)\(\sim\)D\({}_{4}\) & VS-E5 PH6006L-N3 & 4 & VISHAY \\ L\({}_{\text{o}}\) & LGNE2 uH-50–100K-CF3 & 1 & LGNE \\ C\({}_{\text{o}}\) & 450 MXG470 MEFCN35X & 2 & Rubycon \\ \(u_{\text{s}}\) & 61815-TC & 1 & Chroma \\ \(R_{\text{o}}\) & ZX-5-2.4 & 1 & Tianjin \\  & & Langwo \\ \hline \hline \end{tabular}
\end{table} 
Table 4: The BOM of the HPR. Figure 23: The experimental prototype. In Figure 24a, THD(\(u_{\text{s}}\)) = 3.67%, THD(\(u_{\text{s}}\)) = 34.23% and PF = 0.963, and the distortion of \(i_{\text{s}}\) is quite severe. THD(\(u_{\text{s}}\)) = 3.67%, THD(\(u_{\text{s}}\)) = 1.83% and PF = 0.997 in Figure 24b, and \(i_{\text{s}}\) is a sine wave. The experimental results when injecting interharmonics are shown in Figure 25, where Figure 25a is before the HSCM takes effect and Figure 25b is after the HSCM takes effect. From Figure 25a, THD(\(u_{\text{s}}\)) = 3.53%, THD(\(i_{\text{s}}\)) = 36.13% and PF = 0.941, and \(i_{\text{s}}\) is not a sine wave. Under the influence of an interharmonic wave, the period of it is doubled. As shown in Figure 25b, THD(\(u_{\text{s}}\)) = 3.53%, THD(\(i_{\text{s}}\)) = 1.82% and PF = 0.997. The harmonics of \(i_{\text{s}}\) are eliminated. Under the influence of ultraharmonics, the experimental waveform of \(u_{\text{s}}\) is shown in Figure 26.  
As shown in Figure 26, the ultraharmonics have a relatively small impact on \(i_{\text{s}}\). However, THD improved under the influence of HSCM, changing from 1.62% to 0.86%. Figure 26 displays the experimental waveform with voltage disturbances applied to \(u_{\text{s}}\). Disturbance \(u_{\text{s}1}\) was introduced at time \(t_{1}\), and disturbance \(u_{\text{s}2}\) was introduced at time \(t_{2}\). Figure 24: The experimental results of injecting integer multiple harmonics. Figure 25: The experimental results of injecting interharmonics. When \(u_{\rm s1}\) is applied, the amplitude of \(u_{\rm s}\) increases. When HSCM is not in effect, \(i_{\rm s}\) drops and distortion occurs, after \(t=t_{\rm 1}\) in Figure 27a. THD(\(i_{\rm s}\)) = 5.13% and PF = 0.963. From Figure 27b, it can be seen that HSCM can cause \(u_{\rm s}\) to change slowly under the influence of \(u_{\rm s1}\), without distortion. THD(\(i_{\rm s}\)) = 1.24% and PF = 0.996. When \(u_{\rm s2}\) is applied, the amplitude of \(u_{\rm s}\) decreases, \(i_{\rm s}\) exhibits overshoot, and distortion occurs, as shown in Figure 27c. THD(\(i_{\rm s}\)) = 4.43% and PF = 0.973. From Figure 27d, it is observed that the amplitude of \(u_{\rm s}\) gradually increases under the influence of \(u_{\rm s2}\), without overshoot or distortion. THD(\(i_{\rm s}\)) = 1.34% and PF = 0.997. Therefore, HSCM is also capable of mitigating the effects brought about by \(u_{\rm s2}\). When HSCM is in effect, the change in \(i_{\rm s}\) is more gradual, after \(t=t_{\rm 1}\) in Figure 27b. \(u_{\rm s2}\) caused a reduction in the amplitude of \(u_{\rm s}\).