{"id":7586,"date":"2026-07-30T10:55:43","date_gmt":"2026-07-30T02:55:43","guid":{"rendered":"https:\/\/hobertek.com\/how-to-size-a-solar-pump-inverter-the-engineering-guide-to-ac-pump-solarization-2026\/"},"modified":"2026-07-30T10:55:43","modified_gmt":"2026-07-30T02:55:43","slug":"how-to-size-a-solar-pump-inverter-the-engineering-guide-to-ac-pump-solarization-2026","status":"publish","type":"post","link":"https:\/\/hobertek.com\/zh\/how-to-size-a-solar-pump-inverter-the-engineering-guide-to-ac-pump-solarization-2026\/","title":{"rendered":"\u5982\u4f55\u9009\u62e9\u5408\u9002\u7684\u592a\u9633\u80fd\u6c34\u6cf5\u9006\u53d8\u5668\uff1a\u4ea4\u6d41\u6c34\u6cf5\u592a\u9633\u80fd\u5316\u5de5\u7a0b\u6307\u5357\uff082026\uff09"},"content":{"rendered":"<p><strong>To correctly size a solar pump inverter for an existing AC pump, you must match the inverter\u2019s Rated Output Current to the motor\u2019s Full Load Amps (FLA), typically applying a 1.15x safety margin. Sizing by kW alone is a common field error that leads to premature IGBT failure. Additionally, the PV array configuration must ensure the Vmp stays within the inverter&#8217;s MPPT window while the Voc never exceeds the maximum DC input voltage at the site\u2019s lowest temperature.<\/strong><\/p>\n<h2>Step 1: The &#8220;Current Over Power&#8221; Rule<\/h2>\n<p>\u5728\u73b0\u573a\uff0c\u6211\u4eec\u7ecf\u5e38\u770b\u5230\u5b89\u88c5\u4eba\u5458\u5c06 7.5kW \u7684\u9006\u53d8\u5668\u4e0e 7.5kW \u7684\u6c34\u6cf5\u5339\u914d\uff0c\u7136\u540e\u7591\u60d1\u4e3a\u4ec0\u4e48\u5b83\u4f1a\u56e0\u8fc7\u7535\u6d41\u800c\u8df3\u95f8\u3002.<\/p>\n<p><strong>\u771f\u76f8\uff1a<\/strong> Power ratings are nominal. The real work is done by current. If your pump&#8217;s FLA (Full Load Amps) is 15A, your inverter must be able to deliver that current continuously under solar fluctuations.<\/p>\n<ul>\n<li><strong>\u516c\u5f0f\uff1a<\/strong> \u9006\u53d8\u5668\u8f93\u51fa\u7535\u6d41\uff08A\uff09\u2265 \u7535\u673a\u989d\u5b9a\u7535\u6d41\uff08A\uff09\u00d7 1.15<\/li>\n<li><strong>\u4e3a\u4ec0\u4e48\uff1f<\/strong> Solar inputs are variable. High-inertia starts or slight mechanical wear on the pump can cause current spikes. If your inverter doesn&#8217;t have the &#8220;headroom,&#8221; it will trigger protection or burn out.<\/li>\n<\/ul>\n<h2>\u6b65\u9aa4 2\uff1a\u5149\u4f0f\u9635\u5217\u7535\u538b\u7a97\u53e3\uff08Voc \u4e0e Vmp\uff09<\/h2>\n<p>\u592a\u9633\u80fd\u6c34\u6cf5\u9006\u53d8\u5668\u5e76\u975e\u7535\u6c60\u5145\u7535\u5668\uff0c\u800c\u662f\u4e00\u6b3e\u9ad8\u901fMPPT\u9a71\u52a8\u5668\u3002\u5176\u6548\u7387\u5b8c\u5168\u53d6\u51b3\u4e8e\u7535\u538b\u5339\u914d\u3002.<\/p>\n<ul>\n<li><strong>Vmp\uff08\u6700\u5927\u529f\u7387\u7535\u538b\uff09\uff1a<\/strong> Your string\u2019s combined Vmp must be at the center of the inverter&#8217;s MPPT range (e.g., 530V-580V for a 380V AC system) to ensure 100% pump frequency even during passing clouds.<\/li>\n<li><strong>Voc\uff08\u5f00\u8def\u7535\u538b\uff09\uff1a<\/strong> <strong>\u7edd\u4e0d<\/strong> design your string to hit more than 90% of the inverter&#8217;s max DC input. If the inverter max is 800V, keep your Voc below 720V. Cold mornings in regions like the Middle East or Andes can spike Voc by 10-15%, instantly frying the input capacitors.<\/li>\n<\/ul>\n<h2>Step 3: The Site-Specific &#8220;Correction Factors&#8221;<\/h2>\n<p>Standard data sheets assume 25&deg;C and sea level. Real-world engineering doesn&#8217;t. HOBER inverters are built for extreme environments, but physics still applies.<\/p>\n<ol>\n<li><strong>\u9ad8\u6d77\u62d4\uff08&gt;3000\u7c73\uff09\uff1a<\/strong> \u7a7a\u6c14\u7a00\u8584\u610f\u5473\u7740\u6563\u70ed\u4e0d\u826f\u3002\u5728\u50cf\u62c9\u5df4\u65af\u8fd9\u6837\u7684\u57ce\u5e02\u6216\u79d8\u9c81\u7684\u9ad8\u6d77\u62d4\u5730\u533a\uff0c\u4f60\u5fc5\u987b <strong>\u9006\u53d8\u5668\u7684\u529f\u7387\u7b49\u7ea7\u8981\u6bd4\u989d\u5b9a\u529f\u7387\u9ad8\u4e00\u4e2a\u7b49\u7ea7\u3002<\/strong> \uff08\u4f8b\u5982\uff0c\u4f7f\u7528 11kW \u9006\u53d8\u5668\u6765\u9a71\u52a8 7.5kW \u7684\u6c34\u6cf5\uff09\u4ee5\u8865\u507f\u964d\u989d\u3002.<\/li>\n<li><strong>\u6781\u7aef\u9ad8\u6e29\uff0850\u00b0C\u4ee5\u4e0a\uff09\uff1a<\/strong> \u5982\u679c\u60a8\u7684\u73b0\u573a\u6e29\u5ea6\u8fbe\u5230 50\u00b0C\uff08\u4f8b\u5982\u5df4\u57fa\u65af\u5766\u3001\u82cf\u4e39\uff09\uff0c\u98ce\u51b7\u5f0f\u8bbe\u5907\u5c06\u4f1a\u5931\u6548\u3002\u60a8\u9700\u8981\u4e00\u53f0\u2026\u2026 <strong>\u4e09\u91cd\u51b7\u5374\u67b6\u6784<\/strong> \uff08IP65\u5bc6\u5c01+\u5916\u90e8\u6563\u70ed\u7247+\u5f3a\u5236\u98ce\u51b7\uff09\u4ee5\u4fdd\u630150Hz\u8f93\u51fa\u3002.<\/li>\n<\/ol>\n<h3>\u5feb\u901f\u5c3a\u5bf8\u53c2\u8003\u8868\uff08B2B \u6807\u51c6\uff09<\/h3>\n<table style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 12px; border: 1px solid #ddd;\">\u6cf5\u529f\u7387<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd;\">\u7535\u673a\u76f8<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd;\">\u63a8\u8350\u9006\u53d8\u5668<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd;\">\u6700\u5c0f\u5149\u4f0f\u529f\u7387<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>2.2\u5343\u74e6\/3\u9a6c\u529b<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u4e09\u76f8 220V<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">2.2kW &#8211; 3.7kW<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">3.3\u5343\u74e6\u5cf0\u503c\u529f\u7387<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>7.5\u5343\u74e6\/10\u9a6c\u529b<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u4e09\u76f8 380V<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">7.5kW &#8211; 11kW<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">11.2\u5343\u74e6\u5cf0\u503c\u529f\u7387<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>15\u5343\u74e6\/20\u9a6c\u529b<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u4e09\u76f8 380V<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">15kW &#8211; 18.5kW<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">22.5\u5343\u74e6\u5cf0\u503c\u529f\u7387<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u7b2c\u56db\u6b65\uff1a\u957f\u7535\u7f06\u7684\u5371\u9669<\/h2>\n<p>If your borehole is deeper than 100m, the voltage drop and reflected wave phenomenon will destroy your motor&#8217;s insulation.<\/p>\n<ul>\n<li><strong>\u5de5\u7a0b\u89c4\u5219\uff1a<\/strong>\n<ul>\n<li><strong>100m &#8211; 200m:<\/strong> \u5b89\u88c5\u4e00\u4e2a\u8f93\u51fa\u53cd\u5e94\u5668\u3002.<\/li>\n<li><strong>&gt;200\u7c73\uff1a<\/strong> \u5b89\u88c5\u6b63\u5f26\u6ce2\u6ee4\u6ce2\u5668\u3002.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>HOBER IP65 \u9006\u53d8\u5668\u8bbe\u8ba1\u7528\u4e8e\u5904\u7406\u8fd9\u4e9b\u611f\u6027\u8d1f\u8f7d\uff0c\u4f46\u5bf9\u4e8e\u7cfb\u7edf\u5bff\u547d\u800c\u8a00\uff0c\u4fdd\u62a4\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u3002.<\/p>\n<hr \/>\n<h2>\u6b63\u5728\u5bfb\u627e\u4e13\u4e1a\u7684\u7cfb\u7edf\u9009\u578b\u670d\u52a1\uff1f<\/h2>\n<p>\u4ee5\u4e0a\u903b\u8f91\u9002\u7528\u4e8e\u521d\u6b65\u5c3a\u5bf8\u4f30\u7b97\u3002\u5982\u9700\u5b8c\u6574\u7684\u7269\u6599\u6e05\u5355 (BOM)\u3001\u5f26\u7ebf\u914d\u7f6e\u4ee5\u53ca\u9488\u5bf9\u60a8\u7279\u5b9a\u9879\u76ee\u7684\u7ecf\u9500\u5546\u4e13\u5c5e\u4ef7\u683c\uff0c\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b66\u9662\u3002.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/hobertek.com\/zh\/ac-pump-solarization-academy\/\" class=\"button\">\u8bbf\u95ee\u4ea4\u6d41\u6cf5\u592a\u9633\u80fd\u5316\u5b66\u9662<\/a><\/p>\n<hr \/>\n<h3>\u592a\u9633\u80fd\u6c34\u6cf5\u9006\u53d8\u5668\u9009\u578b\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/h3>\n<div class=\"faq-section\">\n<p><strong>\u95ee\uff1a\u6211\u53ef\u4ee5\u4f7f\u7528\u5355\u76f8\u53d8\u9891\u5668\u6765\u9a71\u52a8\u4e09\u76f8\u6c34\u6cf5\u5417\uff1f<\/strong><br \/>\u7b54\uff1a\u4e0d\u3002\u9006\u53d8\u5668\u7684\u8f93\u51fa\u76f8\u6570\u548c\u7535\u538b\u5fc5\u987b\u4e0e\u7535\u673a\u94ed\u724c\u4e0a\u7684\u76f8\u6570\u548c\u7535\u538b\u76f8\u5339\u914d\u3002\u4f7f\u7528HOBER\u6df7\u5408\u9006\u53d8\u5668\u53ef\u4ee5\u5c06\u5355\u76f8\u5149\u4f0f\u8f93\u5165\u8f6c\u6362\u4e3a\u4e09\u76f8\u8f93\u51fa\uff0c\u7528\u4e8e\u6807\u51c6\u6c34\u6cf5\u3002.<\/p>\n<p><strong>\u95ee\uff1a\u5982\u4f55\u5904\u7406 500 \u9a6c\u529b\u4ee5\u4e0a\u7684\u8d1f\u8f7d\uff1f<\/strong><br \/>\u7b54\uff1a\u5bf9\u4e8e\u5927\u578b\u704c\u6e89\u7cfb\u7edf\uff08\u4f8b\u5982\u67d1\u6a58\u56ed\uff09\uff0c\u6211\u4eec\u91c7\u7528\u8f93\u5165\u5bb9\u91cf1130A\u4ee5\u4e0a\u3001\u652f\u6301\u591a\u9a71\u52a8\u540c\u6b65\u7684\u5de5\u4e1a\u63a7\u5236\u67dc\u3002\u8bf7\u8054\u7cfb\u6211\u4eec\u7684\u5de5\u7a0b\u56e2\u961f\u83b7\u53d6\u5927\u529f\u7387\u6280\u672f\u65b9\u6848\u3002.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u8981\u4e3a\u73b0\u6709\u7684\u4ea4\u6d41\u6c34\u6cf5\u6b63\u786e\u9009\u62e9\u592a\u9633\u80fd\u6c34\u6cf5\u9006\u53d8\u5668\uff0c\u5fc5\u987b\u4f7f\u9006\u53d8\u5668\u7684\u989d\u5b9a\u8f93\u51fa\u7535\u6d41\u4e0e\u7535\u673a\u7684\u6ee1\u8f7d\u7535\u6d41\u76f8\u5339\u914d\u3002<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>","protected":false},"author":4,"featured_media":7513,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","om_disable_all_campaigns":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"_joinchat":[],"footnotes":"","jetpack_post_was_ever_published":false},"categories":[76,212],"tags":[266,281,168],"class_list":["post-7586","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-pump-inverter","category-solutions","tag-ac-pump-solarization","tag-hybrid-pumping","tag-sizing"],"jetpack_featured_media_url":"https:\/\/hobertek.com\/wp-content\/uploads\/2026\/07\/Hober-Solar-Pump-Inverter-IP65-Cooling-Test-in-Saudi-Arabia.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/posts\/7586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/comments?post=7586"}],"version-history":[{"count":0,"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/posts\/7586\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/media\/7513"}],"wp:attachment":[{"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/media?parent=7586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/categories?post=7586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobertek.com\/zh\/wp-json\/wp\/v2\/tags?post=7586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}